[Android] Add SCRFD android app example (#682)

* [Android] Add CxxBuffer to native PaddleSegModel

* [Android] Add PaddleSeg android app example

* [Android] Add SCRFD android app example

* [Doc] fix typos

* [Android] revert camera setting changes

examples/vision/detection/paddledetection/android/README.md

@@ -23,9 +23,10 @@
 4. 点击 Run 按钮，自动编译 APP 并安装到手机。(该过程会自动下载预编译的 FastDeploy Android 库 以及 模型文件，需要联网)
 成功后效果如下，图一：APP 安装到手机；图二： APP 打开后的效果，会自动识别图片中的物体并标记；图三：APP设置选项，点击右上角的设置图片，可以设置不同选项进行体验。
 
- | APP 图标 | APP 效果 | APP设置项
+| APP 图标 | APP 效果 | APP设置项
   | ---     | --- | --- |
-  | ![app_pic](https://user-images.githubusercontent.com/31974251/203268599-c94018d8-3683-490a-a5c7-a8136a4fa284.jpg)   | ![app_res](https://user-images.githubusercontent.com/31974251/197169609-bb214af3-d6e7-4433-bb96-1225cddd441c.jpg) |  ![app_setup](https://user-images.githubusercontent.com/31974251/197332983-afbfa6d5-4a3b-4c54-a528-4a3e58441be1.jpg) |  
+  | <img width="300" height="500" alt="image" src="https://user-images.githubusercontent.com/31974251/203268599-c94018d8-3683-490a-a5c7-a8136a4fa284.jpg">  | <img width="300" height="500" alt="image" src="https://user-images.githubusercontent.com/31974251/203261763-a7513df7-e0ab-42e5-ad50-79ed7e8c8cd2.gif"> | <img width="300" height="500" alt="image" src="https://user-images.githubusercontent.com/31974251/197332983-afbfa6d5-4a3b-4c54-a528-4a3e58441be1.jpg"> |  
+
 
 ### PicoDet Java API 说明  
 - 模型初始化 API: 模型初始化API包含两种方式，方式一是通过构造函数直接初始化；方式二是，通过调用init函数，在合适的程序节点进行初始化。PicoDet初始化参数说明如下：  

examples/vision/detection/paddledetection/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/ui/view/CameraSurfaceView.java

@@ -287,27 +287,20 @@ public class CameraSurfaceView extends GLSurfaceView implements Renderer,
     public void openCamera() {
         if (disableCamera) return;
         camera = Camera.open(selectedCameraId);
-        Camera.Parameters parameters = camera.getParameters();
-        int degree = Utils.getCameraDisplayOrientation(context, selectedCameraId);
-        camera.setDisplayOrientation(degree);
-        boolean rotate = degree == 90 || degree == 270;
-        int adjusted_width = rotate ? EXPECTED_PREVIEW_HEIGHT : EXPECTED_PREVIEW_WIDTH;
-        int adjusted_height = rotate ? EXPECTED_PREVIEW_WIDTH : EXPECTED_PREVIEW_HEIGHT;
-
         List<Size> supportedPreviewSizes = camera.getParameters().getSupportedPreviewSizes();
-
+        Size previewSize = Utils.getOptimalPreviewSize(supportedPreviewSizes, EXPECTED_PREVIEW_WIDTH,
-        Size previewSize = Utils.getOptimalPreviewSize(
+                EXPECTED_PREVIEW_HEIGHT);
-                supportedPreviewSizes, adjusted_width, adjusted_height);
+        Camera.Parameters parameters = camera.getParameters();
-
-        textureWidth = previewSize.width;
-        textureHeight = previewSize.height;
-
         parameters.setPreviewSize(previewSize.width, previewSize.height);
-        camera.setParameters(parameters);
-
         if (parameters.getSupportedFocusModes().contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
             parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
         }
+        camera.setParameters(parameters);
+        int degree = Utils.getCameraDisplayOrientation(context, selectedCameraId);
+        camera.setDisplayOrientation(degree);
+        boolean rotate = degree == 90 || degree == 270;
+        textureWidth = rotate ? previewSize.height : previewSize.width;
+        textureHeight = rotate ? previewSize.width : previewSize.height;
 
         // Destroy FBO and draw textures
         GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);

examples/vision/facedet/scrfd/android/.gitignore

@@ -0,0 +1,20 @@
+.DS_Store
+.idea
+.gradle
+.cxx
+cache
+build
+app/cache
+app/libs/fastdeploy*
+app/.cxx
+app/build
+app/src/main/assets/models/*
+app/.gradle
+app/.idea
+fastdeploy/cache
+fastdeploy/libs/fastdeploy*
+fastdeploy/.cxx
+fastdeploy/build
+fastdeploy/src/main/assets/models/*
+fastdeploy/.gradle
+fastdeploy/.idea

examples/vision/facedet/scrfd/android/README.md

@@ -0,0 +1,148 @@
+# 目标检测 SCRFD Android Demo 使用文档  
+
+在 Android 上实现实时的人脸检测功能，此 Demo 有很好的的易用性和开放性，如在 Demo 中跑自己训练好的模型等。
+
+## 环境准备
+
+1. 在本地环境安装好 Android Studio 工具，详细安装方法请见[Android Stuido 官网](https://developer.android.com/studio)。
+2. 准备一部 Android 手机，并开启 USB 调试模式。开启方法: `手机设置 -> 查找开发者选项 -> 打开开发者选项和 USB 调试模式`
+
+## 部署步骤
+
+1. 目标检测 SCRFD Demo 位于 `fastdeploy/examples/vision/facedet/scrfd/android` 目录
+2. 用 Android Studio 打开 scrfd/android 工程
+3. 手机连接电脑，打开 USB 调试和文件传输模式，并在 Android Studio 上连接自己的手机设备（手机需要开启允许从 USB 安装软件权限）
+
+<p align="center">
+<img width="1440" alt="image" src="https://user-images.githubusercontent.com/31974251/203257262-71b908ab-bb2b-47d3-9efb-67631687b774.png">
+</p>
+
+> **注意：**
+>> 如果您在导入项目、编译或者运行过程中遇到 NDK 配置错误的提示，请打开 ` File > Project Structure > SDK Location`，修改 `Andriod SDK location` 为您本机配置的 SDK 所在路径。
+
+4. 点击 Run 按钮，自动编译 APP 并安装到手机。(该过程会自动下载预编译的 FastDeploy Android 库 以及 模型文件，需要联网)
+成功后效果如下，图一：APP 安装到手机；图二： APP 打开后的效果，会自动识别图片中的人脸并绘制框；图三：APP设置选项，点击右上角的设置图片，可以设置不同选项进行体验。
+
+ | APP 图标 | APP 效果 | APP设置项
+  | ---     | --- | --- |
+  | <img width="300" height="500" alt="image" src="https://user-images.githubusercontent.com/31974251/203268599-c94018d8-3683-490a-a5c7-a8136a4fa284.jpg">  | <img width="300" height="500" alt="image" src="https://user-images.githubusercontent.com/31974251/203261714-c74631dd-ec5b-4738-81a3-8dfc496f7547.gif"> | <img width="300" height="500" alt="image" src="https://user-images.githubusercontent.com/31974251/197332983-afbfa6d5-4a3b-4c54-a528-4a3e58441be1.jpg"> |  
+
+## SCRFD Java API 说明  
+- 模型初始化 API: 模型初始化API包含两种方式，方式一是通过构造函数直接初始化；方式二是，通过调用init函数，在合适的程序节点进行初始化。PaddleSegModel初始化参数说明如下：  
+  - modelFile: String, paddle格式的模型文件路径，如 model.pdmodel
+  - paramFile: String, paddle格式的参数文件路径，如 model.pdiparams  
+  - option: RuntimeOption，可选参数，模型初始化option。如果不传入该参数则会使用默认的运行时选项。  
+
+```java
+// 构造函数: constructor w/o label file
+public SCRFD(); // 空构造函数，之后可以调用init初始化
+public SCRFD(String modelFile, String paramsFile);
+public SCRFD(String modelFile, String paramsFile, RuntimeOption option);
+// 手动调用init初始化: call init manually w/o label file
+public boolean init(String modelFile, String paramsFile, RuntimeOption option);
+```  
+- 模型预测 API：模型预测API包含直接预测的API以及带可视化功能的API。直接预测是指，不保存图片以及不渲染结果到Bitmap上，仅预测推理结果。预测并且可视化是指，预测结果以及可视化，并将可视化后的图片保存到指定的途径，以及将可视化结果渲染在Bitmap(目前支持ARGB8888格式的Bitmap), 后续可将该Bitmap在camera中进行显示。
+```java
+// 直接预测：不保存图片以及不渲染结果到Bitmap上
+public FaceDetectionResult predict(Bitmap ARGB8888Bitmap)；
+public FaceDetectionResult predict(Bitmap ARGB8888Bitmap, float confThreshold, float nmsIouThreshold)； // 设置置信度阈值和NMS阈值
+// 预测并且可视化：预测结果以及可视化，并将可视化后的图片保存到指定的途径，以及将可视化结果渲染在Bitmap上
+public FaceDetectionResult predict(Bitmap ARGB8888Bitmap, String savedImagePath, float confThreshold, float nmsIouThreshold);
+public FaceDetectionResult predict(Bitmap ARGB8888Bitmap, boolean rendering, float confThreshold, float nmsIouThreshold); // 只渲染 不保存图片
+```
+- 模型资源释放 API：调用 release() API 可以释放模型资源，返回true表示释放成功，false表示失败；调用 initialized() 可以判断模型是否初始化成功，true表示初始化成功，false表示失败。
+```java
+public boolean release(); // 释放native资源  
+public boolean initialized(); // 检查是否初始化成功
+```
+
+- RuntimeOption设置说明  
+```java  
+public void enableLiteFp16(); // 开启fp16精度推理
+public void disableLiteFP16(); // 关闭fp16精度推理
+public void setCpuThreadNum(int threadNum); // 设置线程数
+public void setLitePowerMode(LitePowerMode mode);  // 设置能耗模式
+public void setLitePowerMode(String modeStr);  // 通过字符串形式设置能耗模式
+```
+
+- 模型结果SegmentationResult说明  
+```java
+public class FaceDetectionResult {
+  public float[][] mBoxes; // [n,4] 检测框 (x1,y1,x2,y2)
+  public float[] mScores;  // [n]   每个检测框得分(置信度，概率值)
+  public float[][] mLandmarks; // [nx?,2] 每个检测到的人脸对应关键点
+  int mLandmarksPerFace = 0;  // 每个人脸对应的关键点个数
+  public boolean initialized(); // 检测结果是否有效
+}  
+```  
+其他参考：C++/Python对应的FaceDetectionResult说明: [api/vision_results/face_detection_result.md](https://github.com/PaddlePaddle/FastDeploy/blob/develop/docs/api/vision_results/face_detection_result.md)
+
+
+- 模型调用示例1：使用构造函数以及默认的RuntimeOption
+```java  
+import java.nio.ByteBuffer;
+import android.graphics.Bitmap;
+import android.opengl.GLES20;
+
+import com.baidu.paddle.fastdeploy.vision.FaceDetectionResult;
+import com.baidu.paddle.fastdeploy.vision.facedet.SCRFD;
+
+// 初始化模型
+SCRFD model = new SCRFD(
+  "scrfd_500m_bnkps_shape320x320_pd/model.pdmodel",
+  "scrfd_500m_bnkps_shape320x320_pd/model.pdiparams");
+
+// 读取图片: 以下仅为读取Bitmap的伪代码
+ByteBuffer pixelBuffer = ByteBuffer.allocate(width * height * 4);
+GLES20.glReadPixels(0, 0, width, height, GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, pixelBuffer);
+Bitmap ARGB8888ImageBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
+ARGB8888ImageBitmap.copyPixelsFromBuffer(pixelBuffer);
+
+// 直接预测返回 FaceDetectionResult
+FaceDetectionResult result = model.predict(ARGB8888ImageBitmap);
+
+// 释放模型资源  
+model.release();
+```  
+
+- 模型调用示例2: 在合适的程序节点，手动调用init，并自定义RuntimeOption
+```java  
+// import 同上 ...
+import com.baidu.paddle.fastdeploy.RuntimeOption;
+import com.baidu.paddle.fastdeploy.LitePowerMode;
+import com.baidu.paddle.fastdeploy.vision.FaceDetectionResult;
+import com.baidu.paddle.fastdeploy.vision.facedet.SCRFD;
+// 新建空模型
+SCRFD model = new SCRFD();  
+// 模型路径
+String modelFile = "scrfd_500m_bnkps_shape320x320_pd/model.pdmodel";
+String paramFile = "scrfd_500m_bnkps_shape320x320_pd/model.pdiparams";
+// 指定RuntimeOption
+RuntimeOption option = new RuntimeOption();
+option.setCpuThreadNum(2);
+option.setLitePowerMode(LitePowerMode.LITE_POWER_HIGH);
+option.enableLiteFp16();  
+// 使用init函数初始化
+model.init(modelFile, paramFile, option);
+// Bitmap读取、模型预测、资源释放 同上 ...
+```
+更详细的用法请参考 [FaceDetMainActivity](./app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/facedet/FaceDetMainActivity.java) 中的用法
+
+## 替换 FastDeploy SDK和模型  
+替换FastDeploy预测库和模型的步骤非常简单。预测库所在的位置为 `app/libs/fastdeploy-android-sdk-xxx.aar`，其中 `xxx` 表示当前您使用的预测库版本号。模型所在的位置为，`app/src/main/assets/models/scrfd_500m_bnkps_shape320x320_pd`。  
+- 替换FastDeploy Android SDK: 下载或编译最新的FastDeploy Android SDK，解压缩后放在 `app/libs` 目录下；详细配置文档可参考:  
+     - [在 Android 中使用 FastDeploy Java SDK](../../../../../java/android/)
+
+- 替换SCRFD模型的步骤：  
+  - 通过X2Paddle导出其他版本的SCRFD模型，请参考 [SCRFD文档](../README.md) 以及 [X2Paddle](https://github.com/PaddlePaddle/X2Paddle)  
+  - 将您的SCRFD模型放在 `app/src/main/assets/models` 目录下；  
+  - 修改 `app/src/main/res/values/strings.xml` 中模型路径的默认值，如：  
+```xml
+<!-- 将这个路径指修改成您的模型，如 models/scrfd_500m_bnkps_shape320x320_pd -->
+<string name="FACEDET_MODEL_DIR_DEFAULT">models/scrfd_500m_bnkps_shape320x320_pd</string>  
+```  
+
+## 更多参考文档
+如果您想知道更多的FastDeploy Java API文档以及如何通过JNI来接入FastDeploy C++ API感兴趣，可以参考以下内容:  
+- [在 Android 中使用 FastDeploy Java SDK](../../../../../java/android/)
+- [在 Android 中使用 FastDeploy C++ SDK](../../../../../docs/cn/faq/use_cpp_sdk_on_android.md)  

examples/vision/facedet/scrfd/android/app/build.gradle

@@ -0,0 +1,113 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdk 28
+
+    defaultConfig {
+        applicationId 'com.baidu.paddle.fastdeploy.app.examples'
+        minSdkVersion 15
+        //noinspection ExpiredTargetSdkVersion
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+}
+
+dependencies {
+    implementation fileTree(include: ['*.aar'], dir: 'libs')
+    implementation 'com.android.support:appcompat-v7:28.0.0'
+    //noinspection GradleDependency
+    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'com.android.support:design:28.0.0'
+    implementation 'org.jetbrains:annotations:15.0'
+    //noinspection GradleDependency
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+}
+
+def FD_MODEL = [
+        [
+                'src' : 'https://bj.bcebos.com/paddlehub/fastdeploy/scrfd_500m_bnkps_shape320x320_pd.tgz',
+                'dest': 'src/main/assets/models'
+        ]
+]
+
+def FD_JAVA_SDK = [
+        [
+                'src' : 'https://bj.bcebos.com/fastdeploy/test/fastdeploy-android-sdk-latest-dev.aar',
+                'dest': 'libs'
+        ]
+]
+
+task downloadAndExtractModels(type: DefaultTask) {
+    doFirst {
+        println "Downloading and extracting fastdeploy models ..."
+    }
+    doLast {
+        String cachePath = "cache"
+        if (!file("${cachePath}").exists()) {
+            mkdir "${cachePath}"
+        }
+        FD_MODEL.eachWithIndex { model, index ->
+            String[] modelPaths = model.src.split("/")
+            String modelName = modelPaths[modelPaths.length - 1]
+            // Download the target model if not exists
+            boolean copyFiles = !file("${model.dest}").exists()
+            if (!file("${cachePath}/${modelName}").exists()) {
+                println "Downloading ${model.src} -> ${cachePath}/${modelName}"
+                ant.get(src: model.src, dest: file("${cachePath}/${modelName}"))
+                copyFiles = true
+            }
+            if (copyFiles) {
+                println "Coping ${cachePath}/${modelName} -> ${model.dest}"
+                copy {
+                    from tarTree("${cachePath}/${modelName}")
+                    into "${model.dest}"
+                }
+            }
+        }
+    }
+}
+
+task downloadAndExtractSDKs(type: DefaultTask) {
+    doFirst {
+        println "Downloading and extracting fastdeploy android java sdk ..."
+    }
+    doLast {
+        String cachePath = "cache"
+        if (!file("${cachePath}").exists()) {
+            mkdir "${cachePath}"
+        }
+        FD_JAVA_SDK.eachWithIndex { sdk, index ->
+            String[] sdkPaths = sdk.src.split("/")
+            String sdkName = sdkPaths[sdkPaths.length - 1]
+            // Download the target SDK if not exists
+            boolean copyFiles = !file("${sdk.dest}/${sdkName}").exists()
+            if (!file("${cachePath}/${sdkName}").exists()) {
+                println "Downloading ${sdk.src} -> ${cachePath}/${sdkName}"
+                ant.get(src: sdk.src, dest: file("${cachePath}/${sdkName}"))
+                copyFiles = true
+            }
+            if (copyFiles) {
+                println "Coping ${cachePath}/${sdkName} -> ${sdk.dest}/${sdkName}"
+                copy {
+                    from "${cachePath}/${sdkName}"
+                    into "${sdk.dest}"
+                }
+            }
+        }
+    }
+}
+
+preBuild.dependsOn downloadAndExtractSDKs
+preBuild.dependsOn downloadAndExtractModels

examples/vision/facedet/scrfd/android/app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

examples/vision/facedet/scrfd/android/app/src/androidTest/java/com/baidu/paddle/fastdeploy/ExampleInstrumentedTest.java

@@ -0,0 +1,26 @@
+package com.baidu.paddle.fastdeploy;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.baidu.paddle.fastdeploy", appContext.getPackageName());
+    }
+}

examples/vision/facedet/scrfd/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.baidu.paddle.fastdeploy.app.examples">
+
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.CAMERA"/>
+    <uses-feature android:name="android.hardware.camera" />
+    <uses-feature android:name="android.hardware.camera.autofocus" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".facedet.FaceDetMainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".facedet.FaceDetSettingsActivity"
+            android:label="Settings">
+        </activity>
+    </application>
+
+</manifest>

examples/vision/facedet/scrfd/android/app/src/main/assets/labels/coco_label_list.txt

@@ -0,0 +1,80 @@
+person
+bicycle
+car
+motorcycle
+airplane
+bus
+train
+truck
+boat
+traffic light
+fire hydrant
+stop sign
+parking meter
+bench
+bird
+cat
+dog
+horse
+sheep
+cow
+elephant
+bear
+zebra
+giraffe
+backpack
+umbrella
+handbag
+tie
+suitcase
+frisbee
+skis
+snowboard
+sports ball
+kite
+baseball bat
+baseball glove
+skateboard
+surfboard
+tennis racket
+bottle
+wine glass
+cup
+fork
+knife
+spoon
+bowl
+banana
+apple
+sandwich
+orange
+broccoli
+carrot
+hot dog
+pizza
+donut
+cake
+chair
+couch
+potted plant
+bed
+dining table
+toilet
+tv
+laptop
+mouse
+remote
+keyboard
+cell phone
+microwave
+oven
+toaster
+sink
+refrigerator
+book
+clock
+vase
+scissors
+teddy bear
+hair drier
+toothbrush

examples/vision/facedet/scrfd/android/app/src/main/assets/labels/en_dict.txt

@@ -0,0 +1,94 @@
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+:
+;
+<
+=
+>
+?
+@
+A
+B
+C
+D
+E
+F
+G
+H
+I
+J
+K
+L
+M
+N
+O
+P
+Q
+R
+S
+T
+U
+V
+W
+X
+Y
+Z
+[
+\
+]
+^
+_
+`
+a
+b
+c
+d
+e
+f
+g
+h
+i
+j
+k
+l
+m
+n
+o
+p
+q
+r
+s
+t
+u
+v
+w
+x
+y
+z
+{
+|
+}
+~
+!
+"
+#
+$
+%
+&
+'
+(
+)
+*
++
+,
+-
+.
+/

examples/vision/facedet/scrfd/android/app/src/main/assets/labels/pascalvoc_label_list

@@ -0,0 +1,21 @@
+background
+aeroplane
+bicycle
+bird
+boat
+bottle
+bus
+car
+cat
+chair
+cow
+diningtable
+dog
+horse
+motorbike
+person
+pottedplant
+sheep
+sofa
+train
+tvmonitor

examples/vision/facedet/scrfd/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/facedet/FaceDetMainActivity.java

@@ -0,0 +1,497 @@
+package com.baidu.paddle.fastdeploy.app.examples.facedet;
+
+import android.Manifest;
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
+import android.graphics.Bitmap;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.SystemClock;
+import android.preference.PreferenceManager;
+import android.support.annotation.NonNull;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
+import android.util.Log;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.Window;
+import android.view.WindowManager;
+import android.widget.ImageButton;
+import android.widget.ImageView;
+import android.widget.SeekBar;
+import android.widget.TextView;
+
+import com.baidu.paddle.fastdeploy.RuntimeOption;
+import com.baidu.paddle.fastdeploy.app.examples.R;
+import com.baidu.paddle.fastdeploy.app.ui.view.CameraSurfaceView;
+import com.baidu.paddle.fastdeploy.app.ui.view.ResultListView;
+import com.baidu.paddle.fastdeploy.app.ui.Utils;
+import com.baidu.paddle.fastdeploy.app.ui.view.adapter.BaseResultAdapter;
+import com.baidu.paddle.fastdeploy.app.ui.view.model.BaseResultModel;
+import com.baidu.paddle.fastdeploy.vision.FaceDetectionResult;
+import com.baidu.paddle.fastdeploy.vision.Visualize;
+import com.baidu.paddle.fastdeploy.vision.facedet.SCRFD;
+
+import static com.baidu.paddle.fastdeploy.app.ui.Utils.decodeBitmap;
+import static com.baidu.paddle.fastdeploy.app.ui.Utils.getRealPathFromURI;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+public class FaceDetMainActivity extends Activity implements View.OnClickListener, CameraSurfaceView.OnTextureChangedListener {
+    private static final String TAG = FaceDetMainActivity.class.getSimpleName();
+
+    CameraSurfaceView svPreview;
+    TextView tvStatus;
+    ImageButton btnSwitch;
+    ImageButton btnShutter;
+    ImageButton btnSettings;
+    ImageView realtimeToggleButton;
+    boolean isRealtimeStatusRunning = false;
+    ImageView backInPreview;
+    private ImageView albumSelectButton;
+    private View cameraPageView;
+    private ViewGroup resultPageView;
+    private ImageView resultImage;
+    private ImageView backInResult;
+    private SeekBar confidenceSeekbar;
+    private TextView seekbarText;
+    private float resultNum = 1.0f;
+    private ResultListView resultView;
+    private Bitmap picBitmap;
+    private Bitmap shutterBitmap;
+    private Bitmap originPicBitmap;
+    private Bitmap originShutterBitmap;
+    private boolean isShutterBitmapCopied = false;
+
+    public static final int TYPE_UNKNOWN = -1;
+    public static final int BTN_SHUTTER = 0;
+    public static final int ALBUM_SELECT = 1;
+    public static final int REALTIME_DETECT = 2;
+    private static int TYPE = REALTIME_DETECT;
+
+    private static final int REQUEST_PERMISSION_CODE_STORAGE = 101;
+    private static final int INTENT_CODE_PICK_IMAGE = 100;
+    private static final int TIME_SLEEP_INTERVAL = 50; // ms
+
+    long timeElapsed = 0;
+    long frameCounter = 0;
+
+    // Call 'init' and 'release' manually later
+    SCRFD predictor = new SCRFD();
+
+    public float[] scores;  // [n]
+    public boolean initialized = false;
+    private List<BaseResultModel> results = new ArrayList<>();
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // Fullscreen
+        requestWindowFeature(Window.FEATURE_NO_TITLE);
+        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
+
+        setContentView(R.layout.facedet_activity_main);
+
+        // Clear all setting items to avoid app crashing due to the incorrect settings
+        initSettings();
+
+        // Check and request CAMERA and WRITE_EXTERNAL_STORAGE permissions
+        if (!checkAllPermissions()) {
+            requestAllPermissions();
+        }
+
+        // Init the camera preview and UI components
+        initView();
+    }
+
+    @SuppressLint("NonConstantResourceId")
+    @Override
+    public void onClick(View v) {
+        switch (v.getId()) {
+            case R.id.btn_switch:
+                svPreview.switchCamera();
+                break;
+            case R.id.btn_shutter:
+                TYPE = BTN_SHUTTER;
+                shutterAndPauseCamera();
+                resultView.setAdapter(null);
+                break;
+            case R.id.btn_settings:
+                startActivity(new Intent(FaceDetMainActivity.this, FaceDetSettingsActivity.class));
+                break;
+            case R.id.realtime_toggle_btn:
+                toggleRealtimeStyle();
+                break;
+            case R.id.back_in_preview:
+                finish();
+                break;
+            case R.id.album_select:
+                TYPE = ALBUM_SELECT;
+                // Judge whether authority has been granted.
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
+                    // If this permission was requested before the application but the user refused the request, this method will return true.
+                    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_PERMISSION_CODE_STORAGE);
+                } else {
+                    Intent intent = new Intent(Intent.ACTION_PICK);
+                    intent.setType("image/*");
+                    startActivityForResult(intent, INTENT_CODE_PICK_IMAGE);
+                }
+                resultView.setAdapter(null);
+                break;
+            case R.id.back_in_result:
+                back();
+                break;
+        }
+    }
+
+    @Override
+    public void onBackPressed() {
+        super.onBackPressed();
+        back();
+    }
+
+    private void back() {
+        resultPageView.setVisibility(View.GONE);
+        cameraPageView.setVisibility(View.VISIBLE);
+        TYPE = REALTIME_DETECT;
+        isShutterBitmapCopied = false;
+        svPreview.onResume();
+        results.clear();
+        if (scores != null) {
+            scores = null;
+        }
+    }
+
+    private void shutterAndPauseCamera() {
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                try {
+                    // Sleep some times to ensure picture has been correctly shut.
+                    Thread.sleep(TIME_SLEEP_INTERVAL * 10); // 500ms
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+                runOnUiThread(new Runnable() {
+                    @SuppressLint("SetTextI18n")
+                    public void run() {
+                        // These codes will run in main thread.
+                        svPreview.onPause();
+                        cameraPageView.setVisibility(View.GONE);
+                        resultPageView.setVisibility(View.VISIBLE);
+                        seekbarText.setText(resultNum + "");
+                        confidenceSeekbar.setProgress((int) (resultNum * 100));
+                        if (shutterBitmap != null && !shutterBitmap.isRecycled()) {
+                            resultImage.setImageBitmap(shutterBitmap);
+                        } else {
+                            new AlertDialog.Builder(FaceDetMainActivity.this)
+                                    .setTitle("Empty Result!")
+                                    .setMessage("Current picture is empty, please shutting it again!")
+                                    .setCancelable(true)
+                                    .show();
+                        }
+                    }
+                });
+
+            }
+        }).start();
+    }
+
+    private void copyBitmapFromCamera(Bitmap ARGB8888ImageBitmap) {
+        if (isShutterBitmapCopied || ARGB8888ImageBitmap == null) {
+            return;
+        }
+        if (!ARGB8888ImageBitmap.isRecycled()) {
+            synchronized (this) {
+                shutterBitmap = ARGB8888ImageBitmap.copy(Bitmap.Config.ARGB_8888, true);
+                originShutterBitmap = ARGB8888ImageBitmap.copy(Bitmap.Config.ARGB_8888, true);
+            }
+            SystemClock.sleep(TIME_SLEEP_INTERVAL);
+            isShutterBitmapCopied = true;
+        }
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (requestCode == INTENT_CODE_PICK_IMAGE) {
+            if (resultCode == Activity.RESULT_OK) {
+                cameraPageView.setVisibility(View.GONE);
+                resultPageView.setVisibility(View.VISIBLE);
+                seekbarText.setText(resultNum + "");
+                confidenceSeekbar.setProgress((int) (resultNum * 100));
+                Uri uri = data.getData();
+                String path = getRealPathFromURI(this, uri);
+                picBitmap = decodeBitmap(path, 720, 1280);
+                originPicBitmap = picBitmap.copy(Bitmap.Config.ARGB_8888, true);
+                resultImage.setImageBitmap(picBitmap);
+            }
+        }
+    }
+
+    private void toggleRealtimeStyle() {
+        if (isRealtimeStatusRunning) {
+            isRealtimeStatusRunning = false;
+            realtimeToggleButton.setImageResource(R.drawable.realtime_stop_btn);
+            svPreview.setOnTextureChangedListener(this);
+            tvStatus.setVisibility(View.VISIBLE);
+        } else {
+            isRealtimeStatusRunning = true;
+            realtimeToggleButton.setImageResource(R.drawable.realtime_start_btn);
+            tvStatus.setVisibility(View.GONE);
+            isShutterBitmapCopied = false;
+            // Camera is still working but detecting loop is on pause.
+            svPreview.setOnTextureChangedListener(new CameraSurfaceView.OnTextureChangedListener() {
+                @Override
+                public boolean onTextureChanged(Bitmap ARGB8888ImageBitmap) {
+                    if (TYPE == BTN_SHUTTER) {
+                        copyBitmapFromCamera(ARGB8888ImageBitmap);
+                    }
+                    return false;
+                }
+            });
+        }
+    }
+
+    @Override
+    public boolean onTextureChanged(Bitmap ARGB8888ImageBitmap) {
+        if (TYPE == BTN_SHUTTER) {
+            copyBitmapFromCamera(ARGB8888ImageBitmap);
+            return false;
+        }
+
+        boolean modified = false;
+
+        long tc = System.currentTimeMillis();
+        FaceDetectionResult result = predictor.predict(
+                ARGB8888ImageBitmap, FaceDetSettingsActivity.scoreThreshold, 0.4f);
+        timeElapsed += (System.currentTimeMillis() - tc);
+
+        Visualize.visFaceDetection(ARGB8888ImageBitmap, result);
+        modified = result.initialized();
+        frameCounter++;
+        if (frameCounter >= 30) {
+            final int fps = (int) (1000 / (timeElapsed / 30));
+            runOnUiThread(new Runnable() {
+                @SuppressLint("SetTextI18n")
+                public void run() {
+                    tvStatus.setText(Integer.toString(fps) + "fps");
+                }
+            });
+            frameCounter = 0;
+            timeElapsed = 0;
+        }
+        return modified;
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        // Reload settings and re-initialize the predictor
+        checkAndUpdateSettings();
+        // Open camera until the permissions have been granted
+        if (!checkAllPermissions()) {
+            svPreview.disableCamera();
+        }
+        svPreview.onResume();
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        svPreview.onPause();
+    }
+
+    @Override
+    protected void onDestroy() {
+        if (predictor != null) {
+            predictor.release();
+        }
+        super.onDestroy();
+    }
+
+    public void initView() {
+        TYPE = REALTIME_DETECT;
+        // (1) EXPECTED_PREVIEW_WIDTH should mean 'height' and EXPECTED_PREVIEW_HEIGHT
+        // should mean 'width' if the camera display orientation is 90 | 270 degree
+        // (Hold the phone upright to record video)
+        // (2) Smaller resolution is more suitable for lite face detection
+        // on mobile phone. So, we set this preview size (480,480) here.
+        // CameraSurfaceView.EXPECTED_PREVIEW_WIDTH = 480;
+        // CameraSurfaceView.EXPECTED_PREVIEW_HEIGHT = 480;
+        svPreview = (CameraSurfaceView) findViewById(R.id.sv_preview);
+        svPreview.setOnTextureChangedListener(this);
+        svPreview.switchCamera(); // Front camera for HumanSeg
+
+        tvStatus = (TextView) findViewById(R.id.tv_status);
+        btnSwitch = (ImageButton) findViewById(R.id.btn_switch);
+        btnSwitch.setOnClickListener(this);
+        btnShutter = (ImageButton) findViewById(R.id.btn_shutter);
+        btnShutter.setOnClickListener(this);
+        btnSettings = (ImageButton) findViewById(R.id.btn_settings);
+        btnSettings.setOnClickListener(this);
+        realtimeToggleButton = findViewById(R.id.realtime_toggle_btn);
+        realtimeToggleButton.setOnClickListener(this);
+        backInPreview = findViewById(R.id.back_in_preview);
+        backInPreview.setOnClickListener(this);
+        albumSelectButton = findViewById(R.id.album_select);
+        albumSelectButton.setOnClickListener(this);
+        cameraPageView = findViewById(R.id.camera_page);
+        resultPageView = findViewById(R.id.result_page);
+        resultImage = findViewById(R.id.result_image);
+        backInResult = findViewById(R.id.back_in_result);
+        backInResult.setOnClickListener(this);
+        confidenceSeekbar = findViewById(R.id.confidence_seekbar);
+        seekbarText = findViewById(R.id.seekbar_text);
+        resultView = findViewById(R.id.result_list_view);
+
+        confidenceSeekbar.setMax(100);
+        confidenceSeekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+                float resultConfidence = seekBar.getProgress() / 100f;
+                BigDecimal bd = new BigDecimal(resultConfidence);
+                resultNum = bd.setScale(1, BigDecimal.ROUND_HALF_UP).floatValue();
+                seekbarText.setText(resultNum + "");
+                confidenceSeekbar.setProgress((int) (resultNum * 100));
+                results.clear();
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+                runOnUiThread(new Runnable() {
+                    @Override
+                    public void run() {
+                        if (TYPE == ALBUM_SELECT) {
+                            SystemClock.sleep(TIME_SLEEP_INTERVAL * 10); // 500ms
+                            detail(picBitmap);
+                            picBitmap = originPicBitmap.copy(Bitmap.Config.ARGB_8888, true);
+                        } else {
+                            SystemClock.sleep(TIME_SLEEP_INTERVAL * 10); // 500ms
+                            detail(shutterBitmap);
+                            shutterBitmap = originShutterBitmap.copy(Bitmap.Config.ARGB_8888, true);
+                        }
+                    }
+                });
+            }
+        });
+    }
+
+    private void detail(Bitmap bitmap) {
+        FaceDetectionResult result = predictor.predict(bitmap, true, resultNum, 0.4f);
+
+        scores = result.mScores;
+
+        initialized = result.initialized();
+        if (initialized) {
+            for (int i = 0; i < scores.length; i++) {
+                if (scores[i] > resultNum) {
+                    results.add(new BaseResultModel(i + 1, "face", scores[i]));
+                }
+            }
+        }
+        BaseResultAdapter adapter = new BaseResultAdapter(getBaseContext(), R.layout.facedet_result_page_item, results);
+        resultView.setAdapter(adapter);
+        resultView.invalidate();
+
+        resultImage.setImageBitmap(bitmap);
+        resultNum = 1.0f;
+    }
+
+    @SuppressLint("ApplySharedPref")
+    public void initSettings() {
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+        SharedPreferences.Editor editor = sharedPreferences.edit();
+        editor.clear();
+        editor.commit();
+        FaceDetSettingsActivity.resetSettings();
+    }
+
+    public void checkAndUpdateSettings() {
+        if (FaceDetSettingsActivity.checkAndUpdateSettings(this)) {
+            String realModelDir = getCacheDir() + "/" + FaceDetSettingsActivity.modelDir;
+            Utils.copyDirectoryFromAssets(this, FaceDetSettingsActivity.modelDir, realModelDir);
+
+            String modelFile = realModelDir + "/" + "model.pdmodel";
+            String paramsFile = realModelDir + "/" + "model.pdiparams";
+            RuntimeOption option = new RuntimeOption();
+            option.setCpuThreadNum(FaceDetSettingsActivity.cpuThreadNum);
+            option.setLitePowerMode(FaceDetSettingsActivity.cpuPowerMode);
+            if (Boolean.parseBoolean(FaceDetSettingsActivity.enableLiteFp16)) {
+                option.enableLiteFp16();
+            }
+            predictor.init(modelFile, paramsFile, option);
+        }
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
+                                           @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+        if (grantResults[0] != PackageManager.PERMISSION_GRANTED || grantResults[1] != PackageManager.PERMISSION_GRANTED) {
+            new AlertDialog.Builder(FaceDetMainActivity.this)
+                    .setTitle("Permission denied")
+                    .setMessage("Click to force quit the app, then open Settings->Apps & notifications->Target " +
+                            "App->Permissions to grant all of the permissions.")
+                    .setCancelable(false)
+                    .setPositiveButton("Exit", new DialogInterface.OnClickListener() {
+                        @Override
+                        public void onClick(DialogInterface dialog, int which) {
+                            FaceDetMainActivity.this.finish();
+                        }
+                    }).show();
+        }
+    }
+
+    private void requestAllPermissions() {
+        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,
+                Manifest.permission.CAMERA}, 0);
+    }
+
+    private boolean checkAllPermissions() {
+        return ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED
+                && ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED;
+    }
+
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

examples/vision/facedet/scrfd/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/facedet/FaceDetSettingsActivity.java

@@ -0,0 +1,181 @@
+package com.baidu.paddle.fastdeploy.app.examples.facedet;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.preference.EditTextPreference;
+import android.preference.ListPreference;
+import android.preference.PreferenceManager;
+import android.support.v7.app.ActionBar;
+
+import com.baidu.paddle.fastdeploy.app.examples.R;
+import com.baidu.paddle.fastdeploy.app.ui.Utils;
+import com.baidu.paddle.fastdeploy.app.ui.view.AppCompatPreferenceActivity;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class FaceDetSettingsActivity extends AppCompatPreferenceActivity implements
+        SharedPreferences.OnSharedPreferenceChangeListener {
+    private static final String TAG = FaceDetSettingsActivity.class.getSimpleName();
+
+    static public int selectedModelIdx = -1;
+    static public String modelDir = "";
+    static public int cpuThreadNum = 2;
+    static public String cpuPowerMode = "";
+    static public float scoreThreshold = 0.25f;
+    static public String enableLiteFp16 = "true";
+
+    ListPreference lpChoosePreInstalledModel = null;
+    EditTextPreference etModelDir = null;
+    ListPreference lpCPUThreadNum = null;
+    ListPreference lpCPUPowerMode = null;
+    EditTextPreference etScoreThreshold = null;
+    ListPreference lpEnableLiteFp16 = null;
+
+    List<String> preInstalledModelDirs = null;
+    List<String> preInstalledCPUThreadNums = null;
+    List<String> preInstalledCPUPowerModes = null;
+    List<String> preInstalledScoreThresholds = null;
+    List<String> preInstalledEnableLiteFp16s = null;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        addPreferencesFromResource(R.xml.facedet_setting);
+        ActionBar supportActionBar = getSupportActionBar();
+        if (supportActionBar != null) {
+            supportActionBar.setDisplayHomeAsUpEnabled(true);
+        }
+
+        // Initialize pre-installed models
+        preInstalledModelDirs = new ArrayList<String>();
+        preInstalledCPUThreadNums = new ArrayList<String>();
+        preInstalledCPUPowerModes = new ArrayList<String>();
+        preInstalledScoreThresholds = new ArrayList<String>();
+        preInstalledEnableLiteFp16s = new ArrayList<String>();
+        preInstalledModelDirs.add(getString(R.string.FACEDET_MODEL_DIR_DEFAULT));
+        preInstalledCPUThreadNums.add(getString(R.string.CPU_THREAD_NUM_DEFAULT));
+        preInstalledCPUPowerModes.add(getString(R.string.CPU_POWER_MODE_DEFAULT));
+        preInstalledScoreThresholds.add(getString(R.string.SCORE_THRESHOLD_FACEDET));
+        preInstalledEnableLiteFp16s.add(getString(R.string.ENABLE_LITE_FP16_MODE_DEFAULT));
+
+        // Setup UI components
+        lpChoosePreInstalledModel =
+                (ListPreference) findPreference(getString(R.string.CHOOSE_PRE_INSTALLED_MODEL_KEY));
+        String[] preInstalledModelNames = new String[preInstalledModelDirs.size()];
+        for (int i = 0; i < preInstalledModelDirs.size(); i++) {
+            preInstalledModelNames[i] = preInstalledModelDirs.get(i).substring(preInstalledModelDirs.get(i).lastIndexOf("/") + 1);
+        }
+        lpChoosePreInstalledModel.setEntries(preInstalledModelNames);
+        lpChoosePreInstalledModel.setEntryValues(preInstalledModelDirs.toArray(new String[preInstalledModelDirs.size()]));
+        lpCPUThreadNum = (ListPreference) findPreference(getString(R.string.CPU_THREAD_NUM_KEY));
+        lpCPUPowerMode = (ListPreference) findPreference(getString(R.string.CPU_POWER_MODE_KEY));
+        etModelDir = (EditTextPreference) findPreference(getString(R.string.MODEL_DIR_KEY));
+        etModelDir.setTitle("Model dir (SDCard: " + Utils.getSDCardDirectory() + ")");
+        etScoreThreshold = (EditTextPreference) findPreference(getString(R.string.SCORE_THRESHOLD_KEY));
+        lpEnableLiteFp16 = (ListPreference) findPreference(getString(R.string.ENABLE_LITE_FP16_MODE_KEY));
+    }
+
+    @SuppressLint("ApplySharedPref")
+    private void reloadSettingsAndUpdateUI() {
+        SharedPreferences sharedPreferences = getPreferenceScreen().getSharedPreferences();
+
+        String selected_model_dir = sharedPreferences.getString(getString(R.string.CHOOSE_PRE_INSTALLED_MODEL_KEY),
+                getString(R.string.FACEDET_MODEL_DIR_DEFAULT));
+        int selected_model_idx = lpChoosePreInstalledModel.findIndexOfValue(selected_model_dir);
+        if (selected_model_idx >= 0 && selected_model_idx < preInstalledModelDirs.size() && selected_model_idx != selectedModelIdx) {
+            SharedPreferences.Editor editor = sharedPreferences.edit();
+            editor.putString(getString(R.string.MODEL_DIR_KEY), preInstalledModelDirs.get(selected_model_idx));
+            editor.putString(getString(R.string.CPU_THREAD_NUM_KEY), preInstalledCPUThreadNums.get(selected_model_idx));
+            editor.putString(getString(R.string.CPU_POWER_MODE_KEY), preInstalledCPUPowerModes.get(selected_model_idx));
+            editor.putString(getString(R.string.SCORE_THRESHOLD_KEY), preInstalledScoreThresholds.get(selected_model_idx));
+            editor.putString(getString(R.string.ENABLE_LITE_FP16_MODE_DEFAULT), preInstalledEnableLiteFp16s.get(selected_model_idx));
+            editor.commit();
+            lpChoosePreInstalledModel.setSummary(selected_model_dir);
+            selectedModelIdx = selected_model_idx;
+        }
+
+        String model_dir = sharedPreferences.getString(getString(R.string.MODEL_DIR_KEY),
+                getString(R.string.FACEDET_MODEL_DIR_DEFAULT));
+        String cpu_thread_num = sharedPreferences.getString(getString(R.string.CPU_THREAD_NUM_KEY),
+                getString(R.string.CPU_THREAD_NUM_DEFAULT));
+        String cpu_power_mode = sharedPreferences.getString(getString(R.string.CPU_POWER_MODE_KEY),
+                getString(R.string.CPU_POWER_MODE_DEFAULT));
+        String score_threshold = sharedPreferences.getString(getString(R.string.SCORE_THRESHOLD_KEY),
+                getString(R.string.SCORE_THRESHOLD_FACEDET));
+        String enable_lite_fp16 = sharedPreferences.getString(getString(R.string.ENABLE_LITE_FP16_MODE_KEY),
+                getString(R.string.ENABLE_LITE_FP16_MODE_DEFAULT));
+
+        etModelDir.setSummary(model_dir);
+        lpCPUThreadNum.setValue(cpu_thread_num);
+        lpCPUThreadNum.setSummary(cpu_thread_num);
+        lpCPUPowerMode.setValue(cpu_power_mode);
+        lpCPUPowerMode.setSummary(cpu_power_mode);
+        etScoreThreshold.setSummary(score_threshold);
+        etScoreThreshold.setText(score_threshold);
+        lpEnableLiteFp16.setValue(enable_lite_fp16);
+        lpEnableLiteFp16.setSummary(enable_lite_fp16);
+
+    }
+
+    static boolean checkAndUpdateSettings(Context ctx) {
+        boolean settingsChanged = false;
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(ctx);
+
+        String model_dir = sharedPreferences.getString(ctx.getString(R.string.MODEL_DIR_KEY),
+                ctx.getString(R.string.FACEDET_MODEL_DIR_DEFAULT));
+        settingsChanged |= !modelDir.equalsIgnoreCase(model_dir);
+        modelDir = model_dir;
+
+        String cpu_thread_num = sharedPreferences.getString(ctx.getString(R.string.CPU_THREAD_NUM_KEY),
+                ctx.getString(R.string.CPU_THREAD_NUM_DEFAULT));
+        settingsChanged |= cpuThreadNum != Integer.parseInt(cpu_thread_num);
+        cpuThreadNum = Integer.parseInt(cpu_thread_num);
+
+        String cpu_power_mode = sharedPreferences.getString(ctx.getString(R.string.CPU_POWER_MODE_KEY),
+                ctx.getString(R.string.CPU_POWER_MODE_DEFAULT));
+        settingsChanged |= !cpuPowerMode.equalsIgnoreCase(cpu_power_mode);
+        cpuPowerMode = cpu_power_mode;
+
+        String score_threshold = sharedPreferences.getString(ctx.getString(R.string.SCORE_THRESHOLD_KEY),
+                ctx.getString(R.string.SCORE_THRESHOLD_FACEDET));
+        settingsChanged |= scoreThreshold != Float.parseFloat(score_threshold);
+        scoreThreshold = Float.parseFloat(score_threshold);
+
+        String enable_lite_fp16 = sharedPreferences.getString(ctx.getString(R.string.ENABLE_LITE_FP16_MODE_KEY),
+                ctx.getString(R.string.ENABLE_LITE_FP16_MODE_DEFAULT));
+        settingsChanged |= !enableLiteFp16.equalsIgnoreCase(enable_lite_fp16);
+        enableLiteFp16 = enable_lite_fp16;
+
+        return settingsChanged;
+    }
+
+    static void resetSettings() {
+        selectedModelIdx = -1;
+        modelDir = "";
+        cpuThreadNum = 2;
+        cpuPowerMode = "";
+        scoreThreshold = 0.25f; // confThreshold
+        enableLiteFp16 = "true";
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);
+        reloadSettingsAndUpdateUI();
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
+    }
+
+    @Override
+    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
+        reloadSettingsAndUpdateUI();
+    }
+}

examples/vision/facedet/scrfd/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/ui/Utils.java

@@ -0,0 +1,313 @@
+package com.baidu.paddle.fastdeploy.app.ui;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.database.Cursor;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.hardware.Camera;
+import android.net.Uri;
+import android.opengl.GLES20;
+import android.os.Environment;
+import android.provider.MediaStore;
+import android.util.Log;
+import android.view.Surface;
+import android.view.WindowManager;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Utils {
+    private static final String TAG = Utils.class.getSimpleName();
+
+    public static void RecursiveCreateDirectories(String fileDir) {
+        String[] fileDirs = fileDir.split("\\/");
+        String topPath = "";
+        for (int i = 0; i < fileDirs.length; i++) {
+            topPath += "/" + fileDirs[i];
+            File file = new File(topPath);
+            if (file.exists()) {
+                continue;
+            } else {
+                file.mkdir();
+            }
+        }
+    }
+
+    public static void copyFileFromAssets(Context appCtx, String srcPath, String dstPath) {
+        if (srcPath.isEmpty() || dstPath.isEmpty()) {
+            return;
+        }
+        String dstDir = dstPath.substring(0, dstPath.lastIndexOf('/'));
+        if (dstDir.length() > 0) {
+            RecursiveCreateDirectories(dstDir);
+        }
+        InputStream is = null;
+        OutputStream os = null;
+        try {
+            is = new BufferedInputStream(appCtx.getAssets().open(srcPath));
+            os = new BufferedOutputStream(new FileOutputStream(new File(dstPath)));
+            byte[] buffer = new byte[1024];
+            int length = 0;
+            while ((length = is.read(buffer)) != -1) {
+                os.write(buffer, 0, length);
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                os.close();
+                is.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public static void copyDirectoryFromAssets(Context appCtx, String srcDir, String dstDir) {
+        if (srcDir.isEmpty() || dstDir.isEmpty()) {
+            return;
+        }
+        try {
+            if (!new File(dstDir).exists()) {
+                new File(dstDir).mkdirs();
+            }
+            for (String fileName : appCtx.getAssets().list(srcDir)) {
+                String srcSubPath = srcDir + File.separator + fileName;
+                String dstSubPath = dstDir + File.separator + fileName;
+                if (new File(srcSubPath).isDirectory()) {
+                    copyDirectoryFromAssets(appCtx, srcSubPath, dstSubPath);
+                } else {
+                    copyFileFromAssets(appCtx, srcSubPath, dstSubPath);
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static float[] parseFloatsFromString(String string, String delimiter) {
+        String[] pieces = string.trim().toLowerCase().split(delimiter);
+        float[] floats = new float[pieces.length];
+        for (int i = 0; i < pieces.length; i++) {
+            floats[i] = Float.parseFloat(pieces[i].trim());
+        }
+        return floats;
+    }
+
+    public static long[] parseLongsFromString(String string, String delimiter) {
+        String[] pieces = string.trim().toLowerCase().split(delimiter);
+        long[] longs = new long[pieces.length];
+        for (int i = 0; i < pieces.length; i++) {
+            longs[i] = Long.parseLong(pieces[i].trim());
+        }
+        return longs;
+    }
+
+    public static String getSDCardDirectory() {
+        return Environment.getExternalStorageDirectory().getAbsolutePath();
+    }
+
+    public static String getDCIMDirectory() {
+        return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).getAbsolutePath();
+    }
+
+    public static Camera.Size getOptimalPreviewSize(List<Camera.Size> sizes, int w, int h) {
+        final double ASPECT_TOLERANCE = 0.3;
+        double targetRatio = (double) w / h;
+        if (sizes == null) return null;
+
+        Camera.Size optimalSize = null;
+        double minDiff = Double.MAX_VALUE;
+
+        int targetHeight = h;
+
+        // Try to find an size match aspect ratio and size
+        for (Camera.Size size : sizes) {
+            double ratio = (double) size.width / size.height;
+            if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue;
+            if (Math.abs(size.height - targetHeight) < minDiff) {
+                optimalSize = size;
+                minDiff = Math.abs(size.height - targetHeight);
+            }
+        }
+
+        // Cannot find the one match the aspect ratio, ignore the requirement
+        if (optimalSize == null) {
+            minDiff = Double.MAX_VALUE;
+            for (Camera.Size size : sizes) {
+                if (Math.abs(size.height - targetHeight) < minDiff) {
+                    optimalSize = size;
+                    minDiff = Math.abs(size.height - targetHeight);
+                }
+            }
+        }
+        return optimalSize;
+    }
+
+    public static int getScreenWidth() {
+        return Resources.getSystem().getDisplayMetrics().widthPixels;
+    }
+
+    public static int getScreenHeight() {
+        return Resources.getSystem().getDisplayMetrics().heightPixels;
+    }
+
+    public static int getCameraDisplayOrientation(Context context, int cameraId) {
+        Camera.CameraInfo info = new Camera.CameraInfo();
+        Camera.getCameraInfo(cameraId, info);
+        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        int rotation = wm.getDefaultDisplay().getRotation();
+        int degrees = 0;
+        switch (rotation) {
+            case Surface.ROTATION_0:
+                degrees = 0;
+                break;
+            case Surface.ROTATION_90:
+                degrees = 90;
+                break;
+            case Surface.ROTATION_180:
+                degrees = 180;
+                break;
+            case Surface.ROTATION_270:
+                degrees = 270;
+                break;
+        }
+        int result;
+        if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
+            result = (info.orientation + degrees) % 360;
+            result = (360 - result) % 360;   // compensate the mirror
+        } else {
+            // back-facing
+            result = (info.orientation - degrees + 360) % 360;
+        }
+        return result;
+    }
+
+    public static int createShaderProgram(String vss, String fss) {
+        int vshader = GLES20.glCreateShader(GLES20.GL_VERTEX_SHADER);
+        GLES20.glShaderSource(vshader, vss);
+        GLES20.glCompileShader(vshader);
+        int[] status = new int[1];
+        GLES20.glGetShaderiv(vshader, GLES20.GL_COMPILE_STATUS, status, 0);
+        if (status[0] == 0) {
+            Log.e(TAG, GLES20.glGetShaderInfoLog(vshader));
+            GLES20.glDeleteShader(vshader);
+            vshader = 0;
+            return 0;
+        }
+
+        int fshader = GLES20.glCreateShader(GLES20.GL_FRAGMENT_SHADER);
+        GLES20.glShaderSource(fshader, fss);
+        GLES20.glCompileShader(fshader);
+        GLES20.glGetShaderiv(fshader, GLES20.GL_COMPILE_STATUS, status, 0);
+        if (status[0] == 0) {
+            Log.e(TAG, GLES20.glGetShaderInfoLog(fshader));
+            GLES20.glDeleteShader(vshader);
+            GLES20.glDeleteShader(fshader);
+            fshader = 0;
+            return 0;
+        }
+
+        int program = GLES20.glCreateProgram();
+        GLES20.glAttachShader(program, vshader);
+        GLES20.glAttachShader(program, fshader);
+        GLES20.glLinkProgram(program);
+        GLES20.glDeleteShader(vshader);
+        GLES20.glDeleteShader(fshader);
+        GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, status, 0);
+        if (status[0] == 0) {
+            Log.e(TAG, GLES20.glGetProgramInfoLog(program));
+            program = 0;
+            return 0;
+        }
+        GLES20.glValidateProgram(program);
+        GLES20.glGetProgramiv(program, GLES20.GL_VALIDATE_STATUS, status, 0);
+        if (status[0] == 0) {
+            Log.e(TAG, GLES20.glGetProgramInfoLog(program));
+            GLES20.glDeleteProgram(program);
+            program = 0;
+            return 0;
+        }
+
+        return program;
+    }
+
+    public static boolean isSupportedNPU() {
+        String hardware = android.os.Build.HARDWARE;
+        return hardware.equalsIgnoreCase("kirin810") || hardware.equalsIgnoreCase("kirin990");
+    }
+
+    public static Bitmap decodeBitmap(String path, int displayWidth, int displayHeight) {
+        BitmapFactory.Options op = new BitmapFactory.Options();
+        op.inJustDecodeBounds = true;// Only the width and height information of Bitmap is read, not the pixels.
+        Bitmap bmp = BitmapFactory.decodeFile(path, op); // Get size information.
+        int wRatio = (int) Math.ceil(op.outWidth / (float) displayWidth);// Get Scale Size.
+        int hRatio = (int) Math.ceil(op.outHeight / (float) displayHeight);
+        // If the specified size is exceeded, reduce the corresponding scale.
+        if (wRatio > 1 && hRatio > 1) {
+            if (wRatio > hRatio) {
+                // If it is too wide, we will reduce the width to the required size. Note that the height will become smaller.
+                op.inSampleSize = wRatio;
+            } else {
+                op.inSampleSize = hRatio;
+            }
+        }
+        op.inJustDecodeBounds = false;
+        bmp = BitmapFactory.decodeFile(path, op);
+        // Create a Bitmap with a given width and height from the original Bitmap.
+        return Bitmap.createScaledBitmap(bmp, displayWidth, displayHeight, true);
+    }
+
+    public static String getRealPathFromURI(Context context, Uri contentURI) {
+        String result;
+        Cursor cursor = null;
+        try {
+            cursor = context.getContentResolver().query(contentURI, null, null, null, null);
+        } catch (Throwable e) {
+            e.printStackTrace();
+        }
+        if (cursor == null) {
+            result = contentURI.getPath();
+        } else {
+            cursor.moveToFirst();
+            int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
+            result = cursor.getString(idx);
+            cursor.close();
+        }
+        return result;
+    }
+
+    public static List<String> readTxt(String txtPath) {
+        File file = new File(txtPath);
+        if (file.isFile() && file.exists()) {
+            try {
+                FileInputStream fileInputStream = new FileInputStream(file);
+                InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream);
+                BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
+                String text;
+                List<String> labels = new ArrayList<>();
+                while ((text = bufferedReader.readLine()) != null) {
+                    labels.add(text);
+                }
+                return labels;
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+        return null;
+    }
+}

examples/vision/facedet/scrfd/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/ui/layout/ActionBarLayout.java

@@ -0,0 +1,33 @@
+package com.baidu.paddle.fastdeploy.app.ui.layout;
+
+import android.content.Context;
+import android.graphics.Color;
+import android.support.annotation.Nullable;
+import android.util.AttributeSet;
+import android.widget.RelativeLayout;
+
+
+public class ActionBarLayout extends RelativeLayout {
+    private int layoutHeight = 150;
+
+    public ActionBarLayout(Context context) {
+        super(context);
+    }
+
+    public ActionBarLayout(Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public ActionBarLayout(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        int width = MeasureSpec.getSize(widthMeasureSpec);
+        setMeasuredDimension(width, layoutHeight);
+        setBackgroundColor(Color.BLACK);
+        setAlpha(0.9f);
+    }
+}

examples/vision/facedet/scrfd/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/ui/view/AppCompatPreferenceActivity.java

@@ -0,0 +1,111 @@
+package com.baidu.paddle.fastdeploy.app.ui.view;
+
+import android.content.res.Configuration;
+import android.os.Bundle;
+import android.preference.PreferenceActivity;
+import android.support.annotation.LayoutRes;
+import android.support.annotation.Nullable;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.AppCompatDelegate;
+import android.support.v7.widget.Toolbar;
+import android.view.MenuInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+/**
+ * A {@link PreferenceActivity} which implements and proxies the necessary calls
+ * to be used with AppCompat.
+ * <p>
+ * This technique can be used with an {@link android.app.Activity} class, not just
+ * {@link PreferenceActivity}.
+ */
+public abstract class AppCompatPreferenceActivity extends PreferenceActivity {
+    private AppCompatDelegate mDelegate;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        getDelegate().installViewFactory();
+        getDelegate().onCreate(savedInstanceState);
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    protected void onPostCreate(Bundle savedInstanceState) {
+        super.onPostCreate(savedInstanceState);
+        getDelegate().onPostCreate(savedInstanceState);
+    }
+
+    public ActionBar getSupportActionBar() {
+        return getDelegate().getSupportActionBar();
+    }
+
+    public void setSupportActionBar(@Nullable Toolbar toolbar) {
+        getDelegate().setSupportActionBar(toolbar);
+    }
+
+    @Override
+    public MenuInflater getMenuInflater() {
+        return getDelegate().getMenuInflater();
+    }
+
+    @Override
+    public void setContentView(@LayoutRes int layoutResID) {
+        getDelegate().setContentView(layoutResID);
+    }
+
+    @Override
+    public void setContentView(View view) {
+        getDelegate().setContentView(view);
+    }
+
+    @Override
+    public void setContentView(View view, ViewGroup.LayoutParams params) {
+        getDelegate().setContentView(view, params);
+    }
+
+    @Override
+    public void addContentView(View view, ViewGroup.LayoutParams params) {
+        getDelegate().addContentView(view, params);
+    }
+
+    @Override
+    protected void onPostResume() {
+        super.onPostResume();
+        getDelegate().onPostResume();
+    }
+
+    @Override
+    protected void onTitleChanged(CharSequence title, int color) {
+        super.onTitleChanged(title, color);
+        getDelegate().setTitle(title);
+    }
+
+    @Override
+    public void onConfigurationChanged(Configuration newConfig) {
+        super.onConfigurationChanged(newConfig);
+        getDelegate().onConfigurationChanged(newConfig);
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        getDelegate().onStop();
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        getDelegate().onDestroy();
+    }
+
+    public void invalidateOptionsMenu() {
+        getDelegate().invalidateOptionsMenu();
+    }
+
+    private AppCompatDelegate getDelegate() {
+        if (mDelegate == null) {
+            mDelegate = AppCompatDelegate.create(this, null);
+        }
+        return mDelegate;
+    }
+}

examples/vision/facedet/scrfd/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/ui/view/CameraSurfaceView.java

@@ -0,0 +1,349 @@
+package com.baidu.paddle.fastdeploy.app.ui.view;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.SurfaceTexture;
+import android.hardware.Camera;
+import android.hardware.Camera.CameraInfo;
+import android.hardware.Camera.Size;
+import android.opengl.GLES11Ext;
+import android.opengl.GLES20;
+import android.opengl.GLSurfaceView;
+import android.opengl.GLSurfaceView.Renderer;
+import android.opengl.GLUtils;
+import android.opengl.Matrix;
+import android.util.AttributeSet;
+import android.util.Log;
+
+import com.baidu.paddle.fastdeploy.app.ui.Utils;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+import java.util.List;
+
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
+
+public class CameraSurfaceView extends GLSurfaceView implements Renderer,
+        SurfaceTexture.OnFrameAvailableListener {
+    private static final String TAG = CameraSurfaceView.class.getSimpleName();
+
+    public static int EXPECTED_PREVIEW_WIDTH = 1280;  // 1920
+    public static int EXPECTED_PREVIEW_HEIGHT = 720;  // 960
+
+    protected int numberOfCameras;
+    protected int selectedCameraId;
+    protected boolean disableCamera = false;
+    protected Camera camera;
+
+    protected Context context;
+    protected SurfaceTexture surfaceTexture;
+    protected int surfaceWidth = 0;
+    protected int surfaceHeight = 0;
+    protected int textureWidth = 0;
+    protected int textureHeight = 0;
+
+    protected Bitmap ARGB8888ImageBitmap;
+    protected boolean bitmapReleaseMode = true;
+
+    // In order to manipulate the camera preview data and render the modified one
+    // to the screen, three textures are created and the data flow is shown as following:
+    // previewdata->camTextureId->fboTexureId->drawTexureId->framebuffer
+    protected int[] fbo = {0};
+    protected int[] camTextureId = {0};
+    protected int[] fboTexureId = {0};
+    protected int[] drawTexureId = {0};
+
+    private final String vss = ""
+            + "attribute vec2 vPosition;\n"
+            + "attribute vec2 vTexCoord;\n" + "varying vec2 texCoord;\n"
+            + "void main() {\n" + "  texCoord = vTexCoord;\n"
+            + "  gl_Position = vec4 (vPosition.x, vPosition.y, 0.0, 1.0);\n"
+            + "}";
+
+    private final String fssCam2FBO = ""
+            + "#extension GL_OES_EGL_image_external : require\n"
+            + "precision mediump float;\n"
+            + "uniform samplerExternalOES sTexture;\n"
+            + "varying vec2 texCoord;\n"
+            + "void main() {\n"
+            + "  gl_FragColor = texture2D(sTexture,texCoord);\n" + "}";
+
+    private final String fssTex2Screen = ""
+            + "precision mediump float;\n"
+            + "uniform sampler2D sTexture;\n"
+            + "varying vec2 texCoord;\n"
+            + "void main() {\n"
+            + "  gl_FragColor = texture2D(sTexture,texCoord);\n" + "}";
+
+    private final float[] vertexCoords = {
+            -1, -1,
+            -1, 1,
+            1, -1,
+            1, 1};
+    private float[] textureCoords = {
+            0, 1,
+            0, 0,
+            1, 1,
+            1, 0};
+
+    private FloatBuffer vertexCoordsBuffer;
+    private FloatBuffer textureCoordsBuffer;
+
+    private int progCam2FBO = -1;
+    private int progTex2Screen = -1;
+    private int vcCam2FBO;
+    private int tcCam2FBO;
+    private int vcTex2Screen;
+    private int tcTex2Screen;
+
+    public void setBitmapReleaseMode(boolean mode) {
+        synchronized (this) {
+            bitmapReleaseMode = mode;
+        }
+    }
+
+    public Bitmap getBitmap() {
+        return ARGB8888ImageBitmap; // may null or recycled.
+    }
+
+    public interface OnTextureChangedListener {
+        boolean onTextureChanged(Bitmap ARGB8888ImageBitmap);
+    }
+
+    private OnTextureChangedListener onTextureChangedListener = null;
+
+    public void setOnTextureChangedListener(OnTextureChangedListener listener) {
+        onTextureChangedListener = listener;
+    }
+
+    public CameraSurfaceView(Context ctx, AttributeSet attrs) {
+        super(ctx, attrs);
+        context = ctx;
+        setEGLContextClientVersion(2);
+        setRenderer(this);
+        setRenderMode(RENDERMODE_WHEN_DIRTY);
+
+        // Find the total number of available cameras and the ID of the default camera
+        numberOfCameras = Camera.getNumberOfCameras();
+        CameraInfo cameraInfo = new CameraInfo();
+        for (int i = 0; i < numberOfCameras; i++) {
+            Camera.getCameraInfo(i, cameraInfo);
+            if (cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK) {
+                selectedCameraId = i;
+            }
+        }
+    }
+
+    @Override
+    public void onSurfaceCreated(GL10 gl, EGLConfig config) {
+        // Create OES texture for storing camera preview data(YUV format)
+        GLES20.glGenTextures(1, camTextureId, 0);
+        GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, camTextureId[0]);
+        GLES20.glTexParameteri(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
+        GLES20.glTexParameteri(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
+        GLES20.glTexParameteri(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
+        GLES20.glTexParameteri(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);
+        surfaceTexture = new SurfaceTexture(camTextureId[0]);
+        surfaceTexture.setOnFrameAvailableListener(this);
+
+        // Prepare vertex and texture coordinates
+        int bytes = vertexCoords.length * Float.SIZE / Byte.SIZE;
+        vertexCoordsBuffer = ByteBuffer.allocateDirect(bytes).order(ByteOrder.nativeOrder()).asFloatBuffer();
+        textureCoordsBuffer = ByteBuffer.allocateDirect(bytes).order(ByteOrder.nativeOrder()).asFloatBuffer();
+        vertexCoordsBuffer.put(vertexCoords).position(0);
+        textureCoordsBuffer.put(textureCoords).position(0);
+
+        // Create vertex and fragment shaders
+        // camTextureId->fboTexureId
+        progCam2FBO = Utils.createShaderProgram(vss, fssCam2FBO);
+        vcCam2FBO = GLES20.glGetAttribLocation(progCam2FBO, "vPosition");
+        tcCam2FBO = GLES20.glGetAttribLocation(progCam2FBO, "vTexCoord");
+        GLES20.glEnableVertexAttribArray(vcCam2FBO);
+        GLES20.glEnableVertexAttribArray(tcCam2FBO);
+        // fboTexureId/drawTexureId -> screen
+        progTex2Screen = Utils.createShaderProgram(vss, fssTex2Screen);
+        vcTex2Screen = GLES20.glGetAttribLocation(progTex2Screen, "vPosition");
+        tcTex2Screen = GLES20.glGetAttribLocation(progTex2Screen, "vTexCoord");
+        GLES20.glEnableVertexAttribArray(vcTex2Screen);
+        GLES20.glEnableVertexAttribArray(tcTex2Screen);
+    }
+
+    @Override
+    public void onSurfaceChanged(GL10 gl, int width, int height) {
+        surfaceWidth = width;
+        surfaceHeight = height;
+        openCamera();
+    }
+
+    @Override
+    public void onDrawFrame(GL10 gl) {
+        if (surfaceTexture == null) return;
+
+        GLES20.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+        GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);
+        surfaceTexture.updateTexImage();
+        float[] matrix = new float[16];
+        surfaceTexture.getTransformMatrix(matrix);
+
+        // camTextureId->fboTexureId
+        GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, fbo[0]);
+        GLES20.glViewport(0, 0, textureWidth, textureHeight);
+        GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
+        GLES20.glUseProgram(progCam2FBO);
+        GLES20.glVertexAttribPointer(vcCam2FBO, 2, GLES20.GL_FLOAT, false, 4 * 2, vertexCoordsBuffer);
+        textureCoordsBuffer.clear();
+        textureCoordsBuffer.put(transformTextureCoordinates(textureCoords, matrix));
+        textureCoordsBuffer.position(0);
+        GLES20.glVertexAttribPointer(tcCam2FBO, 2, GLES20.GL_FLOAT, false, 4 * 2, textureCoordsBuffer);
+        GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
+        GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, camTextureId[0]);
+        GLES20.glUniform1i(GLES20.glGetUniformLocation(progCam2FBO, "sTexture"), 0);
+        GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
+        GLES20.glFlush();
+
+        // Check if the draw texture is set
+        int targetTexureId = fboTexureId[0];
+        if (onTextureChangedListener != null) {
+            // Read pixels of FBO to a bitmap
+            ByteBuffer pixelBuffer = ByteBuffer.allocate(textureWidth * textureHeight * 4);
+            GLES20.glReadPixels(0, 0, textureWidth, textureHeight, GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, pixelBuffer);
+
+            ARGB8888ImageBitmap = Bitmap.createBitmap(textureWidth, textureHeight, Bitmap.Config.ARGB_8888);
+            ARGB8888ImageBitmap.copyPixelsFromBuffer(pixelBuffer);
+
+            boolean modified = onTextureChangedListener.onTextureChanged(ARGB8888ImageBitmap);
+
+            if (modified) {
+                targetTexureId = drawTexureId[0];
+                // Update a bitmap to the GL texture if modified
+                GLES20.glActiveTexture(targetTexureId);
+                // GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, targetTexureId);
+                GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, targetTexureId);
+                GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, ARGB8888ImageBitmap, 0);
+            }
+            if (bitmapReleaseMode) {
+                ARGB8888ImageBitmap.recycle();
+            }
+        }
+
+        // fboTexureId/drawTexureId->Screen
+        GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
+        GLES20.glViewport(0, 0, surfaceWidth, surfaceHeight);
+        GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
+        GLES20.glUseProgram(progTex2Screen);
+        GLES20.glVertexAttribPointer(vcTex2Screen, 2, GLES20.GL_FLOAT, false, 4 * 2, vertexCoordsBuffer);
+        textureCoordsBuffer.clear();
+        textureCoordsBuffer.put(textureCoords);
+        textureCoordsBuffer.position(0);
+        GLES20.glVertexAttribPointer(tcTex2Screen, 2, GLES20.GL_FLOAT, false, 4 * 2, textureCoordsBuffer);
+        GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
+        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, targetTexureId);
+        GLES20.glUniform1i(GLES20.glGetUniformLocation(progTex2Screen, "sTexture"), 0);
+        GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
+        GLES20.glFlush();
+    }
+
+    private float[] transformTextureCoordinates(float[] coords, float[] matrix) {
+        float[] result = new float[coords.length];
+        float[] vt = new float[4];
+        for (int i = 0; i < coords.length; i += 2) {
+            float[] v = {coords[i], coords[i + 1], 0, 1};
+            Matrix.multiplyMV(vt, 0, matrix, 0, v, 0);
+            result[i] = vt[0];
+            result[i + 1] = vt[1];
+        }
+        return result;
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        releaseCamera();
+    }
+
+    @Override
+    public void onFrameAvailable(SurfaceTexture surfaceTexture) {
+        requestRender();
+    }
+
+    public void disableCamera() {
+        disableCamera = true;
+    }
+
+    public void switchCamera() {
+        releaseCamera();
+        selectedCameraId = (selectedCameraId + 1) % numberOfCameras;
+        openCamera();
+    }
+
+    public void openCamera() {
+        if (disableCamera) return;
+        camera = Camera.open(selectedCameraId);
+        List<Size> supportedPreviewSizes = camera.getParameters().getSupportedPreviewSizes();
+        Size previewSize = Utils.getOptimalPreviewSize(supportedPreviewSizes, EXPECTED_PREVIEW_WIDTH,
+                EXPECTED_PREVIEW_HEIGHT);
+        Camera.Parameters parameters = camera.getParameters();
+        parameters.setPreviewSize(previewSize.width, previewSize.height);
+        if (parameters.getSupportedFocusModes().contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
+            parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
+        }
+        camera.setParameters(parameters);
+        int degree = Utils.getCameraDisplayOrientation(context, selectedCameraId);
+        camera.setDisplayOrientation(degree);
+        boolean rotate = degree == 90 || degree == 270;
+        textureWidth = rotate ? previewSize.height : previewSize.width;
+        textureHeight = rotate ? previewSize.width : previewSize.height;
+
+        // Destroy FBO and draw textures
+        GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
+        GLES20.glDeleteFramebuffers(1, fbo, 0);
+        GLES20.glDeleteTextures(1, drawTexureId, 0);
+        GLES20.glDeleteTextures(1, fboTexureId, 0);
+        // Normal texture for storing modified camera preview data(RGBA format)
+        GLES20.glGenTextures(1, drawTexureId, 0);
+        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, drawTexureId[0]);
+        GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, textureWidth, textureHeight, 0,
+                GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, null);
+        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
+        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
+        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
+        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);
+        // FBO texture for storing camera preview data(RGBA format)
+        GLES20.glGenTextures(1, fboTexureId, 0);
+        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, fboTexureId[0]);
+        GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, textureWidth, textureHeight, 0,
+                GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, null);
+        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
+        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
+        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
+        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);
+        // Generate FBO and bind to FBO texture
+        GLES20.glGenFramebuffers(1, fbo, 0);
+        GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, fbo[0]);
+        GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D,
+                fboTexureId[0], 0);
+        try {
+            camera.setPreviewTexture(surfaceTexture);
+        } catch (IOException exception) {
+            Log.e(TAG, "IOException caused by setPreviewDisplay()", exception);
+        }
+        camera.startPreview();
+    }
+
+    public void releaseCamera() {
+        if (camera != null) {
+            camera.setPreviewCallback(null);
+            camera.stopPreview();
+            camera.release();
+            camera = null;
+        }
+    }
+}

examples/vision/facedet/scrfd/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/ui/view/ResultListView.java

@@ -0,0 +1,43 @@
+package com.baidu.paddle.fastdeploy.app.ui.view;
+
+import android.content.Context;
+import android.os.Handler;
+import android.util.AttributeSet;
+import android.widget.ListView;
+
+public class ResultListView extends ListView {
+    public ResultListView(Context context) {
+        super(context);
+    }
+
+    public ResultListView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public ResultListView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    private Handler handler;
+
+    public void setHandler(Handler mHandler) {
+        handler = mHandler;
+    }
+
+    public void clear() {
+        handler.post(new Runnable() {
+            @Override
+            public void run() {
+                removeAllViewsInLayout();
+                invalidate();
+            }
+        });
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
+                MeasureSpec.AT_MOST);
+        super.onMeasure(widthMeasureSpec, expandSpec);
+    }
+}

examples/vision/facedet/scrfd/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/ui/view/adapter/BaseResultAdapter.java

@@ -0,0 +1,48 @@
+package com.baidu.paddle.fastdeploy.app.ui.view.adapter;
+
+import android.content.Context;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.TextView;
+
+import com.baidu.paddle.fastdeploy.app.examples.R;
+import com.baidu.paddle.fastdeploy.app.ui.view.model.BaseResultModel;
+
+import java.text.DecimalFormat;
+import java.util.List;
+
+public class BaseResultAdapter extends ArrayAdapter<BaseResultModel> {
+    private int resourceId;
+
+    public BaseResultAdapter(@NonNull Context context, int resource) {
+        super(context, resource);
+    }
+
+    public BaseResultAdapter(@NonNull Context context, int resource, @NonNull List<BaseResultModel> objects) {
+        super(context, resource, objects);
+        resourceId = resource;
+    }
+
+    @NonNull
+    @Override
+    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
+        BaseResultModel model = getItem(position);
+        View view = LayoutInflater.from(getContext()).inflate(resourceId, null);
+        TextView indexText = (TextView) view.findViewById(R.id.index);
+        TextView nameText = (TextView) view.findViewById(R.id.name);
+        TextView confidenceText = (TextView) view.findViewById(R.id.confidence);
+        indexText.setText(String.valueOf(model.getIndex()));
+        nameText.setText(String.valueOf(model.getName()));
+        confidenceText.setText(formatFloatString(model.getConfidence()));
+        return view;
+    }
+
+    public static String formatFloatString(float number) {
+        DecimalFormat df = new DecimalFormat("0.00");
+        return df.format(number);
+    }
+}

examples/vision/facedet/scrfd/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/ui/view/model/BaseResultModel.java

@@ -0,0 +1,41 @@
+package com.baidu.paddle.fastdeploy.app.ui.view.model;
+
+public class BaseResultModel {
+    private int index;
+    private String name;
+    private float confidence;
+
+    public BaseResultModel() {
+
+    }
+
+    public BaseResultModel(int index, String name, float confidence) {
+        this.index = index;
+        this.name = name;
+        this.confidence = confidence;
+    }
+
+    public float getConfidence() {
+        return confidence;
+    }
+
+    public void setConfidence(float confidence) {
+        this.confidence = confidence;
+    }
+
+    public int getIndex() {
+        return index;
+    }
+
+    public void setIndex(int index) {
+        this.index = index;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/action_button_layer.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape>
+            <solid android:color="@color/textColorHighlight" />
+        </shape>
+    </item>
+    <!--这里的right和bottom表示的是这一层图片的右边距和下边距，当然还有left和top-->
+    <item android:bottom="5px">
+        <shape>
+            <solid android:color="@color/bk_black" />
+        </shape>
+    </item>
+</layer-list>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/album_btn.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_selected="true" android:drawable="@drawable/album" />
+    <item android:state_focused="true" android:drawable="@drawable/album" />
+    <item android:state_pressed="true" android:drawable="@drawable/album" />
+    <item android:drawable="@drawable/album_pressed" />
+</selector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillType="evenOdd"
+        android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="78.5885"
+                android:endY="90.9159"
+                android:startX="48.7653"
+                android:startY="61.0927"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/realtime_start_btn.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_selected="true" android:drawable="@drawable/realtime_start_pressed" />
+    <item android:state_focused="true" android:drawable="@drawable/realtime_start_pressed" />
+    <item android:state_pressed="true" android:drawable="@drawable/realtime_start_pressed" />
+    <item android:drawable="@drawable/realtime_start" />
+</selector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/realtime_stop_btn.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_selected="true" android:drawable="@drawable/realtime_stop_pressed" />
+    <item android:state_focused="true" android:drawable="@drawable/realtime_stop_pressed" />
+    <item android:state_pressed="true" android:drawable="@drawable/realtime_stop_pressed" />
+    <item android:drawable="@drawable/realtime_stop" />
+</selector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/result_page_border_section_bk.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape android:shape="rectangle">
+            <solid android:color="#FFFFFF" />
+
+            <stroke
+                android:width="1px"
+                android:color="#E5E5E5" />
+        </shape>
+    </item>
+</layer-list>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/round_corner_btn.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners
+        android:bottomLeftRadius="25dp"
+        android:bottomRightRadius="25dp"
+        android:topLeftRadius="25dp"
+        android:topRightRadius="25dp"></corners>
+    <solid android:color="#3B85F5"></solid>
+</shape>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/seekbar_progress_realtime.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!--定义seekbar滑动条的底色-->
+    <item android:id="@android:id/background">
+        <bitmap
+            android:src="@drawable/seekbar_progress_dotted"
+            android:tileMode="mirror"></bitmap>
+    </item>
+    <!--定义seekbar滑动条进度颜色-->
+    <item android:id="@android:id/progress">
+        <clip>
+            <shape>
+                <solid android:color="#F5A623" />
+            </shape>
+        </clip>
+    </item>
+</layer-list>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/seekbar_progress_result.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!--定义seekbar滑动条的底色-->
+    <item android:id="@android:id/background">
+        <shape>
+            <solid android:color="#E5E5E5" />
+        </shape>
+    </item>
+    <!--定义seekbar滑动条进度颜色-->
+    <item android:id="@android:id/progress">
+        <clip>
+            <shape>
+                <solid android:color="#3B85F5" />
+            </shape>
+        </clip>
+    </item>
+</layer-list>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/seekbar_thumb.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <selector>
+        <item android:state_focused="true" android:state_pressed="false" android:drawable="@drawable/seekbar_thumb_shape" />
+        <item android:state_focused="true" android:state_pressed="true" android:drawable="@drawable/seekbar_thumb_shape" />
+        <item android:state_focused="false" android:state_pressed="true" android:drawable="@drawable/seekbar_thumb_shape" />
+        <item android:drawable="@drawable/seekbar_thumb_shape" />
+    </selector>
+</selector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/seekbar_thumb_shape.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- 白色前景 -->
+    <item
+        android:gravity="center"
+        android:bottom="20px"
+        android:top="20px"
+        android:right="20px"
+        android:left="20px">
+        <shape android:shape="oval">
+            <size
+                android:width="20px"
+                android:height="20px" />
+            <solid android:color="#ffffffff" />
+        </shape>
+    </item>
+    <!-- 透明阴影 -->
+    <item android:gravity="center">
+        <shape android:shape="oval">
+            <size
+                android:height="30px"
+                android:width="30px" />
+            <solid android:color="#96ffffff" />
+        </shape>
+    </item>
+</layer-list>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/switch_side_btn.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_selected="true" android:drawable="@drawable/switch_side_pressed" />
+    <item android:state_focused="true" android:drawable="@drawable/switch_side_pressed" />
+    <item android:state_pressed="true" android:drawable="@drawable/switch_side_pressed" />
+    <item android:drawable="@drawable/switch_side" />
+</selector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable-v24/take_picture_btn.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_selected="true" android:drawable="@drawable/take_picture_pressed" />
+    <item android:state_focused="true" android:drawable="@drawable/take_picture_pressed" />
+    <item android:state_pressed="true" android:drawable="@drawable/take_picture_pressed" />
+    <item android:drawable="@drawable/take_picture" />
+</selector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable/btn_settings.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true" android:drawable="@drawable/btn_settings_pressed"/>
+    <item android:drawable="@drawable/btn_settings_default"/>
+</selector>
+

examples/vision/facedet/scrfd/android/app/src/main/res/drawable/btn_settings_default.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="evenOdd"
+        android:pathData="M10.4696,3.5L9.8539,5.2714C9.7605,5.5401 9.5784,5.7688 9.3375,5.9199L8.0854,6.7054C7.8421,6.8581 7.5537,6.9223 7.2686,6.8872L5.3518,6.6517L3.9124,9.0649L4.9862,10.3888C5.1668,10.6114 5.2654,10.8894 5.2654,11.1762L5.2654,12.9051C5.2654,13.2057 5.157,13.4963 4.9602,13.7235L3.9165,14.9283L5.3573,17.4236L7.264,17.1741C7.5472,17.137 7.8344,17.198 8.0781,17.3469L9.401,18.1555C9.655,18.3107 9.8452,18.5515 9.9375,18.8345L10.4806,20.5L13.5194,20.5L14.0625,18.8345C14.1548,18.5515 14.345,18.3107 14.599,18.1555L15.9219,17.3469C16.1656,17.198 16.4528,17.137 16.736,17.1741L18.6427,17.4236L20.0835,14.9283L19.0398,13.7235C18.843,13.4963 18.7346,13.2057 18.7346,12.9051L18.7346,11.1762C18.7346,10.8894 18.8332,10.6114 19.0138,10.3888L20.0876,9.0649L18.6482,6.6517L16.7314,6.8872C16.4463,6.9223 16.1579,6.8581 15.9146,6.7054L14.6629,5.9202C14.4221,5.7691 14.2399,5.5404 14.1466,5.2718L13.5305,3.5L10.4696,3.5ZM8.4659,4.696L9.1111,2.8396C9.2858,2.3369 9.7596,2 10.2918,2L13.7083,2C14.2404,2 14.7142,2.3369 14.8889,2.8395L15.5345,4.6962L16.6366,5.3876L18.6269,5.143C19.1184,5.0826 19.5993,5.318 19.8529,5.7433L21.4653,8.4465C21.7339,8.8968 21.6928,9.4669 21.3625,9.8742L20.2346,11.2648L20.2346,12.8118L21.3338,14.0807C21.6826,14.4833 21.7379,15.0628 21.4715,15.5241L19.8583,18.3182C19.6057,18.7557 19.1145,18.9982 18.6136,18.9326L16.6288,18.6728L15.46,19.3872L14.8893,21.1375C14.7216,21.6519 14.2419,22 13.7009,22L10.2991,22C9.7581,22 9.2784,21.6519 9.1107,21.1375L8.54,19.3872L7.3712,18.6728L5.3864,18.9326C4.8855,18.9982 4.3943,18.7557 4.1417,18.3182L2.5285,15.5241C2.2621,15.0628 2.3174,14.4833 2.6662,14.0807L3.7654,12.8118L3.7654,11.2648L2.6375,9.8742C2.3072,9.4669 2.2661,8.8968 2.5347,8.4465L4.1471,5.7433C4.4007,5.318 4.8816,5.0826 5.3731,5.143L7.3634,5.3876L8.4659,4.696ZM12,15.75C9.9289,15.75 8.25,14.0711 8.25,12C8.25,9.9289 9.9289,8.25 12,8.25C14.0711,8.25 15.75,9.9289 15.75,12C15.75,14.0711 14.0711,15.75 12,15.75ZM12,14.75C13.5188,14.75 14.75,13.5188 14.75,12C14.75,10.4812 13.5188,9.25 12,9.25C10.4812,9.25 9.25,10.4812 9.25,12C9.25,13.5188 10.4812,14.75 12,14.75Z"
+        android:strokeWidth="0"
+        android:strokeColor="#00000000" />
+</vector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable/btn_settings_pressed.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#bcbcbc"
+        android:fillType="evenOdd"
+        android:pathData="M10.4696,3.5L9.8539,5.2714C9.7605,5.5401 9.5784,5.7688 9.3375,5.9199L8.0854,6.7054C7.8421,6.8581 7.5537,6.9223 7.2686,6.8872L5.3518,6.6517L3.9124,9.0649L4.9862,10.3888C5.1668,10.6114 5.2654,10.8894 5.2654,11.1762L5.2654,12.9051C5.2654,13.2057 5.157,13.4963 4.9602,13.7235L3.9165,14.9283L5.3573,17.4236L7.264,17.1741C7.5472,17.137 7.8344,17.198 8.0781,17.3469L9.401,18.1555C9.655,18.3107 9.8452,18.5515 9.9375,18.8345L10.4806,20.5L13.5194,20.5L14.0625,18.8345C14.1548,18.5515 14.345,18.3107 14.599,18.1555L15.9219,17.3469C16.1656,17.198 16.4528,17.137 16.736,17.1741L18.6427,17.4236L20.0835,14.9283L19.0398,13.7235C18.843,13.4963 18.7346,13.2057 18.7346,12.9051L18.7346,11.1762C18.7346,10.8894 18.8332,10.6114 19.0138,10.3888L20.0876,9.0649L18.6482,6.6517L16.7314,6.8872C16.4463,6.9223 16.1579,6.8581 15.9146,6.7054L14.6629,5.9202C14.4221,5.7691 14.2399,5.5404 14.1466,5.2718L13.5305,3.5L10.4696,3.5ZM8.4659,4.696L9.1111,2.8396C9.2858,2.3369 9.7596,2 10.2918,2L13.7083,2C14.2404,2 14.7142,2.3369 14.8889,2.8395L15.5345,4.6962L16.6366,5.3876L18.6269,5.143C19.1184,5.0826 19.5993,5.318 19.8529,5.7433L21.4653,8.4465C21.7339,8.8968 21.6928,9.4669 21.3625,9.8742L20.2346,11.2648L20.2346,12.8118L21.3338,14.0807C21.6826,14.4833 21.7379,15.0628 21.4715,15.5241L19.8583,18.3182C19.6057,18.7557 19.1145,18.9982 18.6136,18.9326L16.6288,18.6728L15.46,19.3872L14.8893,21.1375C14.7216,21.6519 14.2419,22 13.7009,22L10.2991,22C9.7581,22 9.2784,21.6519 9.1107,21.1375L8.54,19.3872L7.3712,18.6728L5.3864,18.9326C4.8855,18.9982 4.3943,18.7557 4.1417,18.3182L2.5285,15.5241C2.2621,15.0628 2.3174,14.4833 2.6662,14.0807L3.7654,12.8118L3.7654,11.2648L2.6375,9.8742C2.3072,9.4669 2.2661,8.8968 2.5347,8.4465L4.1471,5.7433C4.4007,5.318 4.8816,5.0826 5.3731,5.143L7.3634,5.3876L8.4659,4.696ZM12,15.75C9.9289,15.75 8.25,14.0711 8.25,12C8.25,9.9289 9.9289,8.25 12,8.25C14.0711,8.25 15.75,9.9289 15.75,12C15.75,14.0711 14.0711,15.75 12,15.75ZM12,14.75C13.5188,14.75 14.75,13.5188 14.75,12C14.75,10.4812 13.5188,9.25 12,9.25C10.4812,9.25 9.25,10.4812 9.25,12C9.25,13.5188 10.4812,14.75 12,14.75Z"
+        android:strokeWidth="0"
+        android:strokeColor="#00000000" />
+</vector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable/btn_shutter.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true" android:drawable="@drawable/btn_shutter_pressed"/>
+    <item android:drawable="@drawable/btn_shutter_default"/>
+</selector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable/btn_shutter_default.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:height="201dp"
+        android:width="201dp"
+        android:viewportWidth="201"
+        android:viewportHeight="201">
+    <path
+            android:fillColor="#ffffff"
+            android:pathData="M 100.5 0 C 156.004617358 0 201 44.995382642 201 100.5 C 201 156.004617358 156.004617358 201 100.5 201 C 44.995382642 201 0 156.004617358 0 100.5 C 0 44.995382642 44.995382642 0 100.5 0 Z"
+            android:strokeWidth="1"
+            android:fillType="evenOdd"/>
+    <path
+            android:fillColor="#dfe7eb"
+            android:pathData="M 100.5 17.2285714 C 146.489540112 17.2285714 183.7714286 54.5104598876 183.7714286 100.5 C 183.7714286 146.489540112 146.489540112 183.7714286 100.5 183.7714286 C 54.5104598876 183.7714286 17.2285714 146.489540112 17.2285714 100.5 C 17.2285714 54.5104598876 54.5104598876 17.2285714 100.5 17.2285714 Z"
+            android:strokeWidth="1"
+            android:fillType="evenOdd"/>
+</vector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable/btn_shutter_pressed.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:height="201dp"
+        android:width="201dp"
+        android:viewportWidth="201"
+        android:viewportHeight="201">
+    <path
+            android:fillColor="#ffffff"
+            android:pathData="M 100.5 0 C 156.004617358 0 201 44.995382642 201 100.5 C 201 156.004617358 156.004617358 201 100.5 201 C 44.995382642 201 0 156.004617358 0 100.5 C 0 44.995382642 44.995382642 0 100.5 0 Z"
+            android:strokeWidth="1"
+            android:fillType="evenOdd"/>
+    <path
+            android:fillColor="#cfd7db"
+            android:pathData="M 100.5 17.2285714 C 146.489540112 17.2285714 183.7714286 54.5104598876 183.7714286 100.5 C 183.7714286 146.489540112 146.489540112 183.7714286 100.5 183.7714286 C 54.5104598876 183.7714286 17.2285714 146.489540112 17.2285714 100.5 C 17.2285714 54.5104598876 54.5104598876 17.2285714 100.5 17.2285714 Z"
+            android:strokeWidth="1"
+            android:fillType="evenOdd"/>
+</vector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable/btn_switch.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true" android:drawable="@drawable/btn_switch_pressed"/>
+    <item android:drawable="@drawable/btn_switch_default"/>
+</selector>

examples/vision/facedet/scrfd/android/app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#008577"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

examples/vision/facedet/scrfd/android/app/src/main/res/layout/facedet_activity_main.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <include
+        layout="@layout/facedet_camera_page"
+        android:id="@+id/camera_page"></include>
+
+    <include
+        layout="@layout/facedet_result_page"
+        android:id="@+id/result_page"
+        android:visibility="gone"></include>
+</FrameLayout>

examples/vision/facedet/scrfd/android/app/src/main/res/layout/facedet_camera_page.xml

@@ -0,0 +1,159 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:keepScreenOn="true"
+    tools:context=".facedet.FaceDetMainActivity">
+
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/colorWindow">
+
+        <com.baidu.paddle.fastdeploy.app.ui.layout.ActionBarLayout
+            android:id="@+id/action_bar_main"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+
+        <ImageView
+            android:id="@+id/back_in_preview"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:cropToPadding="true"
+            android:paddingLeft="40px"
+            android:paddingTop="60px"
+            android:paddingRight="60px"
+            android:paddingBottom="40px"
+            android:src="@drawable/back_btn" />
+
+        <LinearLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_centerHorizontal="true"
+            android:layout_marginTop="50px"
+            android:orientation="horizontal">
+
+            <TextView
+                android:id="@+id/action_takepicture_btn"
+                style="@style/action_btn_selected"
+                android:layout_width="300px"
+                android:layout_height="wrap_content"
+                android:text="@string/action_bar_take_photo"
+                android:textAlignment="center"
+                android:visibility="gone" />
+
+            <TextView
+                android:id="@+id/action_realtime_btn"
+                style="@style/action_btn"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/action_bar_realtime"
+                android:textAlignment="center" />
+        </LinearLayout>
+
+        <com.baidu.paddle.fastdeploy.app.ui.view.CameraSurfaceView
+            android:id="@+id/sv_preview"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_above="@+id/contral"
+            android:layout_below="@+id/action_bar_main"
+            android:layout_centerInParent="true" />
+
+        <ImageView
+            android:id="@+id/album_select"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:layout_alignParentRight="true"
+            android:layout_alignParentBottom="true"
+            android:layout_marginRight="20dp"
+            android:layout_marginBottom="145dp"
+            android:background="@drawable/album_btn"
+            android:scaleType="fitXY" />
+
+        <TextView
+            android:id="@+id/tv_status"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_alignParentRight="true"
+            android:layout_marginTop="60dp"
+            android:layout_marginRight="30dp"
+            android:textColor="@color/colorText"
+            android:textSize="@dimen/small_font_size" />
+
+        <RelativeLayout
+            android:layout_width="match_parent"
+            android:layout_height="@dimen/top_bar_height"
+            android:layout_alignParentTop="true"
+            android:background="@color/colorTopBar">
+
+            <ImageButton
+                android:id="@+id/btn_settings"
+                android:layout_width="30dp"
+                android:layout_height="30dp"
+                android:layout_alignParentRight="true"
+                android:layout_centerVertical="true"
+                android:layout_marginRight="10dp"
+                android:background="@null"
+                android:scaleType="fitXY"
+                android:src="@drawable/btn_settings" />
+
+        </RelativeLayout>
+
+        <LinearLayout
+            android:id="@+id/contral"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_alignParentBottom="true"
+            android:background="@color/colorBottomBar"
+            android:orientation="vertical">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="@dimen/bottom_bar_top_margin"
+                android:orientation="vertical"></LinearLayout>
+
+            <RelativeLayout
+                android:layout_width="match_parent"
+                android:layout_height="@dimen/large_button_height">
+
+                <ImageButton
+                    android:id="@+id/btn_switch"
+                    android:layout_width="60dp"
+                    android:layout_height="60dp"
+                    android:layout_alignParentLeft="true"
+                    android:layout_centerVertical="true"
+                    android:layout_marginLeft="60dp"
+                    android:background="#00000000"
+                    android:scaleType="fitXY"
+                    android:src="@drawable/switch_side_btn" />
+
+                <ImageButton
+                    android:id="@+id/btn_shutter"
+                    android:layout_width="@dimen/large_button_width"
+                    android:layout_height="@dimen/large_button_height"
+                    android:layout_centerInParent="true"
+                    android:background="@null"
+                    android:scaleType="fitXY"
+                    android:src="@drawable/take_picture_btn" />
+
+                <ImageView
+                    android:id="@+id/realtime_toggle_btn"
+                    android:layout_width="60dp"
+                    android:layout_height="60dp"
+                    android:layout_alignParentRight="true"
+                    android:layout_centerVertical="true"
+                    android:layout_marginRight="60dp"
+                    android:scaleType="fitXY"
+                    android:src="@drawable/realtime_stop_btn" />
+
+            </RelativeLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="@dimen/bottom_bar_bottom_margin"
+                android:orientation="vertical"></LinearLayout>
+        </LinearLayout>
+    </RelativeLayout>
+</android.support.constraint.ConstraintLayout>

examples/vision/facedet/scrfd/android/app/src/main/res/layout/facedet_result_page.xml

@@ -0,0 +1,160 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="#FFFFFF"
+        android:orientation="vertical">
+
+        <com.baidu.paddle.fastdeploy.app.ui.layout.ActionBarLayout
+            android:id="@+id/action_bar_result"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <ImageView
+                android:id="@+id/back_in_result"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:cropToPadding="true"
+                android:paddingLeft="40px"
+                android:paddingTop="60px"
+                android:paddingRight="60px"
+                android:paddingBottom="40px"
+                android:src="@drawable/back_btn" />
+
+            <TextView
+                android:id="@+id/model_name"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerHorizontal="true"
+                android:layout_marginTop="50px"
+                android:textColor="@color/textColor"
+                android:textSize="@dimen/action_btn_text_size" />
+        </com.baidu.paddle.fastdeploy.app.ui.layout.ActionBarLayout>
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="700px">
+
+            <ImageView
+                android:id="@+id/result_image"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:background="@color/bk_result_image_padding" />
+
+        </FrameLayout>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="40px"
+            android:layout_marginTop="26px"
+            android:layout_marginBottom="20px"
+            android:text="@string/result_label"
+            android:textColor="@color/bk_black"
+            android:textSize="56px"
+            android:visibility="visible" />
+
+        <LinearLayout
+            android:id="@+id/result_seekbar_section"
+            android:layout_width="match_parent"
+            android:layout_height="130px"
+            android:layout_marginLeft="@dimen/result_list_padding_lr"
+            android:layout_marginRight="@dimen/result_list_padding_lr"
+            android:layout_marginBottom="@dimen/result_list_gap_width"
+            android:background="@drawable/result_page_border_section_bk"
+            android:visibility="visible">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:layout_weight="2"
+                android:paddingLeft="30px"
+                android:text="@string/result_table_header_confidence"
+                android:textColor="@color/table_result_tableheader_text_color"
+                android:textSize="@dimen/result_list_view_text_size" />
+
+            <SeekBar
+                android:id="@+id/confidence_seekbar"
+                android:layout_width="220dp"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:layout_weight="6"
+                android:focusable="false"
+                android:maxHeight="8px"
+                android:progressDrawable="@drawable/seekbar_progress_result"
+                android:splitTrack="false"
+                android:thumb="@drawable/seekbar_handle" />
+
+            <TextView
+                android:id="@+id/seekbar_text"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:layout_weight="1"
+                android:paddingRight="30px"
+                android:textSize="@dimen/result_list_view_text_size"
+
+                />
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="@dimen/result_list_padding_lr"
+            android:layout_marginRight="@dimen/result_list_padding_lr"
+            android:layout_marginBottom="@dimen/result_list_gap_width"
+            android:background="@drawable/result_page_border_section_bk"
+            android:visibility="visible">
+
+            <TextView
+                style="@style/list_result_view_tablehead_style"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/result_table_header_index"
+                android:textColor="@color/table_result_tableheader_text_color" />
+
+            <TextView
+                style="@style/list_result_view_tablehead_style"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/result_table_header_name"
+                android:textColor="@color/table_result_tableheader_text_color" />
+
+            <TextView
+                style="@style/list_result_view_tablehead_style"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="0.4"
+                android:gravity="right"
+                android:text="@string/result_table_header_confidence"
+                android:textColor="@color/table_result_tableheader_text_color" />
+        </LinearLayout>
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <ScrollView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginBottom="15px"
+                android:paddingLeft="@dimen/result_list_padding_lr"
+                android:paddingRight="@dimen/result_list_padding_lr">
+
+                <com.baidu.paddle.fastdeploy.app.ui.view.ResultListView
+                    android:id="@+id/result_list_view"
+                    android:layout_width="match_parent"
+                    android:layout_height="700px"
+                    android:divider="#FFFFFF"
+                    android:dividerHeight="@dimen/result_list_gap_width"></com.baidu.paddle.fastdeploy.app.ui.view.ResultListView>
+            </ScrollView>
+
+        </FrameLayout>
+    </LinearLayout>
+</FrameLayout>

examples/vision/facedet/scrfd/android/app/src/main/res/layout/facedet_result_page_item.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="horizontal"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="@drawable/result_page_border_section_bk">
+
+    <TextView
+        android:id="@+id/index"
+        style="@style/list_result_view_item_style"
+        android:layout_width="wrap_content"
+        android:layout_weight="0.2" />
+
+    <TextView
+        android:id="@+id/name"
+        style="@style/list_result_view_item_style"
+        android:layout_width="wrap_content"
+        android:layout_weight="0.6"
+        android:maxWidth="300px" />
+
+    <TextView
+        android:id="@+id/confidence"
+        style="@style/list_result_view_item_style"
+        android:layout_weight="0.2"
+        android:layout_width="wrap_content" />
+</LinearLayout>

examples/vision/facedet/scrfd/android/app/src/main/res/values/arrays.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string-array name="cpu_thread_num_entries">
+        <item>1 threads</item>
+        <item>2 threads</item>
+        <item>4 threads</item>
+        <item>8 threads</item>
+    </string-array>
+    <string-array name="cpu_thread_num_values">
+        <item>1</item>
+        <item>2</item>
+        <item>4</item>
+        <item>8</item>
+    </string-array>
+    <string-array name="cpu_power_mode_entries">
+        <item>HIGH(only big cores)</item>
+        <item>LOW(only LITTLE cores)</item>
+        <item>FULL(all cores)</item>
+        <item>NO_BIND(depends on system)</item>
+        <item>RAND_HIGH</item>
+        <item>RAND_LOW</item>
+    </string-array>
+    <string-array name="cpu_power_mode_values">
+        <item>LITE_POWER_HIGH</item>
+        <item>LITE_POWER_LOW</item>
+        <item>LITE_POWER_FULL</item>
+        <item>LITE_POWER_NO_BIND</item>
+        <item>LITE_POWER_RAND_HIGH</item>
+        <item>LITE_POWER_RAND_LOW</item>
+    </string-array>
+    <string-array name="enable_lite_fp16_mode_entries">
+        <item>true</item>
+        <item>false</item>
+    </string-array>
+    <string-array name="enable_lite_fp16_mode_values">
+        <item>true</item>
+        <item>false</item>
+    </string-array>
+</resources>

examples/vision/facedet/scrfd/android/app/src/main/res/values/colors.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#008577</color>
+    <color name="colorPrimaryDark">#00574B</color>
+    <color name="colorAccent">#D81B60</color>
+    <color name="colorWindow">#FF000000</color>
+    <color name="colorTopBar">#00000000</color>
+    <color name="colorBottomBar">#00000000</color>
+    <color name="colorText">#FFFFFFFF</color>
+
+    <color name="bk_black">#000000</color>
+    <color name="bk_blue">#3B85F5</color>
+    <color name="textColorHighlight">#F5A623</color>
+    <color name="textColor">#FFFFFF</color>
+
+    <color name="bk_result_image_padding">#EEEEEE</color>
+
+    <color name="table_result_item_text_color">#3B85F5</color>
+    <color name="table_result_tableheader_text_color">#333333</color>
+    <color name="result_section_border_color">#E5E5E5</color>
+    <color name="result_popview_tablebody_bk">#3b85f5</color>
+</resources>

examples/vision/facedet/scrfd/android/app/src/main/res/values/dimens.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <dimen name="bottom_bar_top_margin">26dp</dimen>
+    <dimen name="bottom_bar_bottom_margin">36dp</dimen>
+    <dimen name="bottom_bar_left_right_margin">34dp</dimen>
+    <dimen name="top_bar_height">60dp</dimen>
+    <dimen name="top_bar_left_right_margin">16dp</dimen>
+    <dimen name="large_button_width">67dp</dimen>
+    <dimen name="large_button_height">67dp</dimen>
+    <dimen name="medium_button_width">56dp</dimen>
+    <dimen name="medium_button_height">56dp</dimen>
+    <dimen name="small_button_width">46dp</dimen>
+    <dimen name="small_button_height">46dp</dimen>
+    <dimen name="large_font_size">32dp</dimen>
+    <dimen name="medium_font_size">24dp</dimen>
+    <dimen name="small_font_size">16dp</dimen>
+</resources>

examples/vision/facedet/scrfd/android/app/src/main/res/values/strings.xml

@@ -0,0 +1,51 @@
+<resources>
+    <!-- Default App name -->
+    <string name="app_name">EasyEdge</string>
+    <!-- Other App name -->
+    <string name="detection_app_name">EasyEdge</string>
+    <string name="ocr_app_name">EasyEdge</string>
+    <string name="classification_app_name">EasyEdge</string>
+    <string name="facedet_app_name">EasyEdge</string>
+    <string name="segmentation_app_name">EasyEdge</string>
+    <!-- Keys for PreferenceScreen -->
+    <string name="CHOOSE_PRE_INSTALLED_MODEL_KEY">CHOOSE_INSTALLED_MODEL_KEY</string>
+    <string name="MODEL_DIR_KEY">MODEL_DIR_KEY</string>
+    <string name="LABEL_PATH_KEY">LABEL_PATH_KEY</string>
+    <string name="CPU_THREAD_NUM_KEY">CPU_THREAD_NUM_KEY</string>
+    <string name="CPU_POWER_MODE_KEY">CPU_POWER_MODE_KEY</string>
+    <string name="SCORE_THRESHOLD_KEY">SCORE_THRESHOLD_KEY</string>
+    <string name="ENABLE_LITE_FP16_MODE_KEY">ENABLE_LITE_FP16_MODE_KEY</string>
+    <!-- Common default values ... -->
+    <string name="CPU_THREAD_NUM_DEFAULT">2</string>
+    <string name="CPU_POWER_MODE_DEFAULT">LITE_POWER_HIGH</string>
+    <string name="SCORE_THRESHOLD_DEFAULT">0.4</string>
+    <string name="SCORE_THRESHOLD_CLASSIFICATION">0.1</string>
+    <string name="SCORE_THRESHOLD_FACEDET">0.25</string>
+    <string name="ENABLE_LITE_FP16_MODE_DEFAULT">true</string>
+    <!--Other values-->
+    <!-- Detection model & Label paths & other values ... -->
+    <string name="DETECTION_MODEL_DIR_DEFAULT">models/picodet_s_320_coco_lcnet</string>
+    <string name="DETECTION_LABEL_PATH_DEFAULT">labels/coco_label_list.txt</string>
+    <!-- PP-OCRv2 & PP-OCRv3 values ... -->
+    <string name="OCR_MODEL_DIR_DEFAULT">models</string>
+    <string name="OCR_REC_LABEL_DEFAULT">labels/ppocr_keys_v1.txt</string>
+    <!-- classification values ... -->
+    <string name="CLASSIFICATION_MODEL_DIR_DEFAULT">models/MobileNetV1_x0_25_infer</string>
+    <string name="CLASSIFICATION_LABEL_PATH_DEFAULT">labels/imagenet1k_label_list.txt</string>
+    <!-- facedet values ... -->
+    <string name="FACEDET_MODEL_DIR_DEFAULT">models/scrfd_500m_bnkps_shape320x320_pd</string>
+    <!-- segmentation values ... -->
+    <string name="SEGMENTATION_MODEL_DIR_DEFAULT">models/portrait_pp_humansegv2_lite_256x144_inference_model</string>
+    <!-- Other resources values-->
+    <string name="action_bar_take_photo">拍照识别</string>
+    <string name="action_bar_realtime">实时识别</string>
+    <string name="action_bar_back">&lt;</string>
+    <string name="action_bar_model_name">模型名称</string>
+    <string name="result_label">识别结果</string>
+    <string name="result_table_header_index">序号</string>
+    <string name="result_table_header_name">名称</string>
+    <string name="result_table_header_confidence">置信度</string>
+    <string name="operation_confidence_control">阈值控制</string>
+    <string name="operation_retry">重新识别</string>
+    <string name="operation_save">保存结果</string>
+</resources>

examples/vision/facedet/scrfd/android/app/src/main/res/values/styles.xml

@@ -0,0 +1,70 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+        <item name="actionOverflowMenuStyle">@style/OverflowMenuStyle</item>
+    </style>
+
+    <style name="OverflowMenuStyle" parent="Widget.AppCompat.Light.PopupMenu.Overflow">
+        <item name="overlapAnchor">false</item>
+    </style>
+
+    <style name="AppTheme.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+
+    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"/>
+
+    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light"/>
+
+    <style name="list_result_view_item_style">
+        <item name="android:textColor">@color/table_result_item_text_color</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:layout_weight">1</item>
+        <item name="android:gravity">left</item>
+        <item name="android:padding">30px</item>
+    </style>
+
+    <style name="list_result_popview_item_style">
+        <item name="android:textColor">@color/textColor</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:gravity">left</item>
+        <item name="android:padding">15px</item>
+        <item name="android:background">@color/result_popview_tablebody_bk</item>
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:alpha">0.5</item>
+    </style>
+
+    <style name="list_result_view_tablehead_style">
+        <item name="android:textColor">@color/table_result_item_text_color</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:layout_weight">1</item>
+        <item name="android:gravity">left</item>
+        <item name="android:padding">15px</item>
+    </style>
+
+    <style name="list_result_popview_tablehead_style">
+        <item name="android:textColor">@color/textColor</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:layout_weight">1</item>
+        <item name="android:gravity">left</item>
+        <item name="android:padding">20px</item>
+    </style>
+
+    <style name="action_btn">
+        <item name="android:textColor">@color/textColor</item>
+        <item name="android:background">@color/bk_black</item>
+    </style>
+
+    <style name="action_btn_selected">
+        <item name="android:textColor">@color/textColorHighlight</item>
+        <item name="android:background">@color/bk_black</item>
+    </style>
+
+
+</resources>

examples/vision/facedet/scrfd/android/app/src/main/res/values/values.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <dimen name="action_btn_size">120dp</dimen>
+    <dimen name="action_btn_text_size">46px</dimen>
+
+    <dimen name="operation_btn_margin_top_take_picture">126px</dimen>
+    <dimen name="operation_btn_margin_top">136px</dimen>
+
+    <dimen name="result_list_view_text_size">46px</dimen>
+
+    <dimen name="result_list_popview_text_size">36px</dimen>
+
+    <dimen name="result_list_padding_lr">15dp</dimen>
+
+    <dimen name="result_list_gap_width">15dp</dimen>
+
+</resources>

examples/vision/facedet/scrfd/android/app/src/main/res/xml/facedet_setting.xml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+    <ListPreference
+        android:defaultValue="@string/FACEDET_MODEL_DIR_DEFAULT"
+        android:key="@string/CHOOSE_PRE_INSTALLED_MODEL_KEY"
+        android:negativeButtonText="@null"
+        android:positiveButtonText="@null"
+        android:title="Choose Pre-Installed Models" />
+    <EditTextPreference
+        android:defaultValue="@string/FACEDET_MODEL_DIR_DEFAULT"
+        android:key="@string/MODEL_DIR_KEY"
+        android:title="Model Dir" />
+    <ListPreference
+        android:defaultValue="@string/CPU_THREAD_NUM_DEFAULT"
+        android:entries="@array/cpu_thread_num_entries"
+        android:entryValues="@array/cpu_thread_num_values"
+        android:key="@string/CPU_THREAD_NUM_KEY"
+        android:negativeButtonText="@null"
+        android:positiveButtonText="@null"
+        android:title="CPU Thread Num" />
+    <ListPreference
+        android:defaultValue="@string/CPU_POWER_MODE_DEFAULT"
+        android:entries="@array/cpu_power_mode_entries"
+        android:entryValues="@array/cpu_power_mode_values"
+        android:key="@string/CPU_POWER_MODE_KEY"
+        android:negativeButtonText="@null"
+        android:positiveButtonText="@null"
+        android:title="CPU Power Mode" />
+    <EditTextPreference
+        android:key="@string/SCORE_THRESHOLD_KEY"
+        android:defaultValue="@string/SCORE_THRESHOLD_DEFAULT"
+        android:title="Score Threshold: (0.0, 1.0)" />
+    <ListPreference
+        android:defaultValue="@string/ENABLE_LITE_FP16_MODE_DEFAULT"
+        android:entries="@array/enable_lite_fp16_mode_entries"
+        android:entryValues="@array/enable_lite_fp16_mode_values"
+        android:key="@string/ENABLE_LITE_FP16_MODE_KEY"
+        android:negativeButtonText="@null"
+        android:positiveButtonText="@null"
+        android:title="Enable Lite FP16" />
+</PreferenceScreen>

examples/vision/facedet/scrfd/android/build.gradle

@@ -0,0 +1,37 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+//plugins {
+//    id 'com.android.application' version '7.2.2' apply false
+//    id 'com.android.library' version '7.2.2' apply false
+//}
+//
+//task clean(type: Delete) {
+//    delete rootProject.buildDir
+//}
+
+buildscript {
+    repositories {
+        google()
+        jcenter()
+        // mavenCentral()
+
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:7.2.2'
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+        // mavenCentral()
+
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

examples/vision/facedet/scrfd/android/gradle.properties

@@ -0,0 +1,13 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx3096m
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true

examples/vision/facedet/scrfd/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Sat Oct 08 17:24:34 CST 2022
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME

examples/vision/facedet/scrfd/android/gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

examples/vision/facedet/scrfd/android/gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

examples/vision/facedet/scrfd/android/local.properties

@@ -0,0 +1,8 @@
+## This file must *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+#
+# Location of the SDK. This is only used by Gradle.
+# For customization when using a Version Control System, please read the
+# header note.
+#Thu Oct 20 16:50:08 CST 2022
+sdk.dir=/Users/qiuyanjun/Library/Android/sdk

examples/vision/facedet/scrfd/android/settings.gradle

@@ -0,0 +1 @@
+include ':app'

examples/vision/segmentation/paddleseg/android/README.md

@@ -1,6 +1,6 @@
 # 目标检测 PaddleSeg Android Demo 使用文档  
 
-在 Android 上实现实时的目标检测功能，此 Demo 有很好的的易用性和开放性，如在 Demo 中跑自己训练好的模型等。
+在 Android 上实现实时的人像分割功能，此 Demo 有很好的的易用性和开放性，如在 Demo 中跑自己训练好的模型等。
 
 ## 环境准备
 
@@ -23,9 +23,10 @@
 4. 点击 Run 按钮，自动编译 APP 并安装到手机。(该过程会自动下载预编译的 FastDeploy Android 库 以及 模型文件，需要联网)
 成功后效果如下，图一：APP 安装到手机；图二： APP 打开后的效果，会自动识别图片中的人物并绘制mask；图三：APP设置选项，点击右上角的设置图片，可以设置不同选项进行体验。
 
- | APP 图标 | APP 效果 | APP设置项
+| APP 图标 | APP 效果 | APP设置项
   | ---     | --- | --- |
-  | ![app_pic](https://user-images.githubusercontent.com/31974251/203268599-c94018d8-3683-490a-a5c7-a8136a4fa284.jpg)   | <img width="1200" height="600" alt="image" src="https://user-images.githubusercontent.com/31974251/203507683-bc990cf5-393e-4e0d-bd6b-0f114235d320.png"> |  ![app_setup](https://user-images.githubusercontent.com/31974251/197332983-afbfa6d5-4a3b-4c54-a528-4a3e58441be1.jpg) |  
+  | <img width="300" height="500" alt="image" src="https://user-images.githubusercontent.com/31974251/203268599-c94018d8-3683-490a-a5c7-a8136a4fa284.jpg">  | <img width="300" height="500" alt="image" src="https://user-images.githubusercontent.com/31974251/203267867-7c51b695-65e6-402e-9826-5d6d5864da87.gif"> | <img width="300" height="500" alt="image" src="https://user-images.githubusercontent.com/31974251/197332983-afbfa6d5-4a3b-4c54-a528-4a3e58441be1.jpg"> |  
+
 
 ## PaddleSegModel Java API 说明  
 - 模型初始化 API: 模型初始化API包含两种方式，方式一是通过构造函数直接初始化；方式二是，通过调用init函数，在合适的程序节点进行初始化。PaddleSegModel初始化参数说明如下：  

examples/vision/segmentation/paddleseg/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/ui/view/CameraSurfaceView.java

@@ -287,27 +287,20 @@ public class CameraSurfaceView extends GLSurfaceView implements Renderer,
     public void openCamera() {
         if (disableCamera) return;
         camera = Camera.open(selectedCameraId);
-        Camera.Parameters parameters = camera.getParameters();
-        int degree = Utils.getCameraDisplayOrientation(context, selectedCameraId);
-        camera.setDisplayOrientation(degree);
-        boolean rotate = degree == 90 || degree == 270;
-        int adjusted_width = rotate ? EXPECTED_PREVIEW_HEIGHT : EXPECTED_PREVIEW_WIDTH;
-        int adjusted_height = rotate ? EXPECTED_PREVIEW_WIDTH : EXPECTED_PREVIEW_HEIGHT;
-
         List<Size> supportedPreviewSizes = camera.getParameters().getSupportedPreviewSizes();
-
+        Size previewSize = Utils.getOptimalPreviewSize(supportedPreviewSizes, EXPECTED_PREVIEW_WIDTH,
-        Size previewSize = Utils.getOptimalPreviewSize(
+                EXPECTED_PREVIEW_HEIGHT);
-                supportedPreviewSizes, adjusted_width, adjusted_height);
+        Camera.Parameters parameters = camera.getParameters();
-
-        textureWidth = previewSize.width;
-        textureHeight = previewSize.height;
-
         parameters.setPreviewSize(previewSize.width, previewSize.height);
-        camera.setParameters(parameters);
-
         if (parameters.getSupportedFocusModes().contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
             parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
         }
+        camera.setParameters(parameters);
+        int degree = Utils.getCameraDisplayOrientation(context, selectedCameraId);
+        camera.setDisplayOrientation(degree);
+        boolean rotate = degree == 90 || degree == 270;
+        textureWidth = rotate ? previewSize.height : previewSize.width;
+        textureHeight = rotate ? previewSize.width : previewSize.height;
 
         // Destroy FBO and draw textures
         GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);

java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/ui/view/CameraSurfaceView.java

@@ -287,27 +287,20 @@ public class CameraSurfaceView extends GLSurfaceView implements Renderer,
     public void openCamera() {
         if (disableCamera) return;
         camera = Camera.open(selectedCameraId);
-        Camera.Parameters parameters = camera.getParameters();
-        int degree = Utils.getCameraDisplayOrientation(context, selectedCameraId);
-        camera.setDisplayOrientation(degree);
-        boolean rotate = degree == 90 || degree == 270;
-        int adjusted_width = rotate ? EXPECTED_PREVIEW_HEIGHT : EXPECTED_PREVIEW_WIDTH;
-        int adjusted_height = rotate ? EXPECTED_PREVIEW_WIDTH : EXPECTED_PREVIEW_HEIGHT;
-
         List<Size> supportedPreviewSizes = camera.getParameters().getSupportedPreviewSizes();
-
+        Size previewSize = Utils.getOptimalPreviewSize(supportedPreviewSizes, EXPECTED_PREVIEW_WIDTH,
-        Size previewSize = Utils.getOptimalPreviewSize(
+                EXPECTED_PREVIEW_HEIGHT);
-                supportedPreviewSizes, adjusted_width, adjusted_height);
+        Camera.Parameters parameters = camera.getParameters();
-
-        textureWidth = previewSize.width;
-        textureHeight = previewSize.height;
-
         parameters.setPreviewSize(previewSize.width, previewSize.height);
-        camera.setParameters(parameters);
-
         if (parameters.getSupportedFocusModes().contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
             parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
         }
+        camera.setParameters(parameters);
+        int degree = Utils.getCameraDisplayOrientation(context, selectedCameraId);
+        camera.setDisplayOrientation(degree);
+        boolean rotate = degree == 90 || degree == 270;
+        textureWidth = rotate ? previewSize.height : previewSize.width;
+        textureHeight = rotate ? previewSize.width : previewSize.height;
 
         // Destroy FBO and draw textures
         GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);