[Android] Add facedet Android app example (#614)

* [Backend] fix lite backend save model error

* [Backend] fixed typos

* [FlyCV] optimize the integration of FlyCV

* [cmake] close some tests options

* [cmake] close some test option

* [FlyCV] remove un-need warnings

* [FlyCV] remove un-need GetMat method

* [FlyCV] optimize FlyCV codes

* [cmake] remove un-need cmake function in examples/CMakelists

* [cmake] support gflags for Android

* [Android] Run button shutter in sub Ui Thread

* [Android] Update CameraSurfaceView

* [Android] Update Android SDK usage docs

* [Android] Add facedet Android app example

java/android/README.md

@@ -188,9 +188,10 @@ public boolean init(String modelFile, String paramsFile, RuntimeOption option);
 ```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 scoreThreshold);
+public FaceDetectionResult predict(Bitmap ARGB8888Bitmap, String savedImagePath, float confThreshold, float nmsIouThreshold);
-public FaceDetectionResult predict(Bitmap ARGB8888Bitmap, boolean rendering, float scoreThreshold); // 只渲染 不保存图片
+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
@@ -216,9 +217,10 @@ public boolean init(String modelFile, String paramsFile, RuntimeOption option);
 ```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 scoreThreshold);
+public FaceDetectionResult predict(Bitmap ARGB8888Bitmap, String savedImagePath, float confThreshold, float nmsIouThreshold);
-public FaceDetectionResult predict(Bitmap ARGB8888Bitmap, boolean rendering, float scoreThreshold); // 只渲染 不保存图片
+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

java/android/app/src/main/AndroidManifest.xml

@@ -11,18 +11,18 @@
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
-        android:label="@string/detection_app_name"
+        android:label="@string/facedet_app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".detection.DetectionMainActivity">
+        <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=".detection.DetectionSettingsActivity"
+            android:name=".facedet.FaceDetSettingsActivity"
             android:label="Settings">
         </activity>
     </application>

java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/detection/DetectionMainActivity.java

@@ -1,8 +1,5 @@
 package com.baidu.paddle.fastdeploy.app.examples.detection;
 
-import static com.baidu.paddle.fastdeploy.app.ui.Utils.decodeBitmap;
-import static com.baidu.paddle.fastdeploy.app.ui.Utils.getRealPathFromURI;
-
 import android.Manifest;
 import android.annotation.SuppressLint;
 import android.app.Activity;
@@ -34,6 +31,7 @@ import android.widget.TextView;
 
 import com.baidu.paddle.fastdeploy.RuntimeOption;
 import com.baidu.paddle.fastdeploy.app.examples.R;
+import com.baidu.paddle.fastdeploy.app.examples.facedet.FaceDetMainActivity;
 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;
@@ -42,13 +40,14 @@ import com.baidu.paddle.fastdeploy.app.ui.view.model.BaseResultModel;
 import com.baidu.paddle.fastdeploy.vision.DetectionResult;
 import com.baidu.paddle.fastdeploy.vision.detection.PicoDet;
 
+import static com.baidu.paddle.fastdeploy.app.ui.Utils.decodeBitmap;
+import static com.baidu.paddle.fastdeploy.app.ui.Utils.getRealPathFromURI;
+
 import java.io.File;
 import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
 
-import javax.microedition.khronos.opengles.GL10;
-
 public class DetectionMainActivity extends Activity implements View.OnClickListener, CameraSurfaceView.OnTextureChangedListener {
     private static final String TAG = DetectionMainActivity.class.getSimpleName();
 
@@ -122,7 +121,7 @@ public class DetectionMainActivity extends Activity implements View.OnClickListe
                 break;
             case R.id.btn_shutter:
                 TYPE = BTN_SHUTTER;
-                runOnShutterUiThread();
+                shutterAndPauseCamera();
                 break;
             case R.id.btn_settings:
                 startActivity(new Intent(DetectionMainActivity.this, DetectionSettingsActivity.class));
@@ -154,13 +153,20 @@ public class DetectionMainActivity extends Activity implements View.OnClickListe
         }
     }
 
-    private void runOnShutterUiThread() {
+    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 * 2); // 100ms
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
                 runOnUiThread(new Runnable() {
                     @SuppressLint("SetTextI18n")
                     public void run() {
-                try {
+                        // These code will run in main thread.
-                    Thread.sleep(TIME_SLEEP_INTERVAL * 2);
-
                         svPreview.onPause();
                         cameraPageView.setVisibility(View.GONE);
                         resultPageView.setVisibility(View.VISIBLE);
@@ -175,11 +181,11 @@ public class DetectionMainActivity extends Activity implements View.OnClickListe
                                     .setCancelable(true)
                                     .show();
                         }
-                } catch (InterruptedException e) {
-                    e.printStackTrace();
-                }
                     }
                 });
+
+            }
+        }).start();
     }
 
     private void copyBitmapFromCamera(Bitmap ARGB8888ImageBitmap) {
@@ -191,6 +197,7 @@ public class DetectionMainActivity extends Activity implements View.OnClickListe
                 shutterBitmap = ARGB8888ImageBitmap.copy(Bitmap.Config.ARGB_8888, true);
                 originShutterBitmap = ARGB8888ImageBitmap.copy(Bitmap.Config.ARGB_8888, true);
             }
+            SystemClock.sleep(TIME_SLEEP_INTERVAL); // 50ms
         }
     }
 
@@ -233,12 +240,10 @@ public class DetectionMainActivity extends Activity implements View.OnClickListe
 
     @Override
     public boolean onTextureChanged(Bitmap ARGB8888ImageBitmap) {
-        synchronized (this) {
         if (TYPE == BTN_SHUTTER) {
             copyBitmapFromCamera(ARGB8888ImageBitmap);
             return false;
         }
-        }
 
         String savedImagePath = "";
         synchronized (this) {

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

@@ -0,0 +1,465 @@
+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.database.Cursor;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.SystemClock;
+import android.preference.PreferenceManager;
+import android.provider.MediaStore;
+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.DetectionResult;
+import com.baidu.paddle.fastdeploy.vision.FaceDetectionResult;
+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.io.File;
+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 resultConfThreshold = 1.0f;
+    private ResultListView detectResultView;
+    private Bitmap shutterBitmap;
+    private Bitmap originShutterBitmap;
+    private Bitmap picBitmap;
+    private Bitmap originPicBitmap;
+
+    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
+
+    String savedImagePath = "result.jpg";
+    int lastFrameIndex = 0;
+    long lastFrameTime;
+
+    // Call 'init' and 'release' manually later
+    SCRFD predictor = new SCRFD();
+
+    @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();
+
+        // Init the camera preview and UI components
+        initView();
+
+        // Check and request CAMERA and WRITE_EXTERNAL_STORAGE permissions
+        if (!checkAllPermissions()) {
+            requestAllPermissions();
+        }
+    }
+
+    @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();
+                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);
+                }
+                break;
+            case R.id.back_in_result:
+                resultPageView.setVisibility(View.GONE);
+                cameraPageView.setVisibility(View.VISIBLE);
+                TYPE = REALTIME_DETECT;
+                svPreview.onResume();
+                break;
+        }
+    }
+
+    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 * 2); // 100ms
+                } 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(resultConfThreshold + "");
+                        confidenceSeekbar.setProgress((int) (resultConfThreshold * 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 (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);
+        }
+    }
+
+    @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(resultConfThreshold + "");
+                confidenceSeekbar.setProgress((int) (resultConfThreshold * 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);
+            svPreview.setOnTextureChangedListener(new CameraSurfaceView.OnTextureChangedListener() {
+                @Override
+                public boolean onTextureChanged(Bitmap ARGB8888ImageBitmap) {
+                    return false;
+                }
+            });
+        }
+    }
+
+    @Override
+    public boolean onTextureChanged(Bitmap ARGB8888ImageBitmap) {
+        if (TYPE == BTN_SHUTTER) {
+            copyBitmapFromCamera(ARGB8888ImageBitmap);
+            return false;
+        }
+
+        String savedImagePath = "";
+        synchronized (this) {
+            savedImagePath = Utils.getDCIMDirectory() + File.separator + "result.jpg";
+        }
+
+        boolean modified = false;
+        FaceDetectionResult result = predictor.predict(
+                ARGB8888ImageBitmap, true, FaceDetSettingsActivity.scoreThreshold, 0.4f);
+        modified = result.initialized();
+        if (!savedImagePath.isEmpty()) {
+            synchronized (this) {
+                FaceDetMainActivity.this.savedImagePath = "result.jpg";
+            }
+        }
+        lastFrameIndex++;
+        if (lastFrameIndex >= 30) {
+            final int fps = (int) (lastFrameIndex * 1e9 / (System.nanoTime() - lastFrameTime));
+            runOnUiThread(new Runnable() {
+                @SuppressLint("SetTextI18n")
+                public void run() {
+                    tvStatus.setText(Integer.toString(fps) + "fps");
+                }
+            });
+            lastFrameIndex = 0;
+            lastFrameTime = System.nanoTime();
+        }
+        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;
+        svPreview = (CameraSurfaceView) findViewById(R.id.sv_preview);
+        svPreview.setOnTextureChangedListener(this);
+        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);
+        detectResultView = findViewById(R.id.result_list_view);
+
+        List<BaseResultModel> results = new ArrayList<>();
+        // TODO: add model results from FaceDetectionResult instead of using fake data.
+        results.add(new BaseResultModel(1, "face", 0.4f));
+        results.add(new BaseResultModel(2, "face", 0.6f));
+        results.add(new BaseResultModel(3, "face", 1.0f));
+        final BaseResultAdapter adapter = new BaseResultAdapter(this, R.layout.facedet_result_page_item, results);
+        detectResultView.setAdapter(adapter);
+        detectResultView.invalidate();
+
+        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);
+                resultConfThreshold = bd.setScale(1, BigDecimal.ROUND_HALF_UP).floatValue();
+                seekbarText.setText(resultConfThreshold + "");
+                confidenceSeekbar.setProgress((int) (resultConfThreshold * 100));
+            }
+
+            @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
+                            if (!picBitmap.isRecycled()) {
+                                predictor.predict(picBitmap, true, resultConfThreshold, 0.4f);
+                                resultImage.setImageBitmap(picBitmap);
+                                picBitmap = originPicBitmap.copy(Bitmap.Config.ARGB_8888, true);
+                            }
+                            resultConfThreshold = 1.0f;
+                        } else {
+                            SystemClock.sleep(TIME_SLEEP_INTERVAL * 10); // 500ms
+                            if (!shutterBitmap.isRecycled()) {
+                                predictor.predict(shutterBitmap, true, resultConfThreshold, 0.4f);
+                                resultImage.setImageBitmap(shutterBitmap);
+                                shutterBitmap = originShutterBitmap.copy(Bitmap.Config.ARGB_8888, true);
+                            }
+                            resultConfThreshold = 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;
+    }
+
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

java/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();
+    }
+}

java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/segmentation/SegmentationMainActivity.java

@@ -0,0 +1,4 @@
+package com.baidu.paddle.fastdeploy.app.examples.segmentation;
+
+public class SegmentationMainActivity {
+}

java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/segmentation/SegmentationSettingsActivity.java

@@ -0,0 +1,4 @@
+package com.baidu.paddle.fastdeploy.app.examples.segmentation;
+
+public class SegmentationSettingsActivity {
+}

java/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>

java/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>

java/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>

java/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>

java/android/app/src/main/res/layout/segmentation_activity_main.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+</android.support.constraint.ConstraintLayout>

java/android/app/src/main/res/layout/segmentation_camera_page.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+</android.support.constraint.ConstraintLayout>

java/android/app/src/main/res/layout/segmentation_result_page.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+</android.support.constraint.ConstraintLayout>

java/android/app/src/main/res/layout/segmentation_result_page_item.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+</android.support.constraint.ConstraintLayout>

java/android/app/src/main/res/values/strings.xml

@@ -5,6 +5,8 @@
     <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>
@@ -18,6 +20,7 @@
     <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 ... -->
@@ -29,6 +32,10 @@
     <!-- 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_infer</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>

java/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>

java/android/app/src/main/res/xml/segmentation_setting.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+</PreferenceScreen>

java/android/fastdeploy/src/main/cpp/fastdeploy_jni/vision/facedet/scrfd_jni.cc

@@ -57,7 +57,8 @@ Java_com_baidu_paddle_fastdeploy_vision_facedet_SCRFD_bindNative(
 JNIEXPORT jobject JNICALL
 Java_com_baidu_paddle_fastdeploy_vision_facedet_SCRFD_predictNative(
     JNIEnv *env, jobject thiz, jlong cxx_context,
-    jobject argb8888_bitmap, jboolean save_image,
+    jobject argb8888_bitmap, jfloat conf_threshold,
+    jfloat nms_iou_threshold, jboolean save_image,
     jstring save_path, jboolean rendering) {
   if (cxx_context == 0) {
     return NULL;
@@ -69,7 +70,7 @@ Java_com_baidu_paddle_fastdeploy_vision_facedet_SCRFD_predictNative(
   auto c_model_ptr = reinterpret_cast<facedet::SCRFD *>(cxx_context);
   vision::FaceDetectionResult c_result;
   auto t = fni::GetCurrentTime();
-  c_model_ptr->Predict(&c_bgr, &c_result);
+  c_model_ptr->Predict(&c_bgr, &c_result, conf_threshold, nms_iou_threshold);
   PERF_TIME_OF_RUNTIME(c_model_ptr, t)
   if (rendering) {
     fni::RenderingFaceDetection(env, c_bgr, c_result, argb8888_bitmap,

java/android/fastdeploy/src/main/cpp/fastdeploy_jni/vision/facedet/yolov5face_jni.cc

@@ -57,7 +57,8 @@ Java_com_baidu_paddle_fastdeploy_vision_facedet_YOLOv5Face_bindNative(
 JNIEXPORT jobject JNICALL
 Java_com_baidu_paddle_fastdeploy_vision_facedet_YOLOv5Face_predictNative(
     JNIEnv *env, jobject thiz, jlong cxx_context,
-    jobject argb8888_bitmap, jboolean save_image,
+    jobject argb8888_bitmap, jfloat conf_threshold,
+    jfloat nms_iou_threshold, jboolean save_image,
     jstring save_path, jboolean rendering) {
   if (cxx_context == 0) {
     return NULL;
@@ -69,7 +70,7 @@ Java_com_baidu_paddle_fastdeploy_vision_facedet_YOLOv5Face_predictNative(
   auto c_model_ptr = reinterpret_cast<facedet::YOLOv5Face *>(cxx_context);
   vision::FaceDetectionResult c_result;
   auto t = fni::GetCurrentTime();
-  c_model_ptr->Predict(&c_bgr, &c_result);
+  c_model_ptr->Predict(&c_bgr, &c_result, conf_threshold, nms_iou_threshold);
   PERF_TIME_OF_RUNTIME(c_model_ptr, t)
   if (rendering) {
     fni::RenderingFaceDetection(env, c_bgr, c_result, argb8888_bitmap,

java/android/fastdeploy/src/main/java/com/baidu/paddle/fastdeploy/vision/facedet/SCRFD.java

@@ -54,7 +54,7 @@ public class SCRFD {
         }
         // Only support ARGB8888 bitmap in native now.
         FaceDetectionResult result = predictNative(mCxxContext, ARGB8888Bitmap,
-                false, "", false);
+                0.25f, 0.4f, false, "", false);
         if (result == null) {
             return new FaceDetectionResult();
         }
@@ -62,13 +62,30 @@ public class SCRFD {
     }
 
     public FaceDetectionResult predict(Bitmap ARGB8888Bitmap,
-                                       boolean rendering) {
+                                       float confThreshold,
+                                       float nmsIouThreshold) {
         if (mCxxContext == 0) {
             return new FaceDetectionResult();
         }
         // Only support ARGB8888 bitmap in native now.
         FaceDetectionResult result = predictNative(mCxxContext, ARGB8888Bitmap,
-                false, "", rendering);
+                confThreshold, nmsIouThreshold, false, "", false);
+        if (result == null) {
+            return new FaceDetectionResult();
+        }
+        return result;
+    }
+
+    public FaceDetectionResult predict(Bitmap ARGB8888Bitmap,
+                                       boolean rendering,
+                                       float confThreshold,
+                                       float nmsIouThreshold) {
+        if (mCxxContext == 0) {
+            return new FaceDetectionResult();
+        }
+        // Only support ARGB8888 bitmap in native now.
+        FaceDetectionResult result = predictNative(mCxxContext, ARGB8888Bitmap,
+                confThreshold, nmsIouThreshold, false, "", rendering);
         if (result == null) {
             return new FaceDetectionResult();
         }
@@ -77,15 +94,17 @@ public class SCRFD {
 
     // Predict with image saving and bitmap rendering (will cost more times)
     public FaceDetectionResult predict(Bitmap ARGB8888Bitmap,
-                                       String savedImagePath) {
+                                       String savedImagePath,
+                                       float confThreshold,
+                                       float nmsIouThreshold) {
         // scoreThreshold is for visualizing only.
         if (mCxxContext == 0) {
             return new FaceDetectionResult();
         }
         // Only support ARGB8888 bitmap in native now.
         FaceDetectionResult result = predictNative(
-                mCxxContext, ARGB8888Bitmap, true,
+                mCxxContext, ARGB8888Bitmap, confThreshold, nmsIouThreshold,
-                savedImagePath, true);
+                true, savedImagePath, true);
         if (result == null) {
             return new FaceDetectionResult();
         }
@@ -128,6 +147,8 @@ public class SCRFD {
     // Call prediction from native context with rendering.
     private native FaceDetectionResult predictNative(long CxxContext,
                                                      Bitmap ARGB8888Bitmap,
+                                                     float confThreshold,
+                                                     float nmsIouThreshold,
                                                      boolean saveImage,
                                                      String savePath,
                                                      boolean rendering);

java/android/fastdeploy/src/main/java/com/baidu/paddle/fastdeploy/vision/facedet/YOLOv5Face.java

@@ -53,7 +53,7 @@ public class YOLOv5Face {
         }
         // Only support ARGB8888 bitmap in native now.
         FaceDetectionResult result = predictNative(mCxxContext, ARGB8888Bitmap,
-                false, "", false);
+                0.25f, 0.4f, false, "", false);
         if (result == null) {
             return new FaceDetectionResult();
         }
@@ -61,13 +61,30 @@ public class YOLOv5Face {
     }
 
     public FaceDetectionResult predict(Bitmap ARGB8888Bitmap,
-                                       boolean rendering) {
+                                       float confThreshold,
+                                       float nmsIouThreshold) {
         if (mCxxContext == 0) {
             return new FaceDetectionResult();
         }
         // Only support ARGB8888 bitmap in native now.
         FaceDetectionResult result = predictNative(mCxxContext, ARGB8888Bitmap,
-                false, "", rendering);
+                confThreshold, nmsIouThreshold, false, "", false);
+        if (result == null) {
+            return new FaceDetectionResult();
+        }
+        return result;
+    }
+
+    public FaceDetectionResult predict(Bitmap ARGB8888Bitmap,
+                                       boolean rendering,
+                                       float confThreshold,
+                                       float nmsIouThreshold) {
+        if (mCxxContext == 0) {
+            return new FaceDetectionResult();
+        }
+        // Only support ARGB8888 bitmap in native now.
+        FaceDetectionResult result = predictNative(mCxxContext, ARGB8888Bitmap,
+                confThreshold, nmsIouThreshold, false, "", rendering);
         if (result == null) {
             return new FaceDetectionResult();
         }
@@ -76,15 +93,17 @@ public class YOLOv5Face {
 
     // Predict with image saving and bitmap rendering (will cost more times)
     public FaceDetectionResult predict(Bitmap ARGB8888Bitmap,
-                                       String savedImagePath) {
+                                       String savedImagePath,
+                                       float confThreshold,
+                                       float nmsIouThreshold) {
         // scoreThreshold is for visualizing only.
         if (mCxxContext == 0) {
             return new FaceDetectionResult();
         }
         // Only support ARGB8888 bitmap in native now.
         FaceDetectionResult result = predictNative(
-                mCxxContext, ARGB8888Bitmap, true,
+                mCxxContext, ARGB8888Bitmap, confThreshold, nmsIouThreshold,
-                savedImagePath, true);
+                true, savedImagePath, true);
         if (result == null) {
             return new FaceDetectionResult();
         }
@@ -127,6 +146,8 @@ public class YOLOv5Face {
     // Call prediction from native context with rendering.
     private native FaceDetectionResult predictNative(long CxxContext,
                                                      Bitmap ARGB8888Bitmap,
+                                                     float confThreshold,
+                                                     float nmsIouThreshold,
                                                      boolean saveImage,
                                                      String savePath,
                                                      boolean rendering);