diff --git a/java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/detection/DetectionMainActivity.java b/java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/detection/DetectionMainActivity.java
index c8d7cb09a..bc588f376 100644
--- a/java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/detection/DetectionMainActivity.java
+++ b/java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/detection/DetectionMainActivity.java
@@ -19,6 +19,7 @@ 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;
@@ -207,12 +208,15 @@ public class DetectionMainActivity extends Activity implements View.OnClickListe
 
     @Override
     public boolean onTextureChanged(Bitmap ARGB8888ImageBitmap) {
+        Log.d(TAG, "onTextureChanged: bitmap height: "
+                + ARGB8888ImageBitmap.getHeight() + " width: "
+                + ARGB8888ImageBitmap.getWidth());
         String savedImagePath = "";
         synchronized (this) {
-            savedImagePath = Utils.getDCIMDirectory() + File.separator + "result.png";
+            savedImagePath = Utils.getDCIMDirectory() + File.separator + "result.jpg";
         }
-        shutterBitmap = ARGB8888ImageBitmap.copy(Bitmap.Config.ARGB_8888,true);
-        originShutterBitmap = ARGB8888ImageBitmap.copy(Bitmap.Config.ARGB_8888,true);
+        shutterBitmap = ARGB8888ImageBitmap.copy(Bitmap.Config.ARGB_8888, true);
+        originShutterBitmap = ARGB8888ImageBitmap.copy(Bitmap.Config.ARGB_8888, true);
         boolean modified = false;
         DetectionResult result = predictor.predict(
                 ARGB8888ImageBitmap, savedImagePath, DetectionSettingsActivity.scoreThreshold);
diff --git a/java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/ocr/OcrMainActivity.java b/java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/ocr/OcrMainActivity.java
index 4a230372f..55f729482 100644
--- a/java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/ocr/OcrMainActivity.java
+++ b/java/android/app/src/main/java/com/baidu/paddle/fastdeploy/app/examples/ocr/OcrMainActivity.java
@@ -205,8 +205,8 @@ public class OcrMainActivity extends Activity implements View.OnClickListener, C
     }
 
     public void checkAndUpdateSettings() {
-        if (SettingsActivity.checkAndUpdateSettings(this)) {
-            String realModelDir = getCacheDir() + "/" + SettingsActivity.modelDir;
+        if (OcrSettingsActivity.checkAndUpdateSettings(this)) {
+            String realModelDir = getCacheDir() + "/" + OcrSettingsActivity.modelDir;
             String detModelName = "ch_PP-OCRv2_det_infer";
             // String detModelName = "ch_ppocr_mobile_v2.0_det_infer";
             String clsModelName = "ch_ppocr_mobile_v2.0_cls_infer";
@@ -234,13 +234,13 @@ public class OcrMainActivity extends Activity implements View.OnClickListener, C
             RuntimeOption detOption = new RuntimeOption();
             RuntimeOption clsOption = new RuntimeOption();
             RuntimeOption recOption = new RuntimeOption();
-            detOption.setCpuThreadNum(SettingsActivity.cpuThreadNum);
-            clsOption.setCpuThreadNum(SettingsActivity.cpuThreadNum);
-            recOption.setCpuThreadNum(SettingsActivity.cpuThreadNum);
-            detOption.setLitePowerMode(SettingsActivity.cpuPowerMode);
-            clsOption.setLitePowerMode(SettingsActivity.cpuPowerMode);
-            recOption.setLitePowerMode(SettingsActivity.cpuPowerMode);
-            if (Boolean.parseBoolean(SettingsActivity.enableLiteFp16)) {
+            detOption.setCpuThreadNum(OcrSettingsActivity.cpuThreadNum);
+            clsOption.setCpuThreadNum(OcrSettingsActivity.cpuThreadNum);
+            recOption.setCpuThreadNum(OcrSettingsActivity.cpuThreadNum);
+            detOption.setLitePowerMode(OcrSettingsActivity.cpuPowerMode);
+            clsOption.setLitePowerMode(OcrSettingsActivity.cpuPowerMode);
+            recOption.setLitePowerMode(OcrSettingsActivity.cpuPowerMode);
+            if (Boolean.parseBoolean(OcrSettingsActivity.enableLiteFp16)) {
                 detOption.enableLiteFp16();
                 clsOption.enableLiteFp16();
                 recOption.enableLiteFp16();
diff --git a/java/android/app/src/main/res/layout/detection_camera_page.xml b/java/android/app/src/main/res/layout/detection_camera_page.xml
index af65ebc42..c4f79d2c9 100644
--- a/java/android/app/src/main/res/layout/detection_camera_page.xml
+++ b/java/android/app/src/main/res/layout/detection_camera_page.xml
@@ -15,7 +15,7 @@
         <com.baidu.paddle.fastdeploy.app.ui.layout.ActionBarLayout
             android:id="@+id/action_bar_main"
             android:layout_width="match_parent"
-            android:layout_height="wrap_content">
+            android:layout_height="wrap_content"/>
 
             <ImageView
                 android:id="@+id/back_in_preview"