diff --git a/deploy/android_demo/app/src/main/java/com/baidu/paddle/lite/demo/ocr/MainActivity.java b/deploy/android_demo/app/src/main/java/com/baidu/paddle/lite/demo/ocr/MainActivity.java
index 32a82c6fa0e31275c70857034711edd866347a75..f932718dcab99e59e63ccf341c35de9c547926cb 100644
--- a/deploy/android_demo/app/src/main/java/com/baidu/paddle/lite/demo/ocr/MainActivity.java
+++ b/deploy/android_demo/app/src/main/java/com/baidu/paddle/lite/demo/ocr/MainActivity.java
@@ -280,20 +280,13 @@ public class MainActivity extends AppCompatActivity {
         tvStatus.setText("STATUS: run model failed");
     }
 
-    public void onImageChanged(Bitmap image) {
-        // Rerun model if users pick test image from gallery or camera
-        if (image != null && predictor.isLoaded()) {
-            predictor.setInputImage(image);
-            runModel();
-        }
-    }
-
     public void set_img() {
         // Load test image from path and run model
         try {
             assetManager = getAssets();
             InputStream in = assetManager.open(imagePath);
             Bitmap bmp = BitmapFactory.decodeStream(in);
+            cur_predict_image = bmp;
             ivInputImage.setImageBitmap(bmp);
         } catch (IOException e) {
             Toast.makeText(MainActivity.this, "Load image failed!", Toast.LENGTH_SHORT).show();
@@ -420,7 +413,7 @@ public class MainActivity extends AppCompatActivity {
                         Cursor cursor = managedQuery(uri, proj, null, null, null);
                         cursor.moveToFirst();
                         if (image != null) {
-//                            onImageChanged(image);
+                            cur_predict_image = image;
                             ivInputImage.setImageBitmap(image);
                         }
                     } catch (IOException e) {
@@ -441,7 +434,7 @@ public class MainActivity extends AppCompatActivity {
                         Bitmap image = BitmapFactory.decodeFile(currentPhotoPath);
                         image = Utils.rotateBitmap(image, orientation);
                         if (image != null) {
-//                            onImageChanged(image);
+                            cur_predict_image = image;
                             ivInputImage.setImageBitmap(image);
                         }
                     } else {
@@ -464,14 +457,14 @@ public class MainActivity extends AppCompatActivity {
     }
 
     public void btn_run_model_click(View view) {
-        cur_predict_image = ((BitmapDrawable) ivInputImage.getDrawable()).getBitmap();
-        if (cur_predict_image == null) {
+        Bitmap image = ((BitmapDrawable) ivInputImage.getDrawable()).getBitmap();
+        if (image == null) {
             tvStatus.setText("STATUS: image is not exists");
         } else if (!predictor.isLoaded()) {
             tvStatus.setText("STATUS: model is not loaded");
         } else {
             tvStatus.setText("STATUS: run model ...... ");
-            predictor.setInputImage(cur_predict_image);
+            predictor.setInputImage(image);
             runModel();
         }
     }
diff --git a/deploy/android_demo/app/src/main/java/com/baidu/paddle/lite/demo/ocr/Predictor.java b/deploy/android_demo/app/src/main/java/com/baidu/paddle/lite/demo/ocr/Predictor.java
index b977bfb5249b2a828f1205983e64c9d0d6e8d658..ab312161d14ba2c1cdbad278b248bd68b042ed39 100644
--- a/deploy/android_demo/app/src/main/java/com/baidu/paddle/lite/demo/ocr/Predictor.java
+++ b/deploy/android_demo/app/src/main/java/com/baidu/paddle/lite/demo/ocr/Predictor.java
@@ -230,7 +230,7 @@ public class Predictor {
             OcrResultModel result = results.get(i);
             StringBuilder sb = new StringBuilder("");
             if(result.getPoints().size()>0){
-                sb.append("; Det: ");
+                sb.append("Det: ");
                 for (Point p : result.getPoints()) {
                     sb.append("(").append(p.x).append(",").append(p.y).append(") ");
                 }