onShowFileChooser() from android webview works only once

Question

I need to pick images from the device and upload it to the server. For the first time, when I pick the images, onShowFileChooser() gets called and everything works. But, when I try to click upload again, onShowFileChooser() never gets called. But it's working for non-lollypop devices. openFileChoser() gets called, whenever I click upload. Is there anything that I'm missing. Here is my code :

        //Needed for file upload feature         vWebView.setWebChromeClient(new WebChromeClient() {              // file upload callback (Android 2.2 (API level 8) -- Android 2.3 (API level 10)) (hidden method)             public void openFileChooser(ValueCallback<Uri> filePathCallback) {                 showAttachmentDialog(filePathCallback);             }              // file upload callback (Android 3.0 (API level 11) -- Android 4.0 (API level 15)) (hidden method)             public void openFileChooser(ValueCallback filePathCallback, String acceptType) {                 showAttachmentDialog(filePathCallback);             }              // file upload callback (Android 4.1 (API level 16) -- Android 4.3 (API level 18)) (hidden method)             public void openFileChooser(ValueCallback<Uri> filePathCallback, String acceptType, String capture) {                 showAttachmentDialog(filePathCallback);              }              // file upload callback (Android 5.0 (API level 21) -- current) (public method)              // for Lollipop, all in one             @Override              public boolean onShowFileChooser(                     WebView webView, ValueCallback<Uri[]> filePathCallback,                     WebChromeClient.FileChooserParams fileChooserParams) {                 // Double check that we don't have any existing callbacks                 if (mFilePathCallbackArray != null) {                     mFilePathCallbackArray.onReceiveValue(null);                 }                 mFilePathCallbackArray = filePathCallback;                 // Set up the take picture intent                  if (mTypeCap == IMAGE) {                     Intent takePictureIntent = pictureIntentSetup();                     return showChooserDialog(takePictureIntent);                 }                 //set up video capture intent                 else {                     Intent takeVideoIntent = videoIntentSetUp();                     return showChooserDialog(takeVideoIntent);                 }              }          });    //For lollypop     private Intent pictureIntentSetup() {         Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);         if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null) {              // create the file where the photo should go             File photoFile = null;             try {                 photoFile = createImageFile();                 takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);             } catch (IOException ex) {                 // Error occurred while creating the File                 Log.e("Failed", "Unable to create Image File", ex);             }              // continue only if the file was successfully created             if (photoFile != null) {                 mCameraPhotoPath = "file:" + photoFile.getAbsolutePath();                 takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,                         Uri.fromFile(photoFile));             } else {                 takePictureIntent = null;             }         }         return takePictureIntent;      }      //For lollypop     private Intent videoIntentSetUp() {         Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);         if (takeVideoIntent.resolveActivity(getActivity().getPackageManager()) != null) {              // create the file where the video should go             File videoFile = null;             try {                 videoFile = createVideoFile();                 takeVideoIntent.putExtra("PhotoPath", mCameraPhotoPath);             } catch (IOException ex) {                 // Error occurred while creating the File                 Log.e("Failed", "Unable to create Video File", ex);             }              // continue only if the file was successfully created             if (videoFile != null) {                 mCameraPhotoPath = "file:" + videoFile.getAbsolutePath();                 takeVideoIntent.putExtra(MediaStore.EXTRA_OUTPUT,                         Uri.fromFile(videoFile));             } else {                 takeVideoIntent = null;             }         }         return takeVideoIntent;     }  //For lollypop     private boolean showChooserDialog(Intent intent) {         Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);         contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);         if (mTypeCap.equalsIgnoreCase(IMAGE))             contentSelectionIntent.setType(IMAGE);         else             contentSelectionIntent.setType(VIDEO);          Intent[] intentArray;         if (intent != null) {             intentArray = new Intent[]{intent};         } else {             intentArray = new Intent[0];         }          Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);         chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);         if (mTypeCap.equalsIgnoreCase(IMAGE))             chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");         else             chooserIntent.putExtra(Intent.EXTRA_TITLE, "Video Chooser");         chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);          getActivity().startActivityForResult(chooserIntent, FILE_CHOOSER_RESULT_CODE);          return true;     } 

OnActivityResult of the activity:

  @Override     protected void onActivityResult(int requestCode, int resultCode, Intent data) {         super.onActivityResult(requestCode, resultCode, data);   //File upload related             if (requestCode == NewsDetailFragment.FILE_CHOOSER_RESULT_CODE && (resultCode == RESULT_OK || resultCode == RESULT_CANCELED)) {                 Fragment fragment = getSupportFragmentManager()                         .findFragmentById(R.id.container);                 if (fragment != null && fragment instanceof DetailFragment) {                     Fragment currentFragment = ((DetailFragment) fragment).getCurrentFragment();                     if (currentFragment instanceof WebDetailFragment)                         currentFragment.onActivityResult(requestCode, resultCode, data);                 }             }          } } 

onActivityResult of fragment:

 @Override     public void onActivityResult(int requestCode, int resultCode, Intent intentData) {         super.onActivityResult(requestCode, resultCode, intentData);         // code for all versions except of Lollipop         if (!Utility.isLollypopAndAbove()) {             Uri result = null;             // check that the response is a good one             if (resultCode == Activity.RESULT_OK) {                 if (requestCode == FILE_CHOOSER_RESULT_CODE) {                     if (null == this.mFilePathCallback) {                         return;                     }                     if (null == mFilePathCallback) return;                       if (intentData == null) {                         // if there is not data, then we may have taken a photo                         if (mCameraPhotoPath != null) {                             result = Uri.parse(mCameraPhotoPath);                         }                     } else {                         String dataString = intentData.getDataString();                         if (dataString != null) {                             result = Uri.parse(dataString);                         }                     } //                Uri result = intentData == null || resultCode != Activity.RESULT_OK ? null //                        : intentData.getData();                  }                  //  for Lollipop only             }             mFilePathCallback.onReceiveValue(result);             mFilePathCallback = null;         }         else  {             Uri[] results = null;              // check that the response is a good one             if(resultCode==Activity.RESULT_OK) {                 if (requestCode == FILE_CHOOSER_RESULT_CODE) {                     if (null == mFilePathCallbackArray) {                         return;                     }                     if (intentData == null) {                         // if there is not data, then we may have taken a photo                         if (mCameraPhotoPath != null) {                             results = new Uri[]{Uri.parse(mCameraPhotoPath)};                         }                     } else {                         String dataString = intentData.getDataString();                         if (dataString != null) {                             results = new Uri[]{Uri.parse(dataString)};                         }                     }                 }             }             mFilePathCallbackArray.onReceiveValue(results);             mFilePathCallbackArray = null;             return;          }     } 

Answer 1

firstly, sorry to my english. you should return empty Uri[]{} to file receive

mUploadMessageForAndroid5.onReceiveValue(new Uri[]{}); 

my code can choose take photo or local image:

private static final int REQUEST_GET_THE_THUMBNAIL = 4000; private static final long ANIMATION_DURATION = 200; public final static int FILECHOOSER_RESULTCODE = 1; public final static int FILECHOOSER_RESULTCODE_FOR_ANDROID_5 = 2;  //JS webView.getSettings().setJavaScriptEnabled(true);  //set ChromeClient webView.setWebChromeClient(getChromeClient());  //ChromeClinet配置 private WebChromeClient getChromeClient() {     return new WebChromeClient() {          //3.0++         public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {             openFileChooserImpl(uploadMsg);         }          //3.0--         public void openFileChooser(ValueCallback<Uri> uploadMsg) {             openFileChooserImpl(uploadMsg);         }          public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {             openFileChooserImpl(uploadMsg);         }          // For Android > 5.0         public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> uploadMsg, WebChromeClient.FileChooserParams fileChooserParams) {             openFileChooserImplForAndroid5(uploadMsg);             return true;         }      }; }  private void openFileChooserImpl(ValueCallback<Uri> uploadMsg) {     mUploadMessage = uploadMsg;     new AlertDialog.Builder(mActivity)             .setItems(items, new DialogInterface.OnClickListener() {                 @Override                 public void onClick(DialogInterface dialog, int which) {                     if (items[which].equals(items[0])) {                         Intent i = new Intent(Intent.ACTION_GET_CONTENT);                         i.addCategory(Intent.CATEGORY_OPENABLE);                         i.setType("image/*");                         startActivityForResult(Intent.createChooser(i, "File Chooser"), FILECHOOSER_RESULTCODE);                     } else if (items[which].equals(items[1])) {                         dispatchTakePictureIntent();                     }                     dialog.dismiss();                 }             })             .setOnCancelListener(new DialogInterface.OnCancelListener() {                 @Override                 public void onCancel(DialogInterface dialog) {                     Log.v(TAG, TAG + " # onCancel");                     mUploadMessage = null;                     dialog.dismiss();             }})             .show(); }  private void openFileChooserImplForAndroid5(ValueCallback<Uri[]> uploadMsg) {     mUploadMessageForAndroid5 = uploadMsg;      new AlertDialog.Builder(mActivity)             .setItems(items, new DialogInterface.OnClickListener() {                 @Override                 public void onClick(DialogInterface dialog, int which) {                     if (items[which].equals(items[0])) {                         Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);                         contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);                         contentSelectionIntent.setType("image/*");                          Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);                         chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);                         chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");                          startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE_FOR_ANDROID_5);                     } else if (items[which].equals(items[1])) {                         dispatchTakePictureIntent();                     }                     dialog.dismiss();                 }             })             .setOnCancelListener(new DialogInterface.OnCancelListener() {                 @Override                 public void onCancel(DialogInterface dialog) {                     Log.v(TAG, TAG + " # onCancel");                     //important to return new Uri[]{}, when nothing to do. This can slove input file wrok for once.                     //InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.                     mUploadMessageForAndroid5.onReceiveValue(new Uri[]{});                     mUploadMessageForAndroid5 = null;                     dialog.dismiss();             }}).show(); }  private void dispatchTakePictureIntent() {     Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);     if (takePictureIntent.resolveActivity(mActivity.getPackageManager()) != null) { //            File file = new File(createImageFile());         Uri imageUri = null;         try {             imageUri = Uri.fromFile(createImageFile());         } catch (IOException e) {             e.printStackTrace();         }         //temp sd card file         takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);         startActivityForResult(takePictureIntent, REQUEST_GET_THE_THUMBNAIL);     } }  private File createImageFile() throws IOException {     // Create an image file name     String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());     String imageFileName = "JPEG_" + timeStamp + "_";     File storageDir = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/don_test/");     if (!storageDir.exists()) {         storageDir.mkdirs();     }     File image = File.createTempFile(             imageFileName,  /* prefix */             ".jpg",         /* suffix */             storageDir      /* directory */     );      // Save a file: path for use with ACTION_VIEW intents     mCurrentPhotoPath = image.getAbsolutePath();     return image; }  @Override public void onActivityResult(int requestCode, int resultCode, Intent intent) {     Log.v(TAG, TAG + " # onActivityResult # requestCode=" + requestCode + " # resultCode=" + resultCode);     if (requestCode == FILECHOOSER_RESULTCODE) {         if (null == mUploadMessage)             return;         Uri result = intent == null || resultCode != Activity.RESULT_OK ? null : intent.getData();         mUploadMessage.onReceiveValue(result);         mUploadMessage = null;      } else if (requestCode == FILECHOOSER_RESULTCODE_FOR_ANDROID_5) {         if (null == mUploadMessageForAndroid5)             return;         Uri result;          if (intent == null || resultCode != Activity.RESULT_OK) {             result = null;         } else {             result = intent.getData();         }          if (result != null) {             Log.v(TAG, TAG + " # result.getPath()=" + result.getPath());             mUploadMessageForAndroid5.onReceiveValue(new Uri[]{result});         } else {             mUploadMessageForAndroid5.onReceiveValue(new Uri[]{});         }         mUploadMessageForAndroid5 = null;     } else if (requestCode == REQUEST_GET_THE_THUMBNAIL) {         if (resultCode == Activity.RESULT_OK) {             File file = new File(mCurrentPhotoPath);             Uri localUri = Uri.fromFile(file);             Intent localIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, localUri);             mActivity.sendBroadcast(localIntent);              Uri result = Uri.fromFile(file);             mUploadMessageForAndroid5.onReceiveValue(new Uri[]{result});             mUploadMessageForAndroid5 = null;         } else {              File file = new File(mCurrentPhotoPath);             Log.v(TAG, TAG + " # file=" + file.exists());             if (file.exists()) {                 file.delete();             }         }     } } 

Answer 2

Faced similar problem i was returning boolean value in method onShowFileChooser, issue was fixed when i called super class method

        @Override         public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {             //Logic to implement              return super.onShowFileChooser(webView, filePathCallback, fileChooserParams);         }