拍照后并将结果传送到onActivityResult时，应用程序崩溃

Question

I am trying to take a picture by calling camera intent and show it in a image view. My code works on almost all devices except on some MI Devices with kitkat version. Here is my code

     private void initializeCameraIntent() {
            Permiso.getInstance().requestPermissions(new Permiso.IOnPermissionResult() {
           /* if (ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.CAMERA)
                    == PackageManager.PERMISSION_DENIED){*/
                @Override
                public void onPermissionResult(Permiso.ResultSet resultSet) {
                    if (resultSet.areAllPermissionsGranted()) {
                        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                        File photoFile = null;
                        try {
                            photoFile = createImageFile();
                        } catch (IOException ex) {
                            Log.e(TAG, "onTileSelected: ", ex);
                        }
                        if (photoFile != null) {
                            Uri uri = Uri.fromFile(photoFile);
                            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
                            imageUri = uri.toString();
                            startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
                        }
                    } else {
                        Toast.makeText(MessagesFragment.this.getActivity(),
                                getString(R.string.msg_permission_required), Toast.LENGTH_LONG).show();
                    }
                }

                @Override
                public void onRationaleRequested(Permiso.IOnRationaleProvided callback, String... permissions) {
                    Permiso.getInstance().showRationaleInDialog(null,
                            getString(R.string.msg_permission_required),
                            null, callback);
                }
            }, Manifest.permission.WRITE_EXTERNAL_STORAGE);
        }
 protected File createImageFile() throws IOException {
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
        String imageFileName = "IMG_" + timeStamp;
        File storageDir = Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_PICTURES);
        if (!storageDir.exists()) {
            if (!storageDir.mkdirs()) {
                return null;
            }
        }
        return File.createTempFile(imageFileName, ".jpg", storageDir);
    }

 @Override public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
            switch (requestCode) {
                case REQUEST_IMAGE_CAPTURE:
                    if (!imageUri.isEmpty()) {
                        showSendImageFragment(imageUri);
                        imageUri = "";
                    }
                    break;
}

And below is the exception thrown in some devices

Caused by: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=65537, result=-1, data=null} to activity {com.xxx.xxx/com.xxx.xxx.view.activity.MainActivity}: java.lang.NullPointerException

Please Someone help me fixing this. It works on every Other device.

Answer 1

Its a MI devices Security issue.You wont be able to get the direct path of your selected file They will just provide only the content provider Url I suggested you use this Coomar Picker Library .I also got stuck on the same issue for so many days.This is the only solution i have found it.This will save your time

And Here is the wiki for it WIKI

Answer 2

I think your imageUri is becoming null when your are calling startActivityForResult(intent) method you can replicate the issue on other devices by going to developer options enabling do not keep activities option to overcome this issue. Override onSaveInstanceState and onRestoreInstanceState methods in your activity

@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    if (imageUri != null){
        outState.putString("cameraImageUri", imageUri.toString());
    }
}

@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
    if (savedInstanceState.containsKey("cameraImageUri")){
        imageUri = Uri.parse(savedInstanceState.getString("imageUri"));
    }
}