capture image with camera - Failure delivering result ResultInfo

Question

Im trying to capture image with camera, i do it in this way :

start camera :

public void startPhotoTaker() {

            // create Intent to take a picture and return control to the calling application
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            File photo = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM), "cs_" + new Date().getTime() + ".jpg");
            mLastPhoto = Uri.fromFile(photo);
            intent.putExtra(MediaStore.EXTRA_OUTPUT, mLastPhoto);

            // start the image capture Intent
            startActivityForResult(intent, REQUEST_TAKE_PICTURE);
        }

onActivityResult :

if (requestCode == REQUEST_TAKE_PICTURE) {
                /**
                 Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
                 mediaScanIntent.setData(mLastPhoto);
                 this.sendBroadcast(mediaScanIntent);
                 */

                File file = new File(getRealPathFromURI(mLastPhoto));
                final Handler handler = new Handler();
                MediaScannerConnection.scanFile(
                        this, new String[]{file.toString()}, null,
                        new MediaScannerConnection.OnScanCompletedListener() {
                            public void onScanCompleted(String path, final Uri uri) {

                                handler.post(new Runnable() {
                                    @Override
                                    public void run() {
                                        handleSendDelete(mLastPhoto, "image/*", true);
                                    }
                                });
                            }
                        });
            }

The problem is when i back to the app its colose with error ! its app logcat :

03-03 13:02:22.851: ERROR/AndroidRuntime(1808): FATAL EXCEPTION: main
        java.lang.RuntimeException: Unable to resume activity {info.guardianproject.otr.app.im/info.guardianproject.otr.app.im.app.ChatViewActivity}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=4, result=-1, data=null} to activity {info.guardianproject.otr.app.im/info.guardianproject.otr.app.im.app.ChatViewActivity}: java.lang.NullPointerException
        at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2444)
        at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2472)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1986)
        at android.app.ActivityThread.access$600(ActivityThread.java:123)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:4424)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
        at dalvik.system.NativeStart.main(Native Method)
        Caused by: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=4, result=-1, data=null} to activity {info.guardianproject.otr.app.im/info.guardianproject.otr.app.im.app.ChatViewActivity}: java.lang.NullPointerException
        at android.app.ActivityThread.deliverResults(ActivityThread.java:2980)
        at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2431)
        ... 12 more
        Caused by: java.lang.NullPointerException
        at info.guardianproject.otr.app.im.app.ChatViewActivity.getRealPathFromURI(ChatViewActivity.java:424)
        at info.guardianproject.otr.app.im.app.ChatViewActivity.onActivityResult(ChatViewActivity.java:336)
        at android.app.Activity.dispatchActivityResult(Activity.java:4649)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:2976)
        ... 13 more

I debug my app and i think this field : mLastPhoto is null ! but i dont know why ? it has value when i start the camera !

UPDATE :

public String getRealPathFromURI(Uri contentUri) {
        try {
            String[] proj = {MediaStore.Images.Media.DATA};
            Cursor cursor = managedQuery(contentUri, proj, null, null, null);
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            cursor.moveToFirst();
            return cursor.getString(column_index);
        } catch (Exception e) {
            return contentUri.getPath();
        }
    }

Answer 1

I resolved my problem in this way (Im not sure its the best way but worked for me) :

 @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putString("mLastPhoto", String.valueOf(mLastPhoto));
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
        mLastPhoto = Uri.parse(savedInstanceState.getString("mLastPhoto"));
    }

Answer 2

Try to replace your getRealPathFromURI() method as below, it might be because of Deprecated ManagedQuery(), Also please tell us which device you using it has enough space?

public String getRealPathFromURI(Uri contentUri) {
    String res = null;
    String[] proj = { MediaStore.Images.Media.DATA };
    Cursor cursor = getContentResolver().query(contentUri, proj, null, null, null);
    if(cursor.moveToFirst()){;
       int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
       res = cursor.getString(column_index);
    }
    cursor.close();
    return res;
}

Also update your onActivityResult by updating below two lines

 if(resultCode == RESULT_OK) {
  if (requestCode == REQUEST_TAKE_PICTURE) 
      {
       // Put your code here/.....
   }
  }