Android image resizing after camera intent callback

my first question is here! I have a problem with a code fragment that triggers the camera’s intention with additional output parameters, and then, based on the result of activity, tries to resize this image. what happens is that the nullpointer exception gets a throw in the resize function on the callback.

The original large photo is saved in the file system, since I can access it from the file system.

The original jpeg camera is 2560x1920 and the phone used is Google Nexus.

I do not have a clear idea why resizing does not work, does anyone have an understanding?

Here is the code:

The takePicture function, which also creates a dummy file:

        public boolean takePicture( ) {

            Log.e(TAG, "takePicture interface function");
            String FileUri = Environment.getExternalStorageDirectory()  + "/samples/";
            File file = new File(FileUri,"picture"+ pictureNumber +".jpg");
            try {
                file.createNewFile();
                } catch (IOException e) {
                e.printStackTrace();
                }
                Uri outputFileUri = Uri.fromFile(file);

            Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
            cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
            startActivityForResult(cameraIntent, CAMERA_REQUEST);
            Log.e(TAG, "intent started");
            return true;
        }

Activity callback function:

    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 

        // handle the camera request returns and handle back button in camera.

        if (requestCode == CAMERA_REQUEST && resultCode == RESULT_CANCELED ) {
            Toast toast = Toast.makeText(this,"Canceled, no picture taken.", 1000);
            toast.show();
            return;
           }

        else if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK ) { 

            Log.e(TAG, "Camera intent return");

            Bitmap scaledphoto = null;
            int height = 300;
            int width = 300;    

            Bitmap photo = BitmapFactory.decodeFile( APP_DATA_PATH + "/samples/picture" + pictureNumber + ".jpg" );
            Log.e(TAG, "Picture fetched");

            scaledphoto = Bitmap.createScaledBitmap(photo, height, width, true);


            Log.e(TAG, "Picture scaled");

            saveImageToFile(scaledphoto, "picture" + pictureNumber + ".jpg");


            Log.e(TAG, "Scaled picture saved");

            myWebView.loadUrl("javascript:pictureTaken(\""+ pictureLoc + "\")");

            pictureNumber++;

LogCat:

06-21 14:59:13.496: E/AndroidRuntime(6130): FATAL EXCEPTION: main
06-21 14:59:13.496: E/AndroidRuntime(6130): java.lang.RuntimeException: Failure     delivering result ResultInfo{who=null, request=1888, result=-1, data=null} to activity {test.test/test.test.CameraIntentTestActivity}: java.lang.NullPointerException
06-21 14:59:13.496: E/AndroidRuntime(6130):     at android.app.ActivityThread.deliverResults(ActivityThread.java:2980)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at android.app.ActivityThread.handleSendResult(ActivityThread.java:3023)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at android.app.ActivityThread.access$1100(ActivityThread.java:123)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1177)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at android.os.Looper.loop(Looper.java:137)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at android.app.ActivityThread.main(ActivityThread.java:4424)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at java.lang.reflect.Method.invokeNative(Native Method)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at java.lang.reflect.Method.invoke(Method.java:511)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
06-21 14:59:13.496: E/AndroidRuntime(6130):     at dalvik.system.NativeStart.main(Native Method)
06-21 14:59:13.496: E/AndroidRuntime(6130): Caused by: java.lang.NullPointerException
06-21 14:59:13.496: E/AndroidRuntime(6130):     at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:432)