适用于无法使用相机图像的盲人的应用，

Question

我正在创建一个应用程序，以帮助盲人感觉屏幕。这个想法是，手机会根据您触摸的像素的颜色产生不同的声音。画廊图片可以正常工作，但相机图片可以崩溃。

public void onActivityResult(int requestCode, int resultCode, Intent 
data){
       super.onActivityResult(requestCode, resultCode, data);
        if (resultCode== Activity.RESULT_OK){
            if (requestCode==REQUEST_CAMERA){
            Bundle bundle=data.getExtras();
            final Bitmap bmp= (Bitmap) bundle.get("data");
            imageView.setImageBitmap(bmp);

        } else if (requestCode==SELECT_FILE){
            Uri selectedImageUri=data.getData();
            imageView.setImageURI(selectedImageUri);
        }
    }
    bitmap = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
    //end of image


    imageView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent motionEvent) {
            switch (motionEvent.getAction()) {
                //action down
                case MotionEvent.ACTION_DOWN: {
                    x = (int) motionEvent.getX();
                    y = (int) motionEvent.getY();
                    pixel = bitmap.getPixel(x, y);
                    //here
                    red = (float) Color.red(pixel) / 100;
                    green = (float) Color.green(pixel) / 100;
                    blue = (float) Color.blue(pixel) / 100;
                    //here
                    mpRed.start();
                    mpBlue.start();
                    mpYellow.start();
                    mpRed.setVolume(red, red);
                    mpBlue.setVolume(blue, blue);
                    mpYellow.setVolume(green, green);

                    break;
                }
                //action down
                case MotionEvent.ACTION_MOVE: {
                    x = (int) motionEvent.getX();
                    y = (int) motionEvent.getY();
                    pixel = bitmap.getPixel(x, y);
                    //here
                    red = (float) Color.red(pixel) / 100;
                    green = (float) Color.green(pixel) / 100;
                    blue = (float) Color.blue(pixel) / 100;
                    mpRed.setVolume(red, red);
                    mpBlue.setVolume(blue, blue);
                    mpYellow.setVolume(green, green);
                    break;
                    //here
                }
                case MotionEvent.ACTION_UP: {
                    mpRed.seekTo(0);
                    mpBlue.seekTo(0);
                    mpYellow.seekTo(0);
                    mpRed.pause();
                    mpYellow.pause();
                    mpBlue.pause();

                    return false;
                }
            }
            return true;
        }
    });
   }

PS：请稍等，我只是想帮助学生的语言老师，所以如果这是一个愚蠢的问题，请不要感到惊讶。