how to get color at the spot(or pixel) of a image on touch event in android

Shirish Herwade picture Shirish Herwade · Feb 17, 2013 · Viewed 17.8k times · Source

I want to get the color of the spot or pixel where I will touch a image in Android. I searched a lot on net, but got nothing. Please anyone help me.

Answer

roarster picture roarster · Feb 17, 2013

try this:

final Bitmap bitmap = ((BitmapDrawable)imageView.getDrawable()).getBitmap();
imageView.setOnTouchListener(new OnTouchListener(){
        @Override
        public boolean onTouch(View v, MotionEvent event){
        int x = (int)event.getX();
        int y = (int)event.getY();
        int pixel = bitmap.getPixel(x,y);

        //then do what you want with the pixel data, e.g
        int redValue = Color.red(pixel);
        int blueValue = Color.blue(pixel);
        int greenValue = Color.green(pixel);        
        return false;
        }
   });