How to get pixel value from ImageView

Question

Is there anyways to get the pixel value from ImageView after the click the button ? I have done the digging and searching but most of the solution are using the method imageView.setOnTouchListener(new OnTouchListener().

But what I really want is get the pixel value after click on the button. Any recommendation ?

Answer 1

Try -

private Bitmap bmp;
private int[][] rgbValues;

    bmp = BitmapFactory.decodeResource(getResources(), R.drawable.four_colors);

    //define the array size
    rgbValues = new int[bmp.getWidth()][bmp.getHeight()];

    for(int i=0; i < bmp.getWidth(); i++)
    {
        for(int j=0; j < bmp.getHeight(); j++)
        {
            rgbValues[i][j] = bmp.getPixel(i, j);
        }
    }

For full code go to this link.