Tint / dim drawable on touch

Question

The app I\'m currently working on uses a lot of ImageViews as buttons. The graphics on these buttons use the alpha channel to fade out the edges of the button and make them look

Answer 1

Your answer was excellent :)

However instead of creating a button object, I am only calling an OnTouchlistener to change the state of every view.

public boolean onTouch(View v, MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_DOWN) {
        Drawable background =  v.getBackground();
        background.setColorFilter(0xBB000000, PorterDuff.Mode.SCREEN);
        v.setBackgroundDrawable(background);
    } else if (event.getAction() == MotionEvent.ACTION_UP) {
        Drawable background =  v.getBackground();
        background.setColorFilter(null);
        v.setBackgroundDrawable(background);
    }

    return true;

}

Gives the same results though