BUTTON - SU KIEN CHAM BUTTON ONTOUCHLISTENER

// sự kiện chạm cho button tìm

btnTim.setOnTouchListener(new View.OnTouchListener() {
    @Override    

     public boolean onTouch(View v, MotionEvent event) {
        //imvBackActionBar.setBackgroundColor(Color.parseColor("#FF6E9BF5"));        

         switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN: {
                Button view = (Button) v;
                //overlay is black with transparency of 0x77 (119)                

                btnTim.setBackgroundColor(Color.parseColor("#FF6E9BF5"));
                view.invalidate();
                break;
            }
            case MotionEvent.ACTION_UP:
            case MotionEvent.ACTION_CANCEL: {
                Button view = (Button) v;
                //clear the overlay                

                btnTim.setBackgroundColor(Color.parseColor("#329c1b"));
                view.invalidate();
                break;
            }
        }
        return false;
    }
});