How to set button click effect in Android?

Question

In Android, when I set background image to Button, I can not see any effect on button.

I need some effect on button so user can recognize that button is clicked.

Answer 1

Step: set a button in XML with onClick Action:

 

Step: on button clicked show animation point
//pgrm mark ---- ---- ----- ---- ---- ----- ---- ---- -----  ---- ---- -----

    public void edit_user_info(View view) {

        // show click effect on button pressed
        final AlphaAnimation buttonClick = new AlphaAnimation(1F, 0.8F);
        view.startAnimation(buttonClick);

        Intent intent = new Intent(getApplicationContext(),  EditUserInfo.class);
        startActivity(intent);

    }// end edit_user_info