Question

I have a view in the UI that is technically an extended ImageView inside a RelativeLayout that I’d rather not change, if possible. I want to show a Drawable from resources (a small PNG with a gradient or a frame) at specific coordinates as a visual feedback when user is tapping the screen (there even is a onShowPress callback). What is the simplest way to do this? I don’t want to modify the layout.xml from which UI is inflated, and I’m not too enthusiastic about overriding onDraw to do extra job there.

Answer 1

This is one easy way to do it using view animation class:

final ImageView aboutButton =   (ImageView) findViewById(R.id.AboutButton);
aboutButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
    Animation myAnim2 = AnimationUtils.loadAnimation(LaunchActivity.this, R.anim.buttons);              
    aboutButton.startAnimation(myAnim2);
    myAnim2.setAnimationListener(new AnimationListener() {
        public void onAnimationEnd(Animation animation) {

        //do on click after animation ends
        Intent intent = new Intent(LaunchActivity.this, MyDialog.class);
        startActivity(intent);  
        }

        @Override
        public void onAnimationRepeat(Animation animation) {

        }

        @Override
        public void onAnimationStart(Animation animation) {
        //change the backround of the button etc on click etc...                            
        }
    });                                     
}});