How can I give an imageview click effect like a button on Android?

Question

I have imageview in my Android app that I am using like a button with the onClick event given, but as you might guess it is not giving imageview a clickable effect when clic

Answer 1

This worked for me:

img.setOnTouchListener(new OnTouchListener(){

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction())
                {
                    case MotionEvent.ACTION_DOWN:
                    {
                        ((ImageView)v).setImageAlpha(200);
                        break;
                    }
                    case MotionEvent.ACTION_MOVE:
                    {
                        // if inside bounds
                        if(event.getX() > 0 && event.getX() < v.getWidth() && event.getY() > 0 && event.getY() < v.getHeight())
                        {
                            ((ImageView)v).setImageAlpha(200);
                        }
                        else
                        {
                            ((ImageView)v).setImageAlpha(255);
                        }

                        break;
                    }
                    case MotionEvent.ACTION_UP:
                    {
                        ((ImageView)v).setImageAlpha(255);
                    }
                }
                return true;
            }

        });

@Edit: As Gunhan said there will be backward compatibility problem with setImageAlpha method. I used this method:

public static void setImageAlpha(ImageView img, int alpha)
    {
        if(Build.VERSION.SDK_INT > 15)
        {
            img.setImageAlpha(alpha);
        }
        else
        {
            img.setAlpha(alpha);
        }
    }