Get button coordinates and detect if finger is over them - Android

Question

I have 4 buttons in my android app activity. This is what it looks like:

As yo

Answer 1

getX() getY() for a OnTouchListener give coordinates relative the the cooresponding view.

If you prefer screen coordinates instead you can use one of the following

• overwrite onTouchEvent for the activity and remove OnTouchListener-s for buttons, in which case MotionEvent will report screen coordinates instead of Button coordinates

     @Override 
     public boolean onTouchEvent (MotionEvent event) {
         xcordview.setText(String.valueOf(event.getX()));
         ycordview.setText(String.valueOf(event.getY()));
         return true;
     }
  

• use getTop() getLeft() in OnTouchListener for a button:

    touchview.setOnTouchListener(new View.OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
          xcordview.setText(String.valueOf(event.getX()+v.getLeft()));
          ycordview.setText(String.valueOf(event.getY()+v.getTop()));
          return true;
      }
  });
  

You may consider using GestureDetector to detect swipes, however it isn't really necessary.