How can my view respond to a mousewheel?

Question

I have a view with an onTouch that can distinguish between touch input and left/middle/right mouse clicks, as in

@Override
public boolean onTouc         


        

Answer 1

The accepted answer was a document link that led me to the example code in the question, but that answer was deleted. So that this question no longer appears 'unanswered', this is how your view can respond to a mousewheel:

@Override
public boolean onGenericMotionEvent(MotionEvent event) {
  if (0 != (event.getSource() & InputDevice.SOURCE_CLASS_POINTER)) {
    switch (event.getAction()) {
      case MotionEvent.ACTION_SCROLL:
        if (event.getAxisValue(MotionEvent.AXIS_VSCROLL) < 0.0f)
          selectNext();
        else
          selectPrev();
        return true;
    }
  }
  return super.onGenericMotionEvent(event);
}

Answer 2

The mouse wheel event action is considered a scroll event