Zoomable TextView in ScrollView

Question

I would like to make a TextView that can change the size of it's text based on pinch zooming. The TextView is inside a ScrollView. I've got the TextView to zoom when pinching BUT only when you move your fingers almost perfectly horizontally. If there is a vertical component to the pinch-zoom it defaults to scrolling instead of zooming

Is there a way to disable the scrolling of the ScrollView when there is more than 1 pointer on it then re-enable scrolling when the pointer count returns to 1 or 0? Is the best way to create a CustomScrollView widget or is there an easier way?

Answer 1

I think it is simpler to use:

   textView.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent event) {
            // TODO Auto-generated method stub
            if(event.getPointerCount() == 1) {
                Log.d("Scroll","1-pointer touch");
                v.getParent().requestDisallowInterceptTouchEvent(false);

            }
            if(event.getPointerCount() == 2){
                Log.d("Zoom","2-pointer touch");
                v.getParent().requestDisallowInterceptTouchEvent(true);

            }
            return false;
        }
    });