How to use Android Map to zoom with hand gesture (iphone like)

Question

How do you use the Android API to zoom in and out maps with the 2 finger gestures like iPhone?

Answer 1

You need to override the MapActivity's OnTouchEvent() with something like this:

@Override
public boolean onTouchEvent(final MotionEvent event)
{
    if(event.getPointerCount() > 1)
    {
        int x1 = event.getX(0);
        int y1 = event.getY(0);
        int x2 = event.getX(1);
        int y2 = event.getY(1);

        // Get the distance and see how it compares to the previous
        // distance between these two pointers
    }
    return true;
}