title: ImageView - implementing gestures (pinch zoom, double tap) compatible with ViewPager (just like Android Gallery)
body: <p>I was looking for an effective way to implement gestures option to ImageView with ViewPager.
  I tried some examples, but they are not working well (e.g. pinch zoom actually is not zooming where I want to).
  In my app I need pinch zooming, double tap zoom and draging zoomed image.</p>
  
  <p>What is the fastest and easiest way to make it all working well?</p>