title: Android ViewPager Detect Vertical Swipe
body: <p>I would like to allow the ViewPager to swipe normally to the right/left as it is and detect Vertical Flings. I tried to assign a <code>GestureDetector</code> but the problem is that returning <code>true</code> from the method <code>public boolean onDown(MotionEvent e)</code> disables the normal horizontal swiping of the ViewPager. Any ideas how to allow both?</p>