title: android cannot use GestureListener on scrollview
body: <p>In my android app, I have a linear layout. Inside it, there is a scrollview that contain a multiple line textview.</p>
  
  <p>I try to add a GestureListener to add the ability to flig left to right to scroll the scrollview to next page, but I find that the GestureListener cannot capture the flip action.</p>
  
  <p>How can I implement above behaviour? thanks</p>