title: Android : Zoom by center pinch
body: <p>So, I have ScrollView, HorizantalScrollView and BoardView for TicTacToe game. </p>
  
  <p>When user zooms, while i redraw scale into categories of cells through ScalegestureDetector zoom pinch is allocated on top, left of the screen, not at the centre of pinches, how can I allocate it to the center?</p>
  
  <p>here is my project in github: <a href="https://github.com/boyfox/TestTicTac.git" rel="nofollow">https://github.com/boyfox/TestTicTac.git</a></p>
  
  <p>Project used com.android.support:appcompat-v7</p>
  
  <p>Anybody have a solution to this problem?</p>