title: "Zoom In/out " image on Button Click in Android?
body: <p>I am newbie in Android.I have followed this Question and i successfully zoom an image this code is working fine can someone please help me how to write code for zoomin zoomout on button click.I am not getting how to achieve this task </p>
  
  <p>Here is the Tutorial that i followed  <a href="http://asmncl.blogspot.com/2012/04/android-zoominzoomout-imageview.html?showComment=1390490924149" rel="nofollow noreferrer">Tutorial Zoom Image</a> and also follow "<a href="https://stackoverflow.com/questions/21312718/failed-to-display-zoom-image-and-other-contents-on-same-ui-in-android">Salman's Ayub Answer</a>"</p>
  
  <p>Its working fine but i am failed to apply scale factor on zoom in and zoom out of image</p>