title: How to spin an android icon on its center point?
body: <p>I have written the following to spin my icon on the center of the screen and instead it rotates around the upper-left corner (i.e., origin x=0, y=0 of the ImageView).  It should be simple to set some attributes of the ImageView or the RotateAnimation, but I can't figure it out.</p>
  
  <pre><code>public class IconPromoActivity extends Activity {
      private static final float ROTATE_FROM = 0.0f;
      private static final float ROTATE_TO = -10.0f * 360.0f;// 3.141592654f * 32.0f;
  
      /** Called when the activity is first created. */
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.main);
  
          ImageView favicon = (ImageView) findViewById(R.id.favicon);
  
          RotateAnimation r; // = new RotateAnimation(ROTATE_FROM, ROTATE_TO);
          r = new RotateAnimation(ROTATE_FROM, ROTATE_TO, 0, 0, 40, 0);
          r.setDuration((long) 2*1500);
          r.setRepeatCount(0);
          favicon.startAnimation(r);
      }
  }
  </code></pre>