How to spin an android icon on its center point?

Question

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.

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);     } } 

Answer 1

Try: r = new RotateAnimation(ROTATE_FROM, ROTATE_TO, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);

Answer 2

This works for me:

img = (ImageView)findViewById(R.id.ImageView01); RotateAnimation rotateAnimation = new RotateAnimation(30, 90,     Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);