android - rotate image by 360 degrees using ontouch -

i want rotate image 360 degrees using ontouch. code had used maximum rotation getting 120 degrees. code had used

this code in ontouch event

case motionevent.action_move:     newrot = rotation(event);     float r = newrot - d;     matrix.postrotate(r, view.getmeasuredwidth()/ 2, view.getmeasuredheight()/ 2); 

and rotation method

private float rotation(motionevent event) {     double delta_x = (event.getx(0) - event.getx(1));     double delta_y = (event.gety(0) - event.gety(1));     double radians = math.atan2(delta_y, delta_x);      log.v("", "=================xxxxxxxxxxxvvvxx==============" + math.todegrees(radians));     return (float) math.todegrees(radians); } 

with code getting 120 degrees rotation on both clockwisw , anti-clockwise. please suggest me, did need change in code or working code.

this method might works me.

public static bitmap rotate(bitmap b, int degrees) {     if (degrees != 0 && b != null) {         matrix m = new matrix();          m.setrotate(degrees, (float) b.getwidth() / 2,                 (float) b.getheight() / 2);         try {             bitmap b2 = bitmap.createbitmap(b, 0, 0, b.getwidth(),                     b.getheight(), m, true);             if (b != b2) {                 b.recycle();                 b = b2;             }         } catch (outofmemoryerror ex) {             throw ex;         }     }     return b; }