unable to start activity componentinfo
问题 my program is not working , i have some kind of a problem with the surfaceviewexample class . Unable to start activity java.lang.NullPointerException. i am trying to push on the tut5 button which i made to start my surfaceview. what is the reason for it ? what am i doing wrong ? SurfaceViewExample.java public class SurfaceViewExample extends Activity implements View.OnTouchListener{ OurView v; Bitmap ball; float x,y; @Override protected void onCreate(Bundle savedInstanceState){ super.onCreate