Android Project Error when using getApplication（) for UnityPlayer ?

Hi ,in my android project ,i use "getApplication（) " to init UnityPlayer ,like this:

      // Setup activity layout
     @Override protected void onCreate (Bundle savedInstanceState)
     {
 
         requestWindowFeature(Window.FEATURE_NO_TITLE);
         super.onCreate(savedInstanceState);
 
         getWindow().takeSurface(null);
         setTheme(android.R.style.Theme_NoTitleBar_Fullscreen);
         getWindow().setFormat(PixelFormat.RGB_565);
 
         mUnityPlayer = new UnityPlayer(getApplication());
         if (mUnityPlayer.getSettings ().getBoolean ("hide_status_bar", true))
             getWindow ().setFlags (WindowManager.LayoutParams.FLAG_FULLSCREEN,
                                    WindowManager.LayoutParams.FLAG_FULLSCREEN);
 
         setContentView(mUnityPlayer);
         mUnityPlayer.requestFocus();
     }

• But it crash .and the log is quite simple :**

  dalvikvm(14086): Trying to load lib /data/app-lib/com.lioncat.test-2/libmain.so 0x437c7910

  dalvikvm(14086): Added shared lib /data/app-lib/com.lioncat.test-2/libmain.so 0x437c7910

  libc(14086): Fatal signal 11 (SIGSEGV) at 0x00000000 (code=1), thread 14086 (om.lioncat.test)

For some reason ,i have to use "getapplication" for unityplayer's context instead of "Activity" . Any help or suggestion?