[android-porting] Sub-activity failing

[HV]

Hi,

 I have an Activity class that is calling another Activity class which is 
trying to launch an app (using Intent), but I'm seeing a crash right now. 
any ideas what could be the issue? Here is the crash log:

E/SubAct  ( 2978): SubAct::SubAct, Enter...
E/SubAct  ( 2978): SubAct::StartApp, Calling startActivity...
D/AndroidRuntime( 2978): Shutting down VM
W/dalvikvm( 2978): threadid=1: thread exiting with uncaught exception 
(group=0x6e3a71f8)
E/AndroidRuntime( 2978): FATAL EXCEPTION: main
E/AndroidRuntime( 2978): java.lang.NullPointerException
E/AndroidRuntime( 2978):        at 
android.app.Activity.startActivityForResult(Activity.java:3190)
E/AndroidRuntime( 2978):        at 
android.app.Activity.startActivity(Activity.java:3297)
E/AndroidRuntime( 2978):        at 
com.broadcom.sockserver.SubAct.StartApp(SubAct.java:53)
E/AndroidRuntime( 2978):        at 
com.broadcom.sockserver.SockServer$1.handleMessage(SockServer.java:48)
E/AndroidRuntime( 2978):        at 
android.os.Handler.dispatchMessage(Handler.java:95)
E/AndroidRuntime( 2978):        at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime( 2978):        at 
android.app.ActivityThread.main(ActivityThread.java:4424)
E/AndroidRuntime( 2978):        at 
java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 2978):        at 
java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 2978):        at 
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
E/AndroidRuntime( 2978):        at 
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
E/AndroidRuntime( 2978):        at dalvik.system.NativeStart.main(Native 
Method)

My code snippet:
*****
public class SockServer extends Activity 
{
...
    Handler mHandler = new Handler(new Handler.Callback()
    {
        @Override
        public boolean handleMessage(Message msg)
        {
            Log.e(TAG, "msg.what = " +msg.what);

            if (msg.what == 1)
            {
                ABApp = new SubAct();
                ABApp.StartApp();
            }
        
            else if (msg.what == 2)
            {
                ABApp.StopApp();
            }            

            return true;
        }
    });

*****
public class SubAct extends Activity
{
    public Intent MyIntent;
    public int iReqCode;
    public String TAG = "SubAct";

    public SubAct()
    {
        Log.e(TAG, "SubAct::SubAct, Enter...");

        MyIntent = new Intent();

        MyIntent.setAction(Intent.ACTION_VIEW);
        MyIntent.setClassName("com.rovio.angrybirds", "com.rovio.ka3d.App");
        iReqCode = 10;
    }

    public void StartApp()
    {
        Log.e(TAG, "SubAct::StartApp, Calling startActivity...");
        startActivity(MyIntent);
    }
****

Instead of calling  SubAct, if I just use my Intent code in SockServer, it 
will launch AngryBirds (but calling finish is not stopping AB). The only 
reason I'm using the SubAct, is so that I can call finish/finishActivity & 
I'm expecting that will kill AB. 

Thanks for any tips
HV

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