AndroidJUnitRunner cannot create ActivityUnitTestCase's target activity about android-test-kit HOT 3 OPEN

Please see 
https://code.google.com/p/android-test-kit/wiki/AndroidJUnitRunnerUserGuide#Inst
rumentation_Thread_Handlers

Basically the new AndroidJUnitRunner prevents any Handler from being created on 
the Instrumentation worker thread. ActivityUnitTestCase.startActivity() needs 
to be called on the main thread. There are several ways to do this:

1. Use Instrumentation's runOnMainSync()
getInstrumentation().runOnMainSync(new Runnable() {
    @Override
    public void run() {
        activity = startActivity(new Intent(Intent.ACTION_MAIN), null, null);
    }
});

2. Create your own base class that extends ActivityUnitTestCase<T extends 
Activity> and override startActivity

@Override
protected T startActivity(final Intent intent, final Bundle savedInstanceState,
        final Object lastNonConfigurationInstance) {
    return startActivityOnMainThread(intent, savedInstanceState, lastNonConfigurationInstance);
}

private T startActivityOnMainThread(final Intent intent, final Bundle 
savedInstanceState,
        final Object lastNonConfigurationInstance) {
    final AtomicReference<T> activityRef = new AtomicReference<>();
    final Runnable activityRunnable = new Runnable() {
        @Override
        public void run() {
            activityRef.set(YourBaseActivityUnitTestCase.super.startActivity(
                    intent, savedInstanceState, lastNonConfigurationInstance));
        }
    };

    if (Looper.myLooper() != Looper.getMainLooper()) {
        getInstrumentation().runOnMainSync(activityRunnable);
    } else {
        activityRunnable.run();
    }

    return activityRef.get();
}

You would extend your base test class instead of ActivityUnitTestCase directly

3. If you call startActivity() in a test method and your entire test can run on 
the main thread, you can simply annotate your test method with @UiThreadTest.


Hope this helps.

Thank you very much for your response! You saved my day!
I tried all 3 techniques, from 3 > 1 > 2. At first, I was a bit bummed out 
because 3 did not work. But luckily 1 & 2 was a success!

Thank you mhernan...!

Anyone have success doing this with launchActivity as well?