android new task and activity stack issue

1. I have my launcher activity (A) set to "singleTop".

2. Now there is something in notification bar. User clicks on it. So I start activity in receiver with

   I开发者_如何学编程ntent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK

3. So A's onNewIntent is invoked and I start activity C based on extras in intent.

4. User go back to A(back key) and to other activity D. And then home key.

5. Now when I long press home. And relaunch my application and step 3 repeats. and user goes to C. where actually user should have gone to D

Somehow , when you press Long home and restart the activity , the extras parameters are lost.Only the data parameter is preserved.

Add android:launchMode="singleInstance" in Activity D (in the menifest file). And then check the app behaviour.