How to get Activity that paused and goes in background?

Issue

I have a situation, that when my app goes in background (not killed completely!) and last alive activity was BActivity. In this state. I receive a push notification.

When notification is clicked it should open the last activity which was opened earlier i.e., (BActivity).

Question How to open that last specific paused activity?

Is any answer like set flag or manifest configs?

Solution

If I understood correctly, you want to bring your app back to foreground after you receive a push notification? In that case, use the following code:

Intent intent = new Intent(context, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);                                                 
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
startActivity(intent);

where MainActivity is the launcher Activity that you have specified in AndroidManifest.xml.

This should bring your app to foreground in its previous state, if there ever was one, and otherwise launch MainActivity.

For an explanation see here.

Answered By - K-dari