Android app restarts when opened by clicking app icon

Question

Scenario :

I open my app by clicking icon, do something, navigate through activities, pause the app by clicking home button.

Case 1:

If I

Answer 1

I found it. I had set a flag android:launchMode="singleTask" in my activity flag. I deleted that code.

I also added onsaveInstance method to all the activities in my code and it's working now!

Thanks :)