通过意图切换到另一个活动时如何销毁一个活动？

Question

I have 3 activities A, B and C. Activity A has a button which when clicked takes me to Activity B. Activity B has a button which when clicked takes me to Activity C. When I click on button in Activity A it takes me to Activity B but Activity A is paused and not destroyed and the same happens when I click Activity B's button and go to acitivty C. I tried using finish() on activity B, but the problem is when I press the back button in activity C it goes directly to Activity A. What I want is when I click Activity B's button it should destroy Acitivity B and take me to Acitivity C and in Activity C, if I press back button it should take me to newly created activity B

Activity A -> Activity B-> Activity C

Answer 1

You'll be working against the Android framework. That leads to frustrations. Instead, when you go to activity C, don't finish activity B. Instead, in activity B in onResume(), do something based on the fact that you went to activity C. Or starting Activity C using startActivityForResult() may be appropriate.

Edited

The problem is updating the UI after something changed in activity C. The best place to do that in activity B is in the onResume(). Put the logic for updating the UI in onResume() instead of in onCreate(). When an activity is created, onCreate() is invoked, and onResume() is also invoked.