Question

I have a widget for my application, which need to be somewhat independent from the app.

The activity workflow should be like this:

Widget -> Activity acting as receiver

Receiver -> LoginPage or Activity A (depending on login status)

LoginPage -> Activity A

Activity A onKeyDown -> Activity B

Activity B onKeyDown -> Home Screen.

I have no problem until Activity B, which sends back to Activity A when I press onKeyDown. I’m using FLAG_ACTIVITY_CLEAR_TOP flag and finishing the Activity when starting the activity B.

When I move from ActivityA to ActivityB using the CLEAR_TOP flag, I supposed that Activity stack is cleared, then in ActivityB I finish the Activity on the onKeyDown() method, assuming that the App will be closed, but it doesnt. Why?

I’m also trying to use FLAG_ACTIVITY_CLEAR_TASK and FLAG_ACTIVITY_NEW_TASK in the receiver but I dont understand the mechanism pretty much. Any idea about this?

Answer 1

In fact the FLAG_ACTIVITY_CLEAR_TOP, start your activity B if its not started or it came back as the second activity on the BackStack. To finish Activity A, you can call finish() after starting Activity B or add no history flag, when starting A.