Android: always launch start activity when app is destroyed and recreated

Question

Lets say I have two activity, A and B. A - is my splash activity, and it also handles the initialization part. When i launch app, Activity A is started or launched and then it gets navigated to Activity B . Then i press home button , and wait for some time, for app to be destroyed. And i press my app's icon again, and my android (5.0) remebers what activity i stoped using, and launches it (activity B). and App crashes, since initialization was not occured. How to force android to start my activity A in any case?

I had also tried android:clearTaskOnLaunch="true"

I had even tried to finish() activity if it is activity B, but anyway onCreate of fragments are called, and app crashes.

Any help will be appreciated. Thanks in advance

Answer 1

Why don't you call finish(); on your Activity B's onStop() method. It could close your Activity B once the focus is off from the activity and now the app can start from Activity A again on relaunch.

May be this can help you...

Answer 2

Don't rely upon Activity A and B dependence. We do not have any control whether the OS decides to kill any of those. It might be due to battery limits or a need to free up memory.

This can be also checked with 'Dont keep Activities' developer option.

What I suggest doing is adding an if-check logic in Activity B to use the init config or init it, if not possible.

Then, you will be prepared for the case of Android killing your activity (rare case than A -> B flow, but possible).

Hence, Activity logic coupling is a no-go.