Do I need to unsubscribe from observers and remove links when the activity is destroyed, or is everything done by itself?

Question

Android

And what else needs to be done when the activity is destroyed so that the garbage collector works correctly?
I sometimes hear that you need to unsubscribe observers, but what else is needed?

Answer 1

Yes, in onDestroy it is better to unsubscribe everything that has been signed up to this point. You need to release all the resources that potentially live longer than the activity.