If system kill app activity, onDestroy() may be will not cause, therefore onDestroyed will not cause too, therefore view link will be not null, and we will have memory leak.
@kratos23 all view references in AbstractPresenter and_ViewDelegate have been stored as WeakReference. Also in presenter, the view reference will be set to null on onViewDetached
Offical Guide
If system kill app activity, onDestroy() may be will not cause, therefore onDestroyed will not cause too, therefore view link will be not null, and we will have memory leak.