Activity memory leak caused by anonymous threads

[cuixiaoyiyi]

An anonymous inner class will hold a reference to the this pointer of the outer class and will not be released until the thread ends.

They will hold the Activity and prevent its timely release. Please check the Runnables and Threads below.

https://github.com/nextcloud/android/blob/master/app/src/main/java/com/owncloud/android/ui/activity/UserInfoActivity.java#L315 https://github.com/nextcloud/android/blob/master/app/src/main/java/com/owncloud/android/ui/activity/DrawerActivity.java#L1151 https://github.com/nextcloud/android/blob/master/app/src/main/java/com/owncloud/android/ui/activity/NotificationsActivity.java#L225 https://github.com/nextcloud/android/blob/master/app/src/main/java/com/owncloud/android/ui/activity/DrawerActivity.java#L822 https://github.com/nextcloud/android/blob/master/app/src/main/java/com/owncloud/android/ui/activity/PassCodeActivity.java#L414 https://github.com/nextcloud/android/blob/master/app/src/main/java/com/owncloud/android/ui/activity/ConflictsResolveActivity.java#L193 https://github.com/nextcloud/android/blob/master/app/src/main/java/com/owncloud/android/ui/activity/SettingsActivity.java#L811