Android-Activity-lifecycle-saveing-states

Activity生命周期和维持状态

https://developer.android.com/topic/libraries/architecture/saving-states?hl=zh-cn#use_onsaveinstancestate_as_backup_to_handle_system-initiated_process_death

https://developer.android.com/guide/components/activities/activity-lifecycle?hl=zh-cn#save-simple,-lightweight-ui-state-using-onsaveinstancestate

https://developer.android.com/jetpack/docs/guide?hl=zh-cn#drive-ui-from-model