life cycle

This app demos the life cycle of activity, fragment and view.

Activity

1. launch new activity:

onCreate() -> onStart() -> onResume()

2. destroy an activity:

onPause() -> onStop() -> onDestroy()

3. resume activity:

onStart() -> onResume()

4. pause activity:

onPause() -> onStop()

5. click back button (destroy)

onPause() -> onStop() -> onDestroy()

6. click home button (pause)

onPause() -> onStop()

7. click overview button (pause)

onPause() -> onStop()

Fragment

1. create new fragment

onAttach() -> onCreat() -> onCreateView() -> onViewCreated() -> 
onActivityCreated() -> onViewStateRestored() -> onStart() -> onResume()

2. delete a fragment

onPause() -> onStop() -> onDestroyView() -> onDestroy() -> onDetach()

3. Fragment's lifecycle is tied to its owning activity

4. Activity's lifecycle is not tied to its child fragments

Custom view

1. create new view

onFinishInflate() -> onAttachedToWindow()

2. destroy a view

onDetachedFromWindow()