What is the lifecycle of a fragment in Android?

The lifecycle of a fragment is closely related to the lifecycle of the activity to which it is attached.

Main states and corresponding callback methods:

• onAttach(): The fragment is attached to an activity.
• onCreate(): The fragment is created.
• onCreateView(): The fragment's view hierarchy is created.
• onViewCreated(): The view hierarchy is created, views are available.
• onActivityCreated(): The activity containing the fragment is created.
• onStart(): The fragment becomes visible to the user.
• onResume(): The fragment becomes active and gains user focus.
• onPause(): The fragment loses focus but is still visible.
• onStop(): The fragment becomes invisible.
• onDestroyView(): The fragment's view hierarchy is destroyed.
• onDestroy(): The fragment is destroyed.
• onDetach(): The fragment is detached from the activity.

Transition diagram:

onAttach() -> onCreate() -> onCreateView() -> onViewCreated() -> onActivityCreated() -> onStart() -> onResume()
onResume() -> onPause() -> onStop() -> onDestroyView() -> onDestroy() -> onDetach()
onStart() -> onStop() -> onDestroyView() -> onDestroy() -> onDetach()
onPause() -> onResume()
onStop() -> onRestart() (not directly for fragment) -> onStart()