Like Activity , Fragment also has the lifecycle. It works in much same way like activity lifecycle.
- onAttach(Activity) called once the fragment is associated with its activity. telling that this fragment is attached to some activity. You can use that activity object to load resources because the activity is derived from context and Context can access the resource available.
- onCreate(Bundle) called to do initial creation of the fragment. Loading of fragment.
- onCreateView(LayoutInflater, ViewGroup, Bundle) creates and returns the view hierarchy associated with the fragment.
- onActivityCreated(Bundle) tells the fragment that its activity has completed its own Activity.onCreate().
- onViewStateRestored(Bundle) tells the fragment that all of the saved state of its view hierarchy has been restored.
- onStart() makes the fragment visible to the user (based on its containing activity being started).
- onResume() makes the fragment interacting with the user (based on its containing activity being resumed).
As a fragment is no longer being used, it goes through a reverse series of callbacks:
- onPause() fragment is no longer interacting with the user either because its activity is being paused or a fragment operation is modifying it in the activity.
- onStop() fragment is no longer visible to the user either because its activity is being stopped or a fragment operation is modifying it in the activity.
- onDestroyView() allows the fragment to clean up resources associated with its View.
- onDestroy() called to do final cleanup of the fragment's state.
- onDetach() called immediately prior to the fragment no longer being associated with its activity.
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