Introduction about Fragments and their intercommunication mechanism
void onActivityCreated(Bundle savedInstanceState) // Called when the fragment's activity has been created and this fragment's view hierarchy instantiated.
void onActivityResult(int requestCode, int resultCode, Intent data) // Receive the result from a previous call to startActivityForResult(Intent, int).
void onAttach(Activity activity) // This method was deprecated in API level 23. Use onAttach(Context) instead.
void onAttach(Context context) // Called when a fragment is first attached to its context.
void onAttachFragment(Fragment childFragment) // Called when a fragment is attached as a child of this fragment.
void onConfigurationChanged(Configuration newConfig) // Called by the system when the device configuration changes while your component is running.
void onCreate(Bundle savedInstanceState) // Called to do initial creation of a fragment.
View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) // Called to have the fragment instantiate its user interface view.
void onDestroy() // Called when the fragment is no longer in use.
void onDestroyView() // Called when the view previously created by onCreateView(LayoutInflater, ViewGroup, Bundle) has been detached from the fragment.
void onDetach() // Called when the fragment is no longer attached to its activity.
void onInflate(Activity activity, AttributeSet attrs, Bundle savedInstanceState) // This method was deprecated in API level 23. Use onInflate(Context, AttributeSet, Bundle) instead.
void onInflate(Context context, AttributeSet attrs, Bundle savedInstanceState) // Called when a fragment is being created as part of a view layout inflation, typically from setting the content view of an activity.
void onPause() // Called when the Fragment is no longer resumed.
void onResume() // Called when the fragment is visible to the user and actively running.
void onSaveInstanceState(Bundle outState) // Called to ask the fragment to save its current dynamic state, so it can later be reconstructed in a new instance of its process is restarted.
void onStart() // Called when the Fragment is visible to the user.
void onStop() // Called when the Fragment is no longer started.
void onViewStateRestored(Bundle savedInstanceState) // Called when all saved state has been restored into the view hierarchy of the fragment.
A Fragment represents a behavior or a portion of user interface in an Activity. You can combine multiple fragments in a single activity to build a multi-pane UI and reuse a fragment in multiple activities. You can think of a fragment as a modular section of an activity, which has its own lifecycle, receives its own input events, and which you can add or remove while the activity is running (sort of like a "sub activity" that you can reuse in different activities).