android - Safest approach for holding an instance of Activity -

what best , safer approach holding instance of activity

private activity mactivity; 

first approach:

 @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      mactivity = getactivity(); } 

second approach:

@override public view oncreateview(layoutinflater inflater, @nullable viewgroup container, @nullable bundle savedinstancestate) {     view view = inflater.from(getactivity()).inflate(r.layout.fragment_main, container, false);      mactivity = (activity) view.getcontext();      return view; } 

well, depends. advice use getactivity().

you can use after onattach(activity activity). if @ fragmentmanager source code, can see there, mactivity field of fragment set before calling onattach.

but have careful, activity not initialized (views,..) before onactivitycreated gets called.