Android getSupportFragmentManager NULL pointer exception in Fragment

Question

i\'m trying to display new fragment with TabBar and View Pager after click on the Navigation drawer item.

Problem is that newly created Fragment is causing NULL poin

Answer 1

change:

mAdapter = new TabsPagerAdapter(getActivity().getSupportFragmentManager())

to:

 mAdapter = new TabsPagerAdapter(getChildFragmentManager())

when you are using fragment inside another fragment you must use ChildFragmentManager not FragmentManager.