Similiar to this this issue, i was trying to access and manipulate a second fragment that was created in the first fragment, before i realized that the nullpointerException is most probably caused by the nonready state of the second fragment. So is this generally not possible and i have to do something like passing a bundle with the data?
That works:
MyMap mapFragment = new MyMap();
getActivity().getSupportFragmentManager().beginTransaction()
.add(R.id.frame,mapFragment,"map")
.commit();
but this gives me a null reference:
MyMap mapFragment = (MyMap)getActivity().getSupportFragmentManager().findFragmentById(R.id.map);
