android - Radio Buttons in a Fragment causing crash

Question

This crashes when the fragment has launched. Could it be in the radio-button code?

    RadioGroup q1;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        q1 = (RadioGroup) getView().findViewById(R.id.radioGQ1);
        q1.setOnCheckedChangeListener(this);
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_exercise, container, false);

    }
    rest -> http://pastebin.com/cRptSmD4

Answer 1

You need to inflate the views first.

View root = inflater.inflate(R.layout.fragment_exercise, container, false);
q1 = (RadioGroup) root.findViewById(R.id.radioGQ1);
q1.setOnCheckedChangeListener(this);
return root;

getView() returns null until you have returned a view hierarchy from onCreateView(), so you should not be calling getView() inside that method.

Answer 2

The Context of Fragment is getActivity, if you are not initializing any view, use getActivity(). So in your code:

Replace this:

q1 = (RadioGroup) getView().findViewById(R.id.radioGQ1);

With this code:

q1 = (RadioGroup) getActivity().findViewById(R.id.radioGQ1);