как правильно написать загрузку данных через SharedPreferences на фрагменте?

public class mainFragment extends Fragment {

    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";
    private  static main c_main;
    final String SAVED_TEXT = "saved_text";
    ImageView image_avatar;
    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;




    public mainFragment() {
        // Required empty public constructor
    }

    /**
     * Use this factory method to create a new instance of
     * this fragment using the provided parameters.
     *
     * @param param1 Parameter 1.
     * @param param2 Parameter 2.
     * @return A new instance of fragment mainFragment.
     */
    // TODO: Rename and change types and number of parameters
    public static mainFragment newInstance(String param1, String param2) {
        mainFragment fragment = new mainFragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        if (getArguments() != null) {
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);

        }

        loadText();

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_main, container, false);
    }
    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        image_avatar=(ImageView)getView().findViewById(R.id.image_avatar);
    }
    public void loadText() {
        SharedPreferences preferences = this.getActivity().getSharedPreferences("MyData", Context.MODE_PRIVATE);
        String savedText = preferences.getString(SAVED_TEXT, "");
        Picasso.with(this.getActivity()).load(savedText).into(image_avatar);

        Log.d( "Text loaded", "загружено");
    }


}