在fragment中获取Application数据

public class MyApplication extends Application {    public int getColorCount() {        return 1;    }}

public class TestFragment extends Fragment {    @Override    public void onActivityCreated(Bundle savedInstanceState) {        super.onActivityCreated(savedInstanceState);        int test = ((MyApplication) getActivity().getApplication()).getColorCount();        Log.d("testfrag", "" + test);    }

Make sure you only try to access Activity during or after onActivityCreated.