Butter Knife- Getting null pointer when in offline but working when online

Question

I am using Butter Knife to bind view's in my app Fragment, but I am getting null point exception when the app has no internet connection but working fine when in online. Don't know why it's happening like this.. Can any one have any idea on it let me know. Thanks in advance..

This is the way I am using it in my code..

public class MyFragment extends Fragment {

    @BindView(R.id.myTextView)
    TextView myTextView;

    public MyFragment() {

    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ((AppCompatActivity) getActivity()).getSupportActionBar().setTitle("Home");

        getInfo();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.fragment_about_us, container, false);
        ButterKnife.bind(this, view);

        return view;
    }

    private void getInfo () {
        if(isOnline(getActivity())) {
        // Do some thing

        myTextView.setText("Hi");

        } else {
        // do some thing

        myTextView.setText("Hello");

        }
    }

}

Log:

FATAL EXCEPTION: main
 java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference
                                                                                at butterknife.internal.Utils.findRequiredView(Utils.java:87)
                                                                                at butterknife.internal.Utils.findRequiredViewAsType(Utils.java:104)

Answer 1

You are calling getInfo() from onCreate(), but butterknife performs the binding just in onCreateView() which is called by the system after onCreate(). So myTextView is not initialized, when you access it in getInfo().

Move getInfo() into onCreateView() after Butterknife.bind() and it should work fine.