java.lang.NoSuchMethodException for onCreate

Question

I see crashes in the Google Play crash log that is really stumping me.

java.lang.RuntimeException: 
  at android.app.ActivityThread.performLaunchActivity (Ac         


        

Answer 1

After some search i finally fix the issue. You have to check 3 things.

1. You should have a 0-arg constructor in the fragment, best practice is to do something like bellow
2. If you are using callback in the caller, you have to check if getContext is null or not (otherwise you will get a NullPointerException)
3. Don't forget to test the case when the screen orientation change, this will allow you to reproduce some potential issue due to restoring fragment state

Sample code example :

    public class MyDialogFragment extends DialogFragment{
     private String id;

     public static MyDialogFragment newInstance(String id) {
        MyDialogFragment f = new MyDialogFragment ();

        Bundle args = new Bundle();
        if(id!= null){
            args.putString("id", id);
        }
        f.setArguments(args);

        return f;
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if(savedInstanceState != null){
            id= savedInstanceState.getString("id");
        }
    }
    }