Use roboguice out of roboactivity

Question

I've a roboactivity where I inject some stuff like resources and views. I use some fragment classes in my app. These fragments have to extend Fragment. Here is my stuff:

When a button is pressed I make a new fragment:

FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

fragmentTransaction.replace(R.id.content_frame,Fragment.instantiate(this,fragments[position]));
fragmentTransaction.commit();

My fragment looks like this:

public class MyLists extends Fragment {
    @InjectView(R.id.myview)
    private TextView myview;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {      
        ViewGroup root = (ViewGroup) inflater.inflate(R.layout.my_lists_fragment, null);

        MyRepo repo= new MyRepo ();

        myview.setText(repo.getSomething());
        return root;
    }
}

The InjectView isn't working. I can't find the reason why it wont work. Can anybody help me solving this?

weston · Accepted Answer · 2014-05-24T16:55:17.313

Injection happens during onViewCreated which is after onCreateView. Move your code to onViewCreated.

On an Activity there is setContentView where injection can take place. On a fragment, you return the view so robojuice can't know to use that for injection until later.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {      
    ViewGroup root = (ViewGroup) inflater.inflate(R.layout.my_lists_fragment, null);
    // Here you've inflated something, but robojuice has no way of knowing
    // that's the fragments view at this point, and no base method has been called
    // that robojuice might use to find your View.
    // So myview is still null here:
    myview.setText(repo.getSomething());
    return root;
}

Use roboguice out of roboactivity

1 Answers1