How to select menu position when using popBackStack?

[zakiharis]

Hi, newbie here.

Let say I have 3 menus (Menu 1, Menu 2, Menu 3)

Then in onNavigationDrawerItemSelected I use addToBackStack for each menu.

After run the app, I select the Menu 2, then I hit the back button, it will show Menu 1 but drawer still highlighting Menu 2.

How to change the drawer highlight?

I know by using selectPosition, but how to get the position?

[kanytu]

You can do that on your fragment's onAttach method. This method will get called when the fragment gets attached on the view. In order to retrieve the position you will need to statically set it on each fragment. I'm afraid there is no way to retrieve the position in a simpler way.

Here is a snippet of a fragments onAttach

@Override
public void onAttach(Activity activity) {
    super.onAttach(activity);
   NavigationDrawerFragment drawer= (NavigationDrawerFragment) activity.getFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
    if(drawer!=null && drawer.getView()!=null){
        RecyclerView recyclerView = (RecyclerView) drawer.getView().findViewById(R.id.drawerList);
        if(recyclerView.getAdapter()!=null){
            ((NavigationDrawerAdapter)recyclerView.getAdapter()).selectPosition(0);
        }
    }
}

Notice the selectPosition(0). You will need to change this position to the position your fragment is taking on the menu. Hope this helps.

[marcinkolonko]

hi, but the onAttach method won't be called when the fragment is coming from the backstack... wouldn't it be better to have it in the onCreateView method?

[kanytu]

Yes you're correct. It's better to call it on onCreateView.