Question

I ve two ListFragments maganed by a tabhost. Firt time I switch between tab all is alright. The headerView is correctly added. The second time I switch between fragment I get this execption:

10-05 15:15:01.585: ERROR/AndroidRuntime(23263): java.lang.IllegalStateException: Cannot add header view to list -- setAdapter has already been called. 
10-05 15:15:01.585: ERROR/AndroidRuntime(23263):     at android.widget.ListView.addHeaderView(ListView.java:261) 
10-05 15:15:01.585: ERROR/AndroidRuntime(23263):     at android.widget.ListView.addHeaderView(ListView.java:284) 
10-05 15:15:01.585: ERROR/AndroidRuntime(23263):     at it.chiesacattolica.archive.ArchiveFragment.onActivityCreated(ArchiveFragment.java:199) 
10-05 15:15:01.585: ERROR/AndroidRuntime(23263):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:858) 
10-05 15:15:01.585: ERROR/AndroidRuntime(23263):     at android.support.v4.app.FragmentManagerImpl.attachFragment(FragmentManager.java:1183)

and the app crashes. The code I use to add the header view follows:

@Override
public void onActivityCreated(Bundle arg0) {
    super.onActivityCreated(arg0);      
    getListView().setOnScrollListener(this);
    getListView().addHeaderView(searchBox);
    setListAdapter(mAdapter);
}

what’s wrong ? thanks in advance

Answer 1

After a fleeting look at the android developers references, I’m guessing you can’t do another call to addHeaderView after you’ve set the adapter.
If there is such a thing, you can unload the adapter, add the new HeaderView and re-load the adapter. If not, all HeaderViews should be added before calling the setAdapter method.

see ListView.addHeaderView