ListView in Fragment vs ListFragment

Question

I am trying to use ViewPager to implement a sliding system between a couple fragments I have. I have 2 fragments and 1 listfragment. How would I go about populating the viewpager with both of these types of fragments? Or would it be easier to implement a ListView in the fragment so I have 3 fragments?

I'm sorry I wasn't clear enough. I have 3 Fragments: 2 classes extend 'Fragment' while the third extends 'ListFragment'. In my ViewPagerActivity, when I am adding my fragments to a list:

public class PageViewActivity extends FragmentActivity {
MyPageAdapter pageAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    List<Fragment> fragments = getFragments();

    pageAdapter = new MyPageAdapter(getSupportFragmentManager(), fragments);

    ViewPager pager = (ViewPager)findViewById(R.id.viewpager);
    pager.setAdapter(pageAdapter);

}

private List<Fragment> getFragments(){
    List<Fragment> fList = new ArrayList<Fragment>();

    fList.add(MainActivity.newInstance());
    //fList.add(MainActivity.newInstance("Fragment 1"));
    //fList.add(MyFragment.newInstance("Fragment 2"));
    //fList.add(MyFragment.newInstance("Fragment 3"));

    return fList;
}

}

I am getting an error at the line:

fList.add(MainActivity.newInstance());

Which is my ListFragment class (I know MainActivity throws it off but it is my ListFragment class). My listfragment class:

public class MainActivity extends ListFragment {

private List<ListViewItem> mItems;

public static MainActivity newInstance()
{
    MainActivity f = new MainActivity();
    Bundle bdl = new Bundle(1);
    f.setArguments(bdl);
    return f;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //setContentView(R.layout.activity_main);
    mItems = new ArrayList<ListViewItem>();
    Resources resources = getResources();
    setListAdapter(new ListViewAdapter(getActivity(), mItems));

}


@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    // remove the dividers from the ListView of the ListFragment
    getListView().setDivider(null);
}

}

Basically, it is giving me an error because I am passing in newInstance of ListFragment but the List type is Fragments. I didn't think there should be a problem because ListFragment is a subclass of Fragment.

Error: add(android.support.v4.app.Fragment) in list cannot be applied to /MainActivity

This is why I am not sure if I should use a fragment+listview to overcome this error.

Answer 1

Maybe your Fragment is from support library but the ViewPager is expecting the standard Fragment