Working with two fragments, getting error: Content has view with id attribute 'android.R.id.list' that is not a ListView class

Question

Edit (19/4) I'm attaching a dropbox link, because the first error was fixed, but still the app crashes without a reason, it goes from the looper to the ZygotInit to kill the app, But I can't seem to find the reason nor the logcat gives any... https://www.dropbox.com/sh/2hrzqk9jnrlro0m/471jspyoCl

EDIT: The fragment_news_feed.xml: is the problematic one below... The ListFragment is pretty long since it also contains asynctask, attching only the overrides:

View feedView;
ListView mRssFeed;
ArrayAdapter<String> rssListAdapter;
List<String> rssItemList;

public NewsFeed() {
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Read in the flag indicating whether or not the user has demonstrated awareness of the
    // drawer. See PREF_USER_LEARNED_DRAWER for details.
    SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
    //mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);

    if (savedInstanceState != null) {
        //mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
        //mFromSavedInstanceState = true;
    }

    rssItemList = new ArrayList<>();
    rssItemList.add("T");
    rssListAdapter = new ArrayAdapter<>(getActivity(), R.layout.fragment_news_feed, R.id.item, rssItemList);

    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);
}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    // Indicate that this fragment would like to influence the set of actions in the action bar.
    setHasOptionsMenu(true);
    mRssFeed = getView().getListView();
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    feedView = inflater.inflate(R.layout.fragment_news_feed, container, false);
    //mRssFeed = getView().getListView();
    /*String rss = "";
    try {
        rss = getRssFeed();
        rssItemList.clear();
        rssItemList.add(rss);
        rssListAdapter.add(rss);
        mRssFeed.setAdapter(rssListAdapter);
    }
    catch (Exception ex) {
        Log.w("My News", "Exception Caught: " + ex.toString());
    }*/
    return feedView;
}

@Override
public void onStart() {
    super.onStart();
    new GetRssFeedTask().execute();
}

ORIGINAL: I'm writing a little application, with two fragments (one Fragment and one ListFragment) and two layouts (one of them is in one of the fragments).

The First fragment is:

<ListView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:choiceMode="singleChoice"
    android:divider="@android:color/transparent"   
    android:dividerHeight="0dp"
    android:background="#cccc"
    tools:context="com.kfir.bs.mynews.mynews.NavigationDrawerFragment" />

With onCreateView that works fine!!

The problematic fragment is the layout:

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.kfir.bs.mynews.mynews.NewsFeed$PlaceholderFragment">

    <ListView
        android:id="@+id/feedlist"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >
    </ListView>

</RelativeLayout>

the onCreateView for the second fragment is:

 @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        feedView = inflater.inflate(R.layout.fragment_news_feed, container, false);
        mRssFeed = (ListView) feedView.findViewById(R.id.feedlist);
        // TODO here I need to reed the RSS and inflate the list with data
        String rss = "";
        try {
            rss = getRssFeed();
            rssItemList.clear();
            rssItemList.add(rss);
            rssListAdapter.add(rss);
            mRssFeed.setAdapter(rssListAdapter);
        }
        catch (Exception ex) {
            Log.w("My News", "Exception Caught: " + ex.toString());
        }
        return feedView;
    }

I'm working with Android Studio, with gradle. The build is smooth as butter,BUT... when I run the app, when it gets to the secong onCreateView (shown above), The application cllapses with runTime Exeption Error:

java.lang.RuntimeException: Content has view with id attribute 'android.R.id.list' that is not a ListView class

Although I got my layout inflated, and the list taken care of, I still get the exception.

What can be the problem?

Thanks i nadvance, K.

Answer 1

You need to change this

android:id="@+id/feedlist"

to

android:id="@android:id/list"

In onActivityCreated

mRssFeed = getView().getListView();

Or change

extends ListFragment 

to

extends Fragment

Keep the rest the same.