XML : ListFragment Content must contain listview android.R.id.list

I have checked other questions but i don't know what i am doing wrong. I have android:id="@+id/list" and i am calling the right layout but still It gives an error saying, it must contain listview with id ...... fragment_contacts_list xml.

  <android.support.v7.widget.RecyclerView       xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:app="http://schemas.android.com/apk/res-auto"  xmlns:tools="http://schemas.android.com/tools"  android:id="@+id/list"  android:name="com.example.umerasif.chattris.ContactsFragment"  android:layout_width="match_parent"  android:layout_height="match_parent"   android:layout_marginLeft="16dp"  android:layout_marginRight="16dp"  app:layoutManager="LinearLayoutManager"  tools:context="com.example.umerasif.chattris.ContactsFragment"  tools:listitem="@layout/fragment_contacts" />    

fragment_contacts.xml's code.

      <?xml version="1.0" encoding="utf-8"?>      <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="80dp"  android:orientation="horizontal"  android:weightSum="1"  android:gravity="bottom">      <ImageView      android:layout_width="100dp"      android:layout_height="80dp"      android:id="@+id/image"      android:contentDescription="@string/Description" />    <TextView      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:textAppearance="?android:attr/textAppearanceMedium"      android:id="@+id/name"      android:text="blabla"      android:gravity="top" />    <TextView      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:id="@+id/phone"      android:text="blabalabab" />    

and Code for my ListFragment.

      public class ContactsFragment extends ListFragment {  private static final String ARG_COLUMN_COUNT = "column-count";  private View lview;      public ContactsFragment() {  }    @SuppressWarnings("unused")  public static ContactsFragment newInstance(int columnCount) {      ContactsFragment fragment = new ContactsFragment();      Bundle args = new Bundle();      args.putInt(ARG_COLUMN_COUNT, columnCount);      fragment.setArguments(args);      return fragment;  }    @Override  public void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      DataBaseOperations hell = new DataBaseOperations(getActivity());      SQLiteDatabase db = hell.getReadableDatabase();      String[] columns = {mDatabase.Tableinfo.ID,mDatabase.Tableinfo.Contacts_phone,mDatabase.Tableinfo.Contacts_name};      Cursor Contacts = db.query(mDatabase.Tableinfo.contacts,columns,null,null,null,null,null);      db.close();      Contacts.close();      hell.close();      String[] from = {mDatabase.Tableinfo.Contacts_phone,mDatabase.Tableinfo.Contacts_name};      int[] to = {R.id.phone,R.id.name};      ContactsAdapter adapter = new ContactsAdapter(getActivity(),R.layout.fragment_contacts,Contacts,from,to,0);      setListAdapter(adapter);        }    public class ContactsAdapter extends SimpleCursorAdapter{        public ContactsAdapter(Context context, int layout, Cursor c, String[] from, int[] to, int flags) {          super(context, layout, c, from, to, flags);      }  }        @Override  public View onCreateView(LayoutInflater inflater, ViewGroup container,                           Bundle savedInstanceState) {      lview = inflater.inflate(R.layout.fragment_contacts_list, container, false);      return lview;  }