title: Error:(17, 21) error: no suitable method found for add(int, ExampleItemFragment)
body: <p>I'm using Android Studio.  I'm trying to develop an app where one fragment holds a list, and tapping an item displays another fragment with details. I built the list, following the tutorial available at: <a href="https://www.airpair.com/android/list-fragment-android-studio" rel="nofollow">https://www.airpair.com/android/list-fragment-android-studio</a></p>
  
  <p>I was planning on taking the code apart again after seeing how it ran. However, when I tried to run it (at step 6, where the basic list should be functioning), I got the error:</p>
  
  <pre><code>Error:(17, 21) error: no suitable method found for add(int,ExampleItemFragment)
  method FragmentTransaction.add(Fragment,String) is not applicable
  (argument mismatch; int cannot be converted to Fragment)
  method FragmentTransaction.add(int,Fragment) is not applicable
  (argument mismatch; ExampleItemFragment cannot be converted to Fragment)
  </code></pre>
  
  <p>in</p>
  
  <pre><code>package com.example.brittany.fragmentlistexample;
  
  import android.support.v7.app.AppCompatActivity;
  import android.os.Bundle;
  import android.view.Menu;
  import android.view.MenuItem;
  
  public class MainActivity extends AppCompatActivity {
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  
      if (savedInstanceState == null) {
          getSupportFragmentManager().beginTransaction()
                  .add(R.id.container, new ExampleItemFragment())
                  .commit();
      }
  }
  
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
      // Inflate the menu; this adds items to the action bar if it is present.
      getMenuInflater().inflate(R.menu.menu_main, menu);
      return true;
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
      // Handle action bar item clicks here. The action bar will
      // automatically handle clicks on the Home/Up button, so long
      // as you specify a parent activity in AndroidManifest.xml.
      int id = item.getItemId();
  
      //noinspection SimplifiableIfStatement
      if (id == R.id.action_settings) {
          return true;
      }
  
      return super.onOptionsItemSelected(item);
  }
  }
  </code></pre>
  
  <p>Where &amp; how should I implement this .add() method, or should I do something to the object I'm passing in order to make an inherited .add() accept it? The class ExampleItemFragment already extends Fragment.</p>
  
  <p>ExampleItemFragment's code (mostly untouched from the default code):</p>
  
  <pre><code>package com.example.brittany.fragmentlistexample;
  
  import android.app.Activity;
  import android.os.Bundle;
  import android.app.Fragment;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.AbsListView;
  import android.widget.AdapterView;
  import android.widget.ArrayAdapter;
  import android.widget.ListAdapter;
  import android.widget.TextView;
  import android.widget.Toast;
  
  import com.example.brittany.fragmentlistexample.dummy.DummyContent;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class ExampleItemFragment extends Fragment implements AbsListView.OnItemClickListener {
  private List exampleListItemList; // at the top of your fragment list
  
  // TODO: Rename parameter arguments, choose names that match
  // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
  private static final String ARG_PARAM1 = "param1";
  private static final String ARG_PARAM2 = "param2";
  
  // TODO: Rename and change types of parameters
  private String mParam1;
  private String mParam2;
  
  private OnFragmentInteractionListener mListener;
  
  /**
   * The fragment's ListView/GridView.
   */
  private AbsListView mListView;
  
  /**
   * The Adapter which will be used to populate the ListView/GridView with
   * Views.
   */
  private ListAdapter mAdapter;
  
  // TODO: Rename and change types of parameters
  public static ExampleItemFragment newInstance(String param1, String param2) {
      ExampleItemFragment fragment = new ExampleItemFragment();
      Bundle args = new Bundle();
      args.putString(ARG_PARAM1, param1);
      args.putString(ARG_PARAM2, param2);
      fragment.setArguments(args);
      return fragment;
  }
  
  /**
   * Mandatory empty constructor for the fragment manager to instantiate the
   * fragment (e.g. upon screen orientation changes).
   */
  public ExampleItemFragment() {
  }
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
  
      exampleListItemList = new ArrayList();
      exampleListItemList.add(new ExampleListItem("Example 1"));
      exampleListItemList.add(new ExampleListItem("Example 2"));
      exampleListItemList.add(new ExampleListItem("Example 3"));
      mAdapter = new ExampleListAdapter(getActivity(), exampleListItemList);
  
      if (getArguments() != null) {
          mParam1 = getArguments().getString(ARG_PARAM1);
          mParam2 = getArguments().getString(ARG_PARAM2);
      }
  
      // TODO: Change Adapter to display your content
      mAdapter = new ArrayAdapter&lt;DummyContent.DummyItem&gt;(getActivity(),
              android.R.layout.simple_list_item_1, android.R.id.text1, DummyContent.ITEMS);
  }
  
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
                           Bundle savedInstanceState) {
      View view = inflater.inflate(R.layout.fragment_exampleitem, container, false);
  
      // Set the adapter
      mListView = (AbsListView) view.findViewById(android.R.id.list);
      ((AdapterView&lt;ListAdapter&gt;) mListView).setAdapter(mAdapter);
  
      // Set OnItemClickListener so we can be notified on item clicks
      mListView.setOnItemClickListener(this);
  
      return view;
  }
  
  @Override
  public void onAttach(Activity activity) {
      super.onAttach(activity);
      try {
          mListener = (OnFragmentInteractionListener) activity;
      } catch (ClassCastException e) {
          throw new ClassCastException(activity.toString()
                  + " must implement OnFragmentInteractionListener");
      }
  }
  
  @Override
  public void onDetach() {
      super.onDetach();
      mListener = null;
  }
  
  @Override
  public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) {
      ExampleListItem item = (ExampleListItem)this.exampleListItemList.get(position);
      Toast.makeText(getActivity(), item.getItemTitle() + " Clicked!"
              , Toast.LENGTH_SHORT).show();
      if (null != mListener) {
          // Notify the active callbacks interface (the activity, if the
          // fragment is attached to one) that an item has been selected.
          mListener.onFragmentInteraction(DummyContent.ITEMS.get(position).id);
      }
  }
  
  /**
   * The default content for this Fragment has a TextView that is shown when
   * the list is empty. If you would like to change the text, call this method
   * to supply the text it should use.
   */
  public void setEmptyText(CharSequence emptyText) {
      View emptyView = mListView.getEmptyView();
  
      if (emptyView instanceof TextView) {
          ((TextView) emptyView).setText(emptyText);
      }
  }
  
  /**
   * This interface must be implemented by activities that contain this
   * fragment to allow an interaction in this fragment to be communicated
   * to the activity and potentially other fragments contained in that
   * activity.
   * &lt;p/&gt;
   * See the Android Training lesson &lt;a href=
   * "http://developer.android.com/training/basics/fragments/communicating.html"
   * &gt;Communicating with Other Fragments&lt;/a&gt; for more information.
   */
  public interface OnFragmentInteractionListener {
      // TODO: Update argument type and name
      public void onFragmentInteraction(String id);
  }
  
  }
  </code></pre>