title: Creating ListView with android.support.v4.view.ViewPager showing nothing
body: <p>I'm trying to create a ListView that each cell can be shifted as ViewPager.
  Similar to Google Gmail app, that can shift emails in order to delete the emails.
  It is working BUT showing nothing.</p>
  
  <p>I created a ListView with BaseAdapter.
  The Adapter create ViewPager with PagerAdapter that implements FragmentStatePagerAdapter.
  The PagerAdapter activate the Fragment that supposed to show the data at the cells in the pagers.
  Can you please help?</p>
  
  <pre><code>package com.tegrity.gui;
  
  import java.util.ArrayList;
  
  import android.app.Activity;
  import android.app.Fragment;
  import android.app.FragmentManager;
  import android.content.Context;
  import android.os.Bundle;
  import android.support.v13.app.FragmentStatePagerAdapter;
  import android.support.v4.view.PagerAdapter;
  import android.support.v4.view.ViewPager;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.BaseAdapter;
  import android.widget.ListView;
  import android.widget.TextView;
  
  public class MyFregment extends Fragment {
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
      }
  
      /**
       * simple ListView
       */
      @Override
      public View onCreateView(LayoutInflater inflater, ViewGroup container,
              Bundle savedInstanceState) {
          View view = inflater.inflate(R.layout.my_view1, container, false);
          ListView mMyListView = (ListView) view.findViewById(R.id.myList1);
  
          // create the my adapter
          MyAdapter mMyAdapter = new MyAdapter(getActivity());
          mMyListView.setAdapter(mMyAdapter);
  
          // This is working but without the ListView
          // view = inflater.inflate(R.layout.connect_pager_view, null);
          // android.support.v4.view.ViewPager myPagerUnit =
          // (android.support.v4.view.ViewPager)
          // view.findViewById(R.id.connect_pager);
          // PagerAdapter pagerAdapter = new MyPagerAdapter(getFragmentManager(),
          // 0);
          // myPagerUnit.setAdapter(pagerAdapter);
  
          return view;
      }
  
      // the data
      private static ArrayList&lt;String&gt; mMyList0 = new ArrayList&lt;String&gt;();
  
      /**
       * my adapter
       */
      public class MyAdapter extends BaseAdapter {
          // the data
          private ArrayList&lt;String&gt; mMyList = new ArrayList&lt;String&gt;();
  
          private Context mContext;
  
          private LayoutInflater mInflater;
  
          public MyAdapter(Context context) {
              mContext = context;
              mInflater = LayoutInflater.from(mContext);
  
              mMyList.add("First line");
              mMyList.add("Second line");
              mMyList.add("Third line");
              mMyList0 = mMyList;
          }
  
          @Override
          public int getCount() {
              return mMyList.size();
          }
  
          @Override
          public Object getItem(int position) {
              return mMyList.get(position);
          }
  
          @Override
          public long getItemId(int position) {
              return position;
          }
  
          @Override
          public View getView(int position, View convertView, ViewGroup parent) {
              // optimization
              if (convertView == null) {
                  convertView = mInflater.inflate(R.layout.connect_pager_view,
                          null);
              }
              android.support.v4.view.ViewPager myPagerUnit = (android.support.v4.view.ViewPager) convertView
                      .findViewById(R.id.connect_pager);
              PagerAdapter pagerAdapter = new MyPagerAdapter(
                      getFragmentManager(), position);
              myPagerUnit.setAdapter(pagerAdapter);
              myPagerUnit
                      .setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
                          @Override
                          public void onPageSelected(int position) {
                              ((Activity) mContext).invalidateOptionsMenu();
                          }
                      });
  
              return convertView;
          }
      }
  
      /**
       * A simple pager adapter
       */
      class MyPagerAdapter extends FragmentStatePagerAdapter {
          // parameters from the my adapter
          private int mPosition;
  
          public MyPagerAdapter(FragmentManager fm, int position) {
              super(fm);
              mPosition = position;
          }
  
          @Override
          public Fragment getItem(int pagePosition) {
              return MyUnitFragment.create(pagePosition, mPosition);
          }
  
          @Override
          public int getCount() {
              return 2; // pager of 2 cells
          }
      }
  
      /**
       * my basic unit
       */
      public static class MyUnitFragment extends Fragment {
          public static final String PAGE = "page";
          public static final String POSITION = "position";
  
          private int mPageNumber;
  
          // parameter from the my adapter
          private int mPosition;
  
          /**
           * Factory method for this fragment class. Constructs a new fragment for
           * the given page number.
           */
          public static MyUnitFragment create(int pageNumber, int position) {
              MyUnitFragment fragment = new MyUnitFragment();
              Bundle args = new Bundle();
              args.putInt(PAGE, pageNumber);
              args.putInt(POSITION, position);
              fragment.setArguments(args);
              return fragment;
          }
  
          public MyUnitFragment() {
          }
  
          @Override
          public void onCreate(Bundle savedInstanceState) {
              super.onCreate(savedInstanceState);
              mPageNumber = getArguments().getInt(PAGE);
              mPosition = getArguments().getInt(POSITION);
          }
  
          @Override
          public View onCreateView(LayoutInflater inflater, ViewGroup container,
                  Bundle savedInstanceState) {
              // Inflate the layout containing a title and body text.
              View convertView = (View) inflater.inflate(R.layout.bookmark_unit,
                      container, false);
  
              // page parts
              String data = mMyList0.get(mPosition);
  
              TextView textView = (TextView) convertView
                      .findViewById(R.id.bookmarkText1);
  
              switch (mPageNumber) {
              case 0: {
                  textView.setText(data + " at the first page");
                  break;
              }
              case 1: {
                  textView.setText(data + " at the second page");
                  break;
              }
              }
  
              return convertView;
          }
  
          /**
           * Returns the page number represented by this fragment object.
           */
          public int getPageNumber() {
              return mPageNumber;
          }
      }
  }
  </code></pre>
  
  <p>XML for the ListView myList1.xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="fill_parent" android:layout_height="fill_parent" 
      android:orientation="vertical"
      android:background="@color/white" &gt;
  
      &lt;ListView android:id="@+id/myList1"
          android:layout_width="fill_parent" android:layout_height="wrap_content"
          android:divider="@drawable/course_divider"
          android:dividerHeight="2dp"
          android:cacheColorHint="#00000000" &gt;
      &lt;/ListView&gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>XML for the Pager connect_pager_view.xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
      android:id="@+id/connect_pager"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"&gt;
  &lt;/android.support.v4.view.ViewPager&gt;
  </code></pre>
  
  <p>The list unit my_unit.xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:orientation="horizontal"&gt;
  
      &lt;TextView android:id="@+id/myText1" 
          android:layout_width="wrap_content" android:layout_height="wrap_content"
          android:textSize="18sp"
          android:textColor="@color/black"
          android:layout_marginLeft="6dp"&gt;
      &lt;/TextView&gt; 
  
  &lt;/LinearLayout&gt;
  </code></pre>