title: List view not scrolling in fragment using view pager inside NestedScrollView
body: <p>Hi there i needed to create layout like whatsapp, which scrolls the actionbar but not tabLayout. I used viewpager for loads fragment in it.
  In fragment i added listview but on Listview scroll that action bar not scrolling there.
  Using some tutorials on stackoverflow i got that for this purpose needed to use nestedScrollView and it works for me.
  But it stops scrolling listview.
  I used this code for that.</p>
  
  <h1>activity_my.xml</h1>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:id="@+id/main_content"
  android:layout_width="match_parent"
  android:layout_height="match_parent"&gt;
  
  &lt;android.support.design.widget.AppBarLayout
      android:id="@+id/appbar"
      android:layout_width="match_parent"
      android:layout_height="200dp"
      android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"&gt;
  
      &lt;android.support.design.widget.CollapsingToolbarLayout
          android:id="@+id/collapsing_toolbar"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          app:layout_scrollFlags="scroll|exitUntilCollapsed"&gt;&lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
  
  &lt;/android.support.design.widget.AppBarLayout&gt;
  
  &lt;FrameLayout
      android:layout_width="match_parent"
      android:layout_height="?attr/actionBarSize"
      android:layout_gravity="bottom"
      app:layout_anchor="@+id/appbar"
      app:layout_anchorGravity="bottom"
      app:layout_collapseMode="none"&gt;
  
      &lt;ImageView
          android:id="@+id/tabBg"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:background="@color/primary"
          android:scaleType="fitXY" /&gt;
  
      &lt;android.support.design.widget.TabLayout
          android:id="@+id/tabs"
          android:layout_width="match_parent"
          android:layout_height="?attr/actionBarSize"
          android:layout_gravity="bottom"
          android:background="#00000000"
          app:layout_anchor="@+id/appbar"
          app:layout_anchorGravity="bottom"
          app:layout_collapseMode="none"
          app:tabGravity="fill"
          app:tabIndicatorColor="#fff"
          app:tabIndicatorHeight="2dp"
          app:tabMode="scrollable"
          app:tabSelectedTextColor="#fff"
          app:tabTextColor="#fff" /&gt;
  
  &lt;/FrameLayout&gt;
  &lt;android.support.v4.widget.NestedScrollView
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:layout_marginTop="?attr/actionBarSize"
      app:layout_behavior="@string/appbar_scrolling_view_behavior"&gt;
  
      &lt;LinearLayout
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:minHeight="1000dp"
          android:orientation="vertical"&gt;
  
          &lt;android.support.v4.view.ViewPager
              android:id="@+id/pager"
              android:layout_width="match_parent"
              android:layout_height="0dp"
              android:layout_weight="1"/&gt;
      &lt;/LinearLayout&gt;
  &lt;/android.support.v4.widget.NestedScrollView&gt;
  
  &lt;!--&lt;android.support.v4.view.ViewPager
      android:id="@+id/pager"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:layout_marginTop="?attr/actionBarSize"
      app:layout_behavior="@string/appbar_scrolling_view_behavior" /&gt;--&gt;
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>
  
  <h1>MyActivity.java</h1>
  
  <pre><code>public class MyActivity extends AppCompatActivity {
  private TabLayout tabLayout;
  private ViewPager viewPager;
  ArrayList&lt;Fragment&gt; fragmentArrayList;
  TabAdapter tabAdapter;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_my);
      /*Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
      setSupportActionBar(toolbar);
      getSupportActionBar().setDisplayHomeAsUpEnabled(false);*/
  
      viewPager = (ViewPager) findViewById(R.id.pager);
      setupViewPager(viewPager);
  
      tabLayout = (TabLayout) findViewById(R.id.tabs);
      tabLayout.setupWithViewPager(viewPager);
  }
  
  private void setupViewPager(ViewPager viewPager) {
      TabAdapter adapter = new TabAdapter(getSupportFragmentManager());
      adapter.addFragment(new OneFragment(), "ONE");
      adapter.addFragment(new OneFragment(), "TWO");
      adapter.addFragment(new OneFragment(), "THREE");
      viewPager.setAdapter(adapter);
     }
  
   }
  </code></pre>
  
  <h1>FragmentOne.java</h1>
  
  <pre><code>public class OneFragment extends Fragment {
  ListView listTest;
  ArrayList&lt;String&gt; itemList;
  ArrayAdapter&lt;String&gt; adapter;
  
  public OneFragment() {
      // Required empty public constructor
  }
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
  }
  
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
                           Bundle savedInstanceState) {
      View view = inflater.inflate(R.layout.fragment_one, container, false);
      listTest = (ListView) view.findViewById(R.id.listTest);
      itemList = new ArrayList&lt;&gt;();
      for (int i = 0; i &lt; 50; i++) {
          itemList.add("Item : " + i);
      }
      adapter = new ArrayAdapter&lt;String&gt;(getActivity(), android.R.layout.simple_list_item_1, itemList);
      listTest.setAdapter(adapter);
      return view;
     }
  }
  </code></pre>
  
  <h1>fragment_one.xml</h1>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="match_parent"
      android:layout_height="match_parent"&gt;
      &lt;ListView
          android:id="@+id/listTest"
          android:layout_width="match_parent"
          android:layout_height="match_parent"&gt;&lt;/ListView&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <blockquote>
    <p>I used LinearLayout monHeight = 1000dp because if i use android:fillViewPort="true" in nestedScrollView and remove minHeight from LinearLayout then listview shows but not scroll.
    Now it scrolls but till 1000dp then the other items are not shown.</p>
  </blockquote>