title: Issues using Expandable List view with CollapsingToolbarLayout
body: <p>I have a Layout which looks like this.</p>
  
  <p><a href="https://i.stack.imgur.com/4ofUj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4ofUj.png" alt="enter image description here"></a></p>
  
  <p>Upon adding <strong>Expandable layout at the bottom of this Layout</strong> pushes my content inside the CollapsingToolbarLayout and hides it until i scroll it back down.</p>
  
  <p>You can see the arrow pointing to the hiding content, under the CollapsingToolbarLayout layout. leaving only "Genre" to show </p>
  
  <p><a href="https://i.stack.imgur.com/Az6t6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Az6t6.png" alt="enter image description here"></a></p>
  
  <p>This is my code below, I am using CoordinatorLayout, CollapsingToolbarLayout, LinearLayout following this example => <a href="https://github.com/chrisbanes/cheesesquare" rel="nofollow noreferrer">https://github.com/chrisbanes/cheesesquare</a></p>
  
  <pre><code>    &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"
          android:fitsSystemWindows="true"&gt;
  
          &lt;android.support.design.widget.AppBarLayout
              android:id="@+id/appbar"
              android:layout_width="match_parent"
              android:layout_height="@dimen/detail_backdrop_height"
              android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
              android:fitsSystemWindows="true"&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"
                  android:fitsSystemWindows="true"
                  app:contentScrim="?attr/colorPrimaryDark"
                  app:expandedTitleMarginStart="48dp"
                  app:expandedTitleMarginEnd="64dp"&gt;
  
                  &lt;ImageView
                      android:id="@+id/moviebigimage"
                      android:layout_width="match_parent"
                      android:layout_height="match_parent"
                      android:scaleType="centerCrop"
                      android:fitsSystemWindows="true"
                      app:layout_collapseMode="parallax" /&gt;
  
                  &lt;android.support.v7.widget.Toolbar
                      android:id="@+id/toolbar"
                      android:layout_width="match_parent"
                      android:layout_height="?attr/actionBarSize"
                      app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
                      app:layout_collapseMode="pin" /&gt;
  
              &lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
  
          &lt;/android.support.design.widget.AppBarLayout&gt;
  
          &lt;android.support.v4.widget.NestedScrollView
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              app:layout_behavior="@string/appbar_scrolling_view_behavior"&gt;
  
              &lt;LinearLayout
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"
                  android:orientation="vertical"
                  android:paddingBottom="24dp"
                  android:paddingTop="24dp"&gt;
  
  
  
                  &lt;!-- I have other layouts here --&gt;
  &lt;!--but i remove it so the post will not be too Long --&gt;
  
                  &lt;LinearLayout
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:orientation="horizontal"
                      android:paddingLeft="8dp"
                      android:paddingTop="10dp"&gt;
  
                      &lt;LinearLayout
                          android:layout_width="wrap_content"
                          android:layout_height="wrap_content"
                          android:paddingLeft="8dp"
                          android:orientation="vertical" &gt;
  
                          &lt;TextView
                              android:id="@+id/othercentres"
                              android:layout_width="match_parent"
                              android:layout_height="wrap_content"
                              android:text="Very Long text here"
                              android:paddingTop="7dp"
                              android:paddingRight="5dp"
                              android:textAppearance="@style/SmallTitle"
                              /&gt;
  
                      &lt;/LinearLayout&gt;
  
                  &lt;/LinearLayout&gt;
  
                  &lt;View
                      android:layout_width="fill_parent"
                      android:layout_height="1dp"
                      android:layout_marginTop="10dp"
                      android:background="#cccccc"/&gt;
  
                  &lt;!-- Expandable List --&gt;
                  &lt;ScrollView
                      android:id="@+id/activity_expandable_scroll_view"
                      android:layout_width="match_parent"
                      android:layout_height="400dp"
                      android:fillViewport="true"&gt;
                      &lt;ExpandableListView
                          android:id="@+id/laptop_list"
                          android:layout_width="match_parent"
                          android:layout_height="fill_parent" &gt;
                      &lt;/ExpandableListView&gt;
                  &lt;/ScrollView&gt;
  
  
              &lt;/LinearLayout&gt;
  
          &lt;/android.support.v4.widget.NestedScrollView&gt;
  
          &lt;android.support.design.widget.FloatingActionButton
              android:layout_height="wrap_content"
              android:layout_width="wrap_content"
              app:layout_anchor="@id/appbar"
              app:layout_anchorGravity="bottom|right|end"
              android:src="@drawable/ic_video"
              android:layout_margin="@dimen/fab_margin"
              android:clickable="true"/&gt;
  
      &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>
  
  <p>Please what can i do to solve this???</p>