title: Menu item on bottom of CollapsingToolbarLayout when expanded
body: <p>I've been searching for a while as shown on the following images but unfortunately I was not able to find anything similar</p>
  
  <p><code>edit menu item</code> is moving to bottom of <code>CollapsingToolbarLayout</code> when it is expanded</p>
  
  <p><a href="https://i.stack.imgur.com/wpY7J.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wpY7J.png" alt="enter image description here"></a><a href="https://i.stack.imgur.com/60V2s.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/60V2s.png" alt="enter image description here"></a><a href="https://i.stack.imgur.com/Kiqdw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Kiqdw.png" alt="enter image description here"></a><a href="https://i.stack.imgur.com/xlId2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xlId2.png" alt="enter image description here"></a></p>
  
  <p>I tried a long combination of atributes for menu item but without success</p>
  
  <p>This is my attempt</p>
  
  <p><a href="https://i.stack.imgur.com/BzTBb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BzTBb.png" alt="enter image description here"></a></p>
  
  <p>My screen xml</p>
  
  <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"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:fitsSystemWindows="true"
      tools:context=".ui.activities.AmbassadorActivity"&gt;
  
      &lt;android.support.design.widget.AppBarLayout
          android:id="@+id/app_bar"
          android:layout_width="match_parent"
          android:layout_height="@dimen/app_bar_height"
          android:fitsSystemWindows="true"
          android:theme="@style/AppTheme.AppBarOverlay"&gt;
  
          &lt;android.support.design.widget.CollapsingToolbarLayout
              android:id="@+id/toolbar_layout"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:fitsSystemWindows="true"
              app:contentScrim="?attr/colorPrimary"
              app:layout_scrollFlags="scroll|exitUntilCollapsed"
              app:toolbarId="@+id/toolbar"&gt;
  
              &lt;ImageView
                  android:id="@+id/photo"
                  android:scaleType="centerCrop"
                  android:transitionName="@string/ambassador_photo"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"
                  android:layout_gravity="center"
                  android:fitsSystemWindows="true"
                  app:layout_collapseMode="parallax"
                  android:contentDescription="@string/ambassador_photo" /&gt;
  
              &lt;android.support.v7.widget.Toolbar
                  android:id="@+id/toolbar"
                  android:layout_width="match_parent"
                  android:layout_height="?attr/actionBarSize"
                  app:layout_collapseMode="pin"
                  app:navigationIcon="@drawable/ic_arrow_back_white_24dp"
                  app:popupTheme="@style/AppTheme.PopupOverlay" /&gt;
  
          &lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
  
      &lt;/android.support.design.widget.AppBarLayout&gt;
  
      &lt;include layout="@layout/content_ambassador" /&gt;
  
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>
  
  <p>My menu xml</p>
  
  <pre><code>&lt;menu 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"
      tools:context=".ui.activities.AmbassadorActivity"&gt;
      &lt;item
          android:id="@+id/action_save"
          android:title="@string/save"
          android:icon="@drawable/ic_save_white_24dp"
          android:orderInCategory="300"
          app:showAsAction="always" /&gt;
  
      &lt;item android:id="@+id/action_skills"
          android:title="@string/skills"
          app:showAsAction="ifRoom"
          android:orderInCategory="200"
          android:icon="@drawable/ic_local_activity_white_24dp"/&gt;
  
      &lt;item android:id="@+id/action_edit_name"
          android:title="@string/edit_name"
          app:showAsAction="ifRoom"
          android:orderInCategory="100"
          android:icon="@drawable/ic_edit_white_24dp"/&gt;
  &lt;/menu&gt;
  </code></pre>
  
  <p>How to implement this menu item behavior like WhatsApp group?</p>
  
  <p>Thanks for any suggestion!</p>