title: Xamarin.Forms: Not visible ToolbarItems in ContentPage
body: <p>I am using Xamarin.Forms for my project &amp; I need to have Toolbar at the top of the page.
  I am trying to get it along with Tabbed pages at bottom.
  My code is</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;ContentPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
               xmlns:local="clr-namespace:edTheSIS"
               x:Class="edTheSIS.ParentDashboard"&gt;
      &lt;ContentPage.ToolbarItems&gt;
          &lt;ToolbarItem Name="MenuItem1" Order="Primary" Text="Item 1" Priority="0" /&gt;
          &lt;ToolbarItem Name="MenuItem2" Order="Primary" Text="Item 2" Priority="1" /&gt;
      &lt;/ContentPage.ToolbarItems&gt;
      &lt;AbsoluteLayout&gt;
          &lt;StackLayout BackgroundColor="Teal" AbsoluteLayout.LayoutBounds="0, 5, 0, 0" AbsoluteLayout.LayoutFlags="All"&gt;
              &lt;StackLayout Margin="0,200,0,0" HorizontalOptions="Center"&gt;
                  &lt;Label Text="Xamarin.Forms" HorizontalTextAlignment="Center" TextColor="White"&gt;&lt;/Label&gt;
                  &lt;Label Text="Bottom NavigationBar" HorizontalTextAlignment="Center" TextColor="White"&gt;&lt;/Label&gt;
              &lt;/StackLayout&gt;
          &lt;/StackLayout&gt;
          &lt;StackLayout AbsoluteLayout.LayoutBounds=".20,1,1,.1" AbsoluteLayout.LayoutFlags="All" BackgroundColor="White" HorizontalOptions="FillAndExpand" Orientation="Horizontal"&gt;
              &lt;StackLayout Style="{StaticResource ButtonNavigationBarStackLayoutStyle}" x:Name="stckHome"&gt;
                  &lt;Image Margin="0,10,0,10" x:Name="imgHome" Style="{StaticResource ButtonNavigationBarImageStyle}" /&gt;
                  &lt;Label Text="Dairy" Style="{StaticResource ButtonNavigationBarLabelStyle}"&gt;&lt;/Label&gt;
              &lt;/StackLayout&gt;
              &lt;StackLayout Style="{StaticResource ButtonNavigationBarStackLayoutStyle}" x:Name="stckAlarm"&gt;
                  &lt;Image Margin="0,10,0,10" x:Name="imgAlarm" Style="{StaticResource ButtonNavigationBarImageStyle}" /&gt;
                  &lt;Label Text="Alarm" Style="{StaticResource ButtonNavigationBarLabelStyle}"&gt;&lt;/Label&gt;
              &lt;/StackLayout&gt;
          &lt;/StackLayout&gt;
      &lt;/AbsoluteLayout&gt;
  &lt;/ContentPage&gt;  
  </code></pre>
  
  <p>After executing the code only tabs are showing up, not ToolbarItems.</p>