title: Dynamic HeightRequest not working correctly in xamarin forms
body: <p>In my XAML I have this StackLayout:</p>
  
  <pre><code>&lt;StackLayout x:Name="FooterWrapper"
               Spacing="0"
               VerticalOptions="FillAndExpand"
               HorizontalOptions="FillAndExpand"
               BackgroundColor="Transparent"&gt;
      &lt;BoxView BackgroundColor="Transparent" 
               HorizontalOptions="Center" 
               VerticalOptions="CenterAndExpand" 
               x:Name="can_applyComplete_topspace" /&gt;
      &lt;Grid&gt;
          &lt;Grid.ColumnDefinitions&gt;
              &lt;ColumnDefinition Width=".07*" /&gt;
              &lt;ColumnDefinition Width=".86*" /&gt;
              &lt;ColumnDefinition Width=".07*" /&gt;
          &lt;/Grid.ColumnDefinitions&gt;
           &lt;Grid.RowDefinitions&gt;
              &lt;RowDefinition Height=".40*"/&gt;
              &lt;RowDefinition Height="Auto"/&gt;
          &lt;/Grid.RowDefinitions&gt;
          &lt;controls:AndroidButton x:Name="can_applycomplete_gotitbtn" 
                                  Grid.Row="0" 
                                  Text="{Binding SkipButtonText}" 
                                  StyleId="uit_can_applycomplete_gotitbtn" 
                                  FontFamily="Avenir Next" 
                                  BackgroundColor="White" 
                                  Grid.Column="1" 
                                  HorizontalOptions="FillAndExpand" 
                                  VerticalOptions="Fill" 
                                  TextColor="Black" 
                                  Clicked="Handle_SkipClicked" /&gt;
          &lt;controls:CustomLabel Grid.Row="1" 
                                Grid.Column="1" 
                                Text="{i18n:TranslateExtension Text= res_cand_candjobcompliance_profilereachedlbl_list_footer}" 
                                VerticalOptions="Center" 
                                IsVisible="{Binding IsFooterVisible}" 
                                x:Name="cand_candjobcompliance_profilereachedlbl_list_footer" 
                                StyleId="uit_cand_candjobcompliance_profilereachedlbl_list_footer" 
                                TextColor="White" 
                                FontSize="13" /&gt;
      &lt;/Grid&gt;
  &lt;/StackLayout&gt;
  </code></pre>
  
  <p>I need to dynamically control the Height of the StackLayout </p>
  
  <p>In OnAppearing i am setting particular height for the stacklayout</p>
  
  <pre><code>FooterWrapper.HeightRequest = 196
  </code></pre>
  
  <p>In iOS its working, My new Height is set to the view but in android my height is ignored.</p>