title: The cell doesnt show a complete image
body: <p>I want to do a Cell with a yellow background and one orange box with a text and after an image with a medium size, but it doesn't work. The image doesn't appear big and I can't use a margin</p>
  
  <p>This is my XAML </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"
           x:Class="neoFly_Montana.Views.PromocoesView"
           BackgroundImage="promocoesbackground"
           Title="Promoções"&gt;
  &lt;ContentPage.Content&gt;
      &lt;ListView x:Name="listview_promocoes" Margin="0, 20, 0, 0 "&gt;
              &lt;ListView.ItemTemplate&gt;
                  &lt;DataTemplate&gt;
                  &lt;ViewCell&gt;
  
                      &lt;StackLayout BackgroundColor="AliceBlue" HorizontalOptions="Center" VerticalOptions="FillAndExpand"&gt;
                          &lt;Label Text="{Binding titulo}" Style="{StaticResource labelsfont}"/&gt;
  
                          &lt;Image Source="{Binding imagem}" Aspect="AspectFill"/&gt;
                      &lt;/StackLayout&gt;
  
  
                  &lt;/ViewCell&gt;
  
  
              &lt;/DataTemplate&gt;
          &lt;/ListView.ItemTemplate&gt;
      &lt;/ListView&gt;
  
  
  &lt;/ContentPage.Content&gt;
  </code></pre>
  
  <p></p>
  
  <p>This is the bad result (with 2 item - u can't see the image)</p>
  
  <p><a href="https://i.stack.imgur.com/gr16P.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gr16P.png" alt="enter image description here"></a></p>
  
  <p>I want to do something like this but I can't use margin because when I use it, the app doesn't work.</p>
  
  <p><a href="https://i.stack.imgur.com/vi1rJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vi1rJ.png" alt="enter image description here"></a></p>
  
  <p>It needs to be one item of a ListView.
  All items should be like this.</p>
  
  <p>How can I do that?
  Thank you.</p>