Xamarin Forms stacklayout fill screen on landscape

Question

How can I do stacklayout take all screen width when device is in Landscape? in Landscape mode stacklayout does not fill parent

here is my Xaml:

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
         xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
         xmlns:local="clr-namespace:ListView"
         x:Class="ListView.MainPage">
<ContentPage.Content>
        <AbsoluteLayout BackgroundColor="Silver" HorizontalOptions="FillAndExpand">
        <StackLayout Orientation="Vertical" HorizontalOptions="StartAndExpand" BackgroundColor="Maroon" VerticalOptions="StartAndExpand">
            <Button Text="Reload data" Clicked="reloadData" x:Name="btnReload"/>
            <ListView x:Name="listView">
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <ViewCell>
                            <StackLayout BackgroundColor="#eee" Orientation="Vertical">
                                <StackLayout Orientation="Horizontal"  VerticalOptions="FillAndExpand">
                                    <Image Source="{Binding Imagen}" HeightRequest="100" WidthRequest="120"/>
                                    <Label Text="{Binding Titulo}" TextColor="Gray"/>
                                    <Label Text="{Binding Fecha}"  HorizontalOptions="EndAndExpand"/>
                                </StackLayout>
                            </StackLayout>
                        </ViewCell>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>
        </StackLayout>
        <ActivityIndicator BackgroundColor="Green" AbsoluteLayout.LayoutBounds=".5,.5,.2,.2" AbsoluteLayout.LayoutFlags="All" Color="Blue"
                            IsRunning="True" IsVisible="False" x:Name="overlay"/>
    </AbsoluteLayout>
</ContentPage.Content>

I want stacklayout take screen width on landscape; but only on portrait is work.

Answer 1

When controls are direct children of an AbsoluteLayout setting HorizontalOptions and VerticalOptions has no effect. All of the sizing must come from setting AbsoluteLayout.LayoutBounds and AbsoluteLayout.LayoutFlags. So try changing your StackLayout to this:

<AbsoluteLayout BackgroundColor="Silver"
                HorizontalOptions="FillAndExpand">
  <StackLayout Orientation="Vertical" 
               BackgroundColor="Maroon"
               AbsoluteLayout.LayoutBounds="0,0,1,1"
               AbsoluteLayout.LayoutFlags="All">
    ...

Then you also may need to set your ListView.HorizontalOptions to FillAndExpand but try without that first.