MainPage.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:d="http://xamarin.com/schemas/2014/forms/design" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" x:Class="CastRadio.MainPage" xmlns:ios="clr-namespace:Xamarin.Forms.PlatformConfiguration.iOSSpecific;assembly=Xamarin.Forms.Core"             ios:Page.UseSafeArea="true">
    <StackLayout>
        <Entry Text="{Binding CastUrl, Mode=TwoWay}" />
        <Button Text="Cast" Command="{Binding StartCastCommand}" />
        <ListView MinimumHeightRequest="100" SelectionMode="Single" ItemsSource="{Binding CastDevices}" SelectedItem="{Binding SelectedCastDevice}">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <TextCell Text="{Binding FriendlyName}" />
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>
    </StackLayout>
</ContentPage>