使用Xamarin表单，在iPhone X上保持横向导航页面标题图标的纵横比

   <ResourceDictionary>

       <Style TargetType="NavigationPage">

           <Setter Property="BarBackgroundColor" Value="YourBackgroundColor" />

           <Setter Property="BarTextColor" Value="YourTextColor" />

           <Setter Property="HeightRequest" Value="YourHeight" />

           <Setter Property="Padding" Value="YourPadding" />

           <Setter Property="IconImageSource" Value="YourIconImageSource" />

       </Style>

   </ResourceDictionary>

   public CustomTitleView()

   {

       var image = new Image

       {

           Source = "YourIconImageSource",

           Aspect = Aspect.AspectFit

       };

       var label = new Label

       {

           Text = "YourTitleText",

           TextColor = Color.White,

           FontSize = Device.GetNamedSize(NamedSize.Medium, typeof(Label))

       };

       var stackLayout = new StackLayout

       {

           Orientation = StackOrientation.Horizontal,

           HorizontalOptions = LayoutOptions.Center,

           Children = { image, label }

       };

       Content = stackLayout;

   }