Xamarin Forms Shell 是否可以删除导航栏但保留汉堡包图标？

Question

Is there anyway to allow content to touch the top of the screen while keeping the hamburger icon. In the example below, imagine the blue background was an image, I want the blue to touch the top of the screen and have the hamburger icon overlay over the top:

I've tried the following but it just changes the colour of the bar:

<Shell 
       BackgroundColor="Transparent">

If there is no way to hide just the bar, is there anyway to hide the bar and the hamburger icon and then add the icon back manually?

EDIT: I tried but it removed the hamburger icon as well. Is there anyway to add the hamburger icon back?:

Shell.NavBarIsVisible="False"

EDIT: Just seen this implentation which is what I need but is there anyway to do this with Xamarin Shell: https://xamgirl.com/transparent-navigation-bar-in-xamarin-forms/

RESOLUTION: This has now been moved to the Xamarin Forms GitHub

Answer 1

Set the style of Shell navigation bar in Resource Dictionary

   <Shell.Resources>
        <ResourceDictionary>
            <Color x:Key="NavigationPrimary">#2196F3</Color>
            <Style x:Key="BaseStyle" TargetType="Element">
                <Setter Property="Shell.BackgroundColor" Value="Transparent" />  // set navigation bar as Transparent
                <Setter Property="Shell.ForegroundColor" Value="Blue" />
                <Setter Property="Shell.TitleColor" Value="Blue" />
                <Setter Property="Shell.DisabledColor" Value="#B4FFFFFF" />
                <Setter Property="Shell.UnselectedColor" Value="#95FFFFFF" />
                <Setter Property="Shell.TabBarBackgroundColor" Value="{StaticResource NavigationPrimary}" />
                <Setter Property="Shell.TabBarForegroundColor" Value="White"/>
                <Setter Property="Shell.TabBarUnselectedColor" Value="#95FFFFFF"/>
                <Setter Property="Shell.TabBarTitleColor" Value="White"/>
            </Style>
            <Style TargetType="TabBar" BasedOn="{StaticResource BaseStyle}" />
        </ResourceDictionary>
    </Shell.Resources>