我需要在Map大头针顶部绘制文本。我不知道如何处理这个问题。尝试使用画布绘制，但我没有成功
我拥有的代码：
在Android端：
CustomMapHandler.cs

public class CustomMapHandler : MapHandler
{
    public static readonly IPropertyMapper<IMap, IMapHandler> CustomMapper =
        new PropertyMapper<IMap, IMapHandler>(Mapper)
        {
            [nameof(IMap.Pins)] = MapPins,
        };

    public CustomMapHandler() : base(CustomMapper, CommandMapper)
    {
    }

    public CustomMapHandler(IPropertyMapper? mapper = null, CommandMapper? commandMapper = null) : base(
        mapper ?? CustomMapper, commandMapper ?? CommandMapper)
    {
    }

    public List<Marker> Markers { get; } = new();

    protected override void ConnectHandler(MapView platformView)
    {
        base.ConnectHandler(platformView);
        var mapReady = new MapCallbackHandler(this);
        PlatformView.GetMapAsync(mapReady);
    }

    private static new void MapPins(IMapHandler handler, IMap map)
    {
        if (handler is CustomMapHandler mapHandler)
        {
            mapHandler.Markers.Clear();
            mapHandler.AddPins(map.Pins);
        }
    }

    private void AddPins(IEnumerable<IMapPin> mapPins)
    {
        if (Map is null || MauiContext is null)
        {
            return;
        }

        foreach (var pin in mapPins)
        {
            var pinHandler = pin.ToHandler(MauiContext);
            if (pinHandler is IMapPinHandler mapPinHandler)
            {
                var markerOption = mapPinHandler.PlatformView;
                if (pin is CustomPin cp)
                {
                    cp.ImageSource.LoadImage(MauiContext, result =>
                    {
                        if (result?.Value is BitmapDrawable bitmapDrawable)
                        {
                            markerOption.SetIcon(BitmapDescriptorFactory.FromBitmap(bitmapDrawable.Bitmap));
                        }

                        AddMarker(Map, pin, Markers, markerOption);
                    });
                }
                else
                {
                    AddMarker(Map, pin, Markers, markerOption);
                }
            }
        }
    }

    private static void AddMarker(GoogleMap map, IMapPin pin, List<Marker> markers, MarkerOptions markerOption)
    {
        var marker = map.AddMarker(markerOption);
        pin.MarkerId = marker.Id;
        markers.Add(marker);
    }
}

MapCallbackHandler.cs

class MapCallbackHandler : Java.Lang.Object, IOnMapReadyCallback
{
    private readonly IMapHandler mapHandler;

    public MapCallbackHandler(IMapHandler mapHandler)
    {
        this.mapHandler = mapHandler;
    }

    public void OnMapReady(GoogleMap googleMap)
    {
        mapHandler.UpdateValue(nameof(IMap.Pins));
    }
}

CustomPin.cs

public class CustomPin : Pin
{
    public static readonly BindableProperty ImageSourceProperty =
        BindableProperty.Create(nameof(ImageSource), typeof(ImageSource), typeof(CustomPin));

    public ImageSource? ImageSource
    {
        get => (ImageSource?)GetValue(ImageSourceProperty);
        set => SetValue(ImageSourceProperty, value);
    }
}

MainPage.xaml.cs

void insertOnMap()
{
    var customPinFromResource = new CustomPin()
    {
       
        Label = "From Resource",
        Location = new Location(48.95049, 2.62891),
        Address = "Address3",
        ImageSource = ImageSource.FromFile("map_large_vertical_stopped_marker.png"),
        Map = map
    };
    map.Pins.Add(customPinFromResource);
    map.MoveToRegion(new MapSpan(new Location(48.95049, 2.62891), 48.95049, 2.62891));

}

MainPage.Xaml

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              xmlns:maps="clr-namespace:Microsoft.Maui.Controls.Maps;assembly=Microsoft.Maui.Controls.Maps"
             xmlns:charts="clr-namespace:TestMap.Charts"
             x:Class="TestMap.MainPage">
    
        <VerticalStackLayout>
            <Map x:Name="map" HeightRequest="400" MapType="Street" IsVisible="true"/>
        
    </VerticalStackLayout>
    

</ContentPage>

我拥有的

我需要的

以上代码之后尝试的所有操作都不起作用