FormsPlugin UWP IconImage and IconToolbarIcon not working about xamarin.plugins HOT 9 OPEN

public class ExIconNavigationRenderer : NavigationPageRenderer
{
    private CommandBar _commandBar;

    public ExIconNavigationRenderer()
    {
        ElementChanged += ExIconNavigationRenderer_ElementChanged;
    }

    private void ContainerElement_Loaded(object sender, Windows.UI.Xaml.RoutedEventArgs e)
    {
        ContainerElement.Loaded -= ContainerElement_Loaded;
        _commandBar = typeof(PageControl).GetTypeInfo().GetDeclaredField("_commandBar").GetValue(ContainerElement) as CommandBar;
        _commandBar.DataContextChanged += CommandBar_DataContextChanged;
    }

    private void CommandBar_DataContextChanged(Windows.UI.Xaml.FrameworkElement sender, Windows.UI.Xaml.DataContextChangedEventArgs args)
    {
        var toolbarItems = (args.NewValue as Xamarin.Forms.Page).ToolbarItems;
        foreach (IconToolbarItem item in toolbarItems.Where(item => item is IconToolbarItem && (item as IconToolbarItem).IsVisible))
        {
            var element = _commandBar.PrimaryCommands.Where(command => command is AppBarButton && (command as AppBarButton).DataContext == item).FirstOrDefault();
            if (element == null) continue;
            var appBarButton = element as AppBarButton;
            var icon = Plugin.Iconize.Iconize.FindIconForKey(item.Icon);
            if (icon == null) continue;
            appBarButton.Icon = new FontIcon()
            {
                FontFamily = Plugin.Iconize.Iconize.FindModuleOf(icon).ToFontFamily(),
                Glyph = $"{icon.Character}",
                Foreground = new SolidColorBrush(item.IconColor.ToWindowsColor()),
            };
        }
    }
    
    private void ExIconNavigationRenderer_ElementChanged(object sender, VisualElementChangedEventArgs e)
    {
        ElementChanged -= ExIconNavigationRenderer_ElementChanged;
        ContainerElement.Loaded += ContainerElement_Loaded;
    }
}

public class ExIconImageRenderer : IconImageRenderer
{
    protected override async void OnElementChanged(ElementChangedEventArgs<Image> e)
    {
        base.OnElementChanged(e);
        if (Control == null || Element == null)
            return;
        await UpdateImage();
    }
    protected override async void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
    {
        base.OnElementPropertyChanged(sender, e);
        if (Control == null || Element == null)
            return;

        switch (e.PropertyName)
        {
            case nameof(IconImage.Icon):
            case nameof(IconImage.IconColor):
            case nameof(IconImage.IconSize):
                await UpdateImage();
                break;
        }
    }

    private async Task UpdateImage()
    {
        var iconImage = Element as IconImage;
        var icon = Plugin.Iconize.Iconize.FindIconForKey(iconImage.Icon);
        CanvasDevice device = CanvasDevice.GetSharedDevice();
        var target = new CanvasRenderTarget(device, Convert.ToSingle(Element.HeightRequest), Convert.ToSingle(Element.HeightRequest), 96 * 4);
        using (var session = target.CreateDrawingSession())
        using (var format = new CanvasTextFormat { FontSize = Convert.ToSingle(Element.HeightRequest), FontFamily = Plugin.Iconize.Iconize.FindModuleOf(icon).ToFontFamily().Source })
        using (var textLayout = new CanvasTextLayout(device, $"{icon.Character}", format, Convert.ToSingle(Element.HeightRequest), Convert.ToSingle(Element.HeightRequest)))
            session.DrawTextLayout(textLayout, 0, 0, iconImage.IconColor.ToWindowsColor());
        using (var stream = new InMemoryRandomAccessStream())
        {
            await target.SaveAsync(stream, CanvasBitmapFileFormat.Png);
            stream.Seek(0);
            BitmapImage result = new BitmapImage();
            await result.SetSourceAsync(stream);
            Control.Source = result;
        }
    }
}

var page = pages[viewModelType];
            var detailPage = new >**IconNavigationPage**<(page);
            masterPage.ListView.SelectedItem = null;
            masterPage.SettingsListView.SelectedItem = null;

            foreach (var item in page.ToolbarItems)
            {
                detailPage.ToolbarItems.Add(item);
            }
detailPage.ToolbarItems.Add(new FormsPlugin.Iconize.IconToolbarItem() { Priority = 10, Name = "Search", Command = new Command(() => IsPresented = true) });

[assembly: ExportRenderer(typeof(IconNavigationPage), typeof(AppNavigationPageRenderer))]
[assembly: ExportRenderer(typeof(IconImage), typeof(IconImageRenderer))]
namespace ...{
    public class AppNavigationPageRenderer : NavigationPageRenderer
    {
    ...
    }
}