汉堡菜单Xamarin表格（MasterDetailPage）

Question

我已经足够使用Xamarin了，在我的Xamarin Forms项目中我创建了一个Master-Detail页面，在ListView中代表了我想要放置标题和图标的菜单，对于图标图像，我必须在所有设备项目中插入每个图标？

我也有一个小问题，当我点击菜单项并导航到选定的详细信息页面时，汉堡包菜单消失

MainPageMaster.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"
             x:Class="XXX"
             Title="Master">
  <StackLayout>
    <ListView x:Name="MenuItemsListView"
              SeparatorVisibility="None"
              HasUnevenRows="true"
              ItemsSource="{Binding MenuItems}">
      <ListView.Header>
        <Grid BackgroundColor="#03A9F4">
          <Grid.ColumnDefinitions>
            <ColumnDefinition Width="6"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="6"/>
          </Grid.ColumnDefinitions>
          <Grid.RowDefinitions>
            <RowDefinition Height="15"/>
            <RowDefinition Height="30"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="10"/>
          </Grid.RowDefinitions>
          <Label
              Grid.Column="1"
              Grid.Row="1"
              Text="B1 Term"
              HorizontalTextAlignment="Center"
              Style="{DynamicResource SubtitleStyle}"/>
        </Grid>
      </ListView.Header>
      <ListView.ItemTemplate>
        <DataTemplate>
          <ViewCell>
              <StackLayout VerticalOptions="FillAndExpand"
                             Orientation="Horizontal"
                             Padding="20,10,0,10"
                             Spacing="20">
                            <Image Source="{Binding Icon}"
                         WidthRequest="40"
                         HeightRequest="40"
                         VerticalOptions="Center" />
                            <Label Text="{Binding Title}"
                         FontSize="Medium"
                         VerticalOptions="Center"
                         TextColor="Black"/>
            </StackLayout>
          </ViewCell>
        </DataTemplate>
      </ListView.ItemTemplate>
    </ListView>
  </StackLayout>
</ContentPage>

文件.cs

[XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class MainPageMaster : ContentPage
    {
        public ListView ListView;

        public MainPageMaster()
        {
            InitializeComponent();

            BindingContext = new MainPageMasterViewModel();
            ListView = MenuItemsListView;
        }

        class MainPageMasterViewModel : INotifyPropertyChanged
        {
            public ObservableCollection<MainPageMenuItem> MenuItems { get; set; }

            public MainPageMasterViewModel()
            {
                MenuItems = new ObservableCollection<MainPageMenuItem>(new[]
                {
                    new MainPageMenuItem { Id = 0, Icon="ic_menu_home.png",Title = "Home", TargetType = typeof(MainPageDetail) },
                    new MainPageMenuItem { Id = 1, Title = "Elenco Clienti", TargetType = typeof(ElencoClientiPage) },
                    new MainPageMenuItem { Id = 2, Title = "Logout", TargetType = typeof(LogOut) }
                });
            }

            #region INotifyPropertyChanged Implementation
            public event PropertyChangedEventHandler PropertyChanged;
            void OnPropertyChanged([CallerMemberName] string propertyName = "")
            {
                if (PropertyChanged == null)
                    return;

                PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
            }
            #endregion
        }
    }

屏幕

在此图像中，我的图标不可见，但我在Android项目中添加了图像