xamarin android：在发布版中内置应用时，汉堡包菜单项消失

Question

当我在android调试版中构建xamarin.forms应用程序时，我看到了汉堡菜单项，但是在发布模式下构建时，它们就会消失。这是专门在android项目中发生的，即使用masterdetailpages，并且发生在母版页中。任何帮助将不胜感激。以下是母版页代码：

    <?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="myApp.ViewAndViewModels.BookMasterDetailPageMaster"
             xmlns:local="clr-namespace:myApp.ViewAndViewModels;assembly=myApp"
             Title="☰" BackgroundColor="#91D8F7">
    <StackLayout>
        <ListView x:Name="MenuItemsListView"
              SeparatorVisibility="None"
              HasUnevenRows="true"
              ItemsSource="{Binding MenuItems}">
            <ListView.Header>
            <StackLayout BackgroundColor="#91D8F7">
                <Image x:Name="AppImage" BackgroundColor="#91D8F7"></Image>
                <Label Text="Menu" HorizontalOptions="CenterAndExpand" 
               VerticalOptions="CenterAndExpand" FontSize="31">
                       <Label.FontFamily>
                                    <OnPlatform x:TypeArguments="x:String">
                                        <On Platform="iOS" Value="Alvi Nastaleeq" />
                                        <On Platform="Android" Value="Alvi Nastaleeq.ttf#Alvi Nastaleeq" />
                                        <On Platform="UWP">/Assets/Fonts/Alvi Nastaleeq.ttf#Alvi Nastaleeq</On>
                                    </OnPlatform>
                                </Label.FontFamily>
                </Label>
            </StackLayout>
            </ListView.Header>
            <ListView.ItemTemplate>
                <DataTemplate>
                    <ViewCell>
                        <ViewCell.View>
<Grid Grid.Row="1" ColumnSpacing="0" >

                        <StackLayout Grid.Row="1" 
                                     Orientation="Horizontal"
                                     Spacing="0"
                                     Margin="0,0">
                          <Image Source="{Binding IconImageSrc}" WidthRequest="32" HeightRequest="32"></Image>

                          <Label Text="{Binding Title}" HorizontalOptions="CenterAndExpand" 
               VerticalOptions="CenterAndExpand" FontSize="30">
                                <Label.FontFamily>
                                    <OnPlatform x:TypeArguments="x:String">
                                        <On Platform="iOS" Value="Alvi Nastaleeq" />
                                        <On Platform="Android" Value="Alvi Nastaleeq.ttf#Alvi Nastaleeq" />
                                        <On Platform="UWP">/Assets/Fonts/Alvi Nastaleeq.ttf#Alvi Nastaleeq</On>
                                    </OnPlatform>
                                </Label.FontFamily>
                            </Label>
                        </StackLayout>
                        </Grid>        
                        </ViewCell.View>
                    </ViewCell>
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>
    </StackLayout>
</ContentPage>

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

        public BookMasterDetailPageMaster()
        {
            InitializeComponent();
            AppImage.Source = ImageSource.FromResource("myApp.Assets.MainMenuIcon.png");


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

        class BookMasterDetailPageMasterViewModel : INotifyPropertyChanged
        {
            public ObservableCollection<BookMasterDetailPageMenuItem> MenuItems { get; set; }
            public ImageSource IconImageSource { get; set; }

            public BookMasterDetailPageMasterViewModel()
            {
                IconImageSource = ImageSource.FromResource("myApp.Assets.Icons.articon.png");

                MenuItems = new ObservableCollection<BookMasterDetailPageMenuItem>(new[]
                {
                    new BookMasterDetailPageMenuItem { Id = 1, Title = "Menu1",IconImageSrc = this.IconImageSource,TargetType = typeof(Menu1) },
                    new BookMasterDetailPageMenuItem { Id = 2, Title = "Menu2", IconImageSrc = this.IconImageSource },
                    new BookMasterDetailPageMenuItem { Id = 3, Title = "Menu3", IconImageSrc = this.IconImageSource },
                    new BookMasterDetailPageMenuItem { Id = 4, Title = "Menu4", IconImageSrc = this.IconImageSource },

                });
            }

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

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

Answer 1

我只是在回答，因为我还无法发表评论，因此您可以将其视为评论

如果您无法共享代码，则需要提供更多信息，代码段或示例。

Answer 2

我设法解决了这个问题。在我的特定情况下，我在发行版的xamarin android项目中使用Dotfuscator，并且一旦禁用此功能，菜单项便开始显示。