3 個點表示 .net Maui 應用程序中內容頁面中的 ToolbarItems 僅在設備處於暗模式時顯示

Question

圖 1 是設備處於暗模式時的情況。

圖 2 是設備處於燈光模式時的情況。

我仍然可以單擊它並訪問我定義的 toolbarItems 但圖標不可見。

知道為什么會這樣嗎？

是風格問題嗎？ 這是我得到的 styles，我正在使用 shell

    <Style TargetType="Shell" ApplyToDerivedTypes="True">
    <Setter Property="Shell.BackgroundColor" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource Gray950}}" />
    <Setter Property="Shell.ForegroundColor" Value="{OnPlatform WinUI={StaticResource Primary}, Default={StaticResource White}}" />
    <Setter Property="Shell.TitleColor" Value="{AppThemeBinding Light={StaticResource White}, Dark={StaticResource White}}" />
    <Setter Property="Shell.DisabledColor" Value="{AppThemeBinding Light={StaticResource Gray200}, Dark={StaticResource Gray950}}" />
    <Setter Property="Shell.UnselectedColor" Value="{AppThemeBinding Light={StaticResource Gray200}, Dark={StaticResource Gray200}}" />
    <Setter Property="Shell.NavBarHasShadow" Value="False" />
    <Setter Property="Shell.TabBarBackgroundColor" Value="{AppThemeBinding Light={StaticResource White}, Dark={StaticResource Black}}" />
    <Setter Property="Shell.TabBarForegroundColor" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource White}}" />
    <Setter Property="Shell.TabBarTitleColor" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource White}}" />
    <Setter Property="Shell.TabBarUnselectedColor" Value="{AppThemeBinding Light={StaticResource Gray900}, Dark={StaticResource Gray200}}" />
</Style>

<Style TargetType="NavigationPage">
    <Setter Property="BarBackgroundColor" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource Gray950}}" />
    <Setter Property="BarTextColor" Value="{AppThemeBinding Light={StaticResource Gray200}, Dark={StaticResource White}}" />
    <Setter Property="IconColor" Value="{AppThemeBinding Light={StaticResource Gray200}, Dark={StaticResource White}}" />
</Style>

<Style TargetType="TabbedPage">
    <Setter Property="BarBackgroundColor" Value="{AppThemeBinding Light={StaticResource White}, Dark={StaticResource Gray950}}" />
    <Setter Property="BarTextColor" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource White}}" />
    <Setter Property="UnselectedTabColor" Value="{AppThemeBinding Light={StaticResource Gray200}, Dark={StaticResource Gray950}}" />
    <Setter Property="SelectedTabColor" Value="{AppThemeBinding Light={StaticResource Gray950}, Dark={StaticResource Gray200}}" />
</Style>

Answer 1

在your.xaml（以MainPage.xaml為例）中添加：

...
<ContentPage.ToolbarItems>        
      <ToolbarItem Text="Example Item"                 
                   Order="Secondary"                 
                   Priority="0" />    
</ContentPage.ToolbarItems>
...

更多信息可以參考Xamarin.Forms ToolbarItem 。