Xamarin.forms Xamarin窗体外壳弹出项已禁用VisualState不工作
我无法使用XAML中的VisualStates更改禁用的弹出项(IsEnabled=False)的样式。它已正确禁用,因为我无法单击它Xamarin.forms Xamarin窗体外壳弹出项已禁用VisualState不工作,xamarin.forms,xamarin.forms-styles,xamarin.forms.shell,Xamarin.forms,Xamarin.forms Styles,Xamarin.forms.shell,我无法使用XAML中的VisualStates更改禁用的弹出项(IsEnabled=False)的样式。它已正确禁用,因为我无法单击它 <?xml version="1.0" encoding="UTF-8"?> <Shell xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:views=
<?xml version="1.0" encoding="UTF-8"?>
<Shell xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:views="clr-namespace:MyApp.Views"
xmlns:volDash="clr-namespace:MyApp.Views.VolDash"
xmlns:orgDash="clr-namespace:MyApp.Views.OrgDash"
x:Class="MyApp.AppShell"
FlyoutBackgroundColor="#337ab7">
<Shell.Resources>
<Style x:Key="FlyoutItemStyle" TargetType="Grid">
<Setter Property="VisualStateManager.VisualStateGroups">
<VisualStateGroupList>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="Selected">
<VisualState.Setters>
<Setter Property="BackgroundColor" Value="Red"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="Disabled">
<VisualState.Setters>
<Setter Property="BackgroundColor" Value="Green"/>
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateGroupList>
</Setter>
</Style>
</Shell.Resources>
<Shell.ItemTemplate>
<DataTemplate>
<Grid HeightRequest="{x:OnPlatform Android=50}" Style="{StaticResource FlyoutItemStyle}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="{x:OnPlatform Android=54, iOS=50}"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Image Source="{Binding FlyoutIcon}"
VerticalOptions="Center"
HorizontalOptions="Center"
HeightRequest="{x:OnPlatform Android=24, iOS=22}"
WidthRequest="{x:OnPlatform Android=24, iOS=22}">
</Image>
<Label VerticalOptions="Center"
Text="{Binding Title}"
FontSize="{x:OnPlatform Android=14, iOS=Small}"
FontAttributes="Bold" Grid.Column="1">
<Label.TextColor>
<OnPlatform x:TypeArguments="Color">
<OnPlatform.Platforms>
<On Platform="Android" Value="#D2000000" />
</OnPlatform.Platforms>
</OnPlatform>
</Label.TextColor>
<Label.Margin>
<OnPlatform x:TypeArguments="Thickness">
<OnPlatform.Platforms>
<On Platform="Android" Value="20, 0, 0, 0" />
</OnPlatform.Platforms>
</OnPlatform>
</Label.Margin>
<Label.FontFamily>
<OnPlatform x:TypeArguments="x:String">
<OnPlatform.Platforms>
<On Platform="Android" Value="sans-serif-medium" />
</OnPlatform.Platforms>
</OnPlatform>
</Label.FontFamily>
</Label>
</Grid>
</DataTemplate>
</Shell.ItemTemplate>
<FlyoutItem x:Name="volFlyoutItem" Title="Volunteer Dashboard" FlyoutDisplayOptions="AsSingleItem" FlyoutIcon="ic_dashboard_white.png">
<ShellContent Title="Signups" Icon="ic_assignment.png">
<volDash:SignupsPage />
</ShellContent>
<ShellContent Title="Events" Icon="ic_event.png">
<volDash:AreasPage />
</ShellContent>
<ShellContent Title="Mailbox" Icon="ic_mail_outline.png">
<volDash:MailboxPage />
</ShellContent>
<ShellContent Title="Rankings" Icon="fa_trophy.png">
<volDash:MyRankingsPage />
</ShellContent>
<ShellContent Title="Videos" Icon="ic_ondemand_video.png">
<volDash:TrainingVideoCategoriesPage />
</ShellContent>
</FlyoutItem>
<FlyoutItem x:Name="orgFlyoutItem" Title="Organizer Dashboard" FlyoutDisplayOptions="AsSingleItem" FlyoutIcon="ic_dashboard_white.png" IsEnabled="False">
<ShellContent Title="Events" Icon="ic_event.png">
<orgDash:EventsPage />
</ShellContent>
</FlyoutItem>
<ShellContent Title="Account" Icon="ic_account_box_white.png">
<views:AccountPage />
</ShellContent>
<MenuItem Text="Logout"
Icon="ic_dashboard_white.png"
Command="{Binding LogOutCommand}" />
</Shell>
您是否希望获得如下效果 如果是这样,您可以像下面的代码那样更改样式
<Style x:Key="FlyoutItemStyle" TargetType="Grid">
<Setter Property="VisualStateManager.VisualStateGroups">
<VisualStateGroupList>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" >
<VisualState.Setters>
<Setter Property="BackgroundColor" Value="Green"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="Selected">
<VisualState.Setters>
<Setter Property="BackgroundColor" Value="Red"/>
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateGroupList>
</Setter>
</Style>
这是跑步
我需要让机器开始工作。“正常”和“选定”都正常。“Organizer Dashboard”弹出项具有IsEnabled=“False”标志。在这种情况下,用户不能点击它。我现在需要使用它,因为没有IsVisible标志。
<Grid HeightRequest="{x:OnPlatform Android=50}" Style="{StaticResource FlyoutItemStyle}" IsVisible="{Binding IsEnabled}">