我在轮播视图中有设置列表视图但是归档集列表视图如何选择项目为空，现在当我点击列表视图项目中的任何项目轮播视图时，它显示了默认颜色，但我们需要删除该颜色。请提出任何想法。提前谢谢。
示例代码：
<cv:CarouselView VerticalOptions = "FillAndExpand" HorizontalOptions = "FillAndExpand" Position = "{Binding DishCategory}" ItemSelected = "OnSwipeDishesHandler" ItemsSource = "{Binding RestaurantDishesList}" x:Name = "RestaurantDishesList">
<cv:CarouselView.HeightRequest>
<OnIdiom x:TypeArguments ="x:Double" Phone ="230" Tablet ="630"/>
</cv:CarouselView.HeightRequest>
<cv:CarouselView.ItemTemplate>
<DataTemplate>
<StackLayout Padding = "10,5,10,5" Orientation = "Vertical">
<ListView x:Name="RestaurantMenuListView" BackgroundColor="Transparent" ItemsSource="{Binding CategoryWiseDishes}" HasUnevenRows="true" SeparatorColor="#eeeeee">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<StackLayout Padding="7">
<Grid Padding="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<StackLayout Grid.Column="0" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
<StackLayout.GestureRecognizers>
<TapGestureRecognizer Tapped="OnMenuItemSelected"/>
</StackLayout.GestureRecognizers>
<Label Text="{Binding Name}" TextColor="Black">
<Label.FontSize>
<OnIdiom x:TypeArguments ="x:Double" Phone ="15" Tablet ="20"/>
</Label.FontSize>
</Label>
<Label Text="{Binding Description}" TextColor="#323232">
<Label.FontSize>
<OnIdiom x:TypeArguments ="x:Double" Phone ="11" Tablet ="16"/>
</Label.FontSize>
</Label>
<StackLayout Orientation="Horizontal">
<Label Text="£" TextColor="Black">
<Label.FontSize>
<OnIdiom x:TypeArguments ="x:Double" Phone ="14" Tablet ="19"/>
</Label.FontSize>
</Label>
<Label Text="{Binding Cost}" TextColor="Black">
<Label.FontSize>
<OnIdiom x:TypeArguments ="x:Double" Phone ="14" Tablet ="19"/>
</Label.FontSize>
</Label>
</StackLayout>
</StackLayout>
<StackLayout Grid.Column="1" Orientation="Horizontal" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
<Image Source="minus.png">
<Image.WidthRequest>
<OnIdiom x:TypeArguments ="x:Double" Phone ="25" Tablet ="35"/>
</Image.WidthRequest>
<Image.HeightRequest>
<OnIdiom x:TypeArguments ="x:Double" Phone ="25" Tablet ="35"/>
</Image.HeightRequest>
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="RemoveItemBtnClicked"/>
</Image.GestureRecognizers>
</Image>
<Label Text="{Binding TotalQuantity}" HorizontalOptions="Center" VerticalOptions="Center" TextColor="Black">
<Label.FontSize>
<OnIdiom x:TypeArguments="x:Double">
<OnIdiom.Phone>
<OnPlatform x:TypeArguments="x:Double" iOS="13" Android="13" WinPhone="13" />
</OnIdiom.Phone>
<OnIdiom.Tablet>
<OnPlatform x:TypeArguments="x:Double" iOS="15" Android="15" WinPhone="15" />
</OnIdiom.Tablet>
</OnIdiom>
</Label.FontSize>
</Label>
<Image Source="add.png">
<Image.WidthRequest>
<OnIdiom x:TypeArguments ="x:Double" Phone ="25" Tablet ="35"/>
</Image.WidthRequest>
<Image.HeightRequest>
<OnIdiom x:TypeArguments ="x:Double" Phone ="25" Tablet ="35"/>
</Image.HeightRequest>
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="AddItemBtnClicked"/>
</Image.GestureRecognizers>
</Image>
</StackLayout>
</Grid>
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
</DataTemplate>
</cv:CarouselView.ItemTemplate>
</cv:CarouselView>
当我点击总数量标签时，它会显示行中的默认颜色。需要删除该颜色。
答案 0 :(得分：1)
在您的xaml文件中....
<ListView x:Name="RestaurantMenuListView" BackgroundColor="Transparent" ItemsSource="{Binding CategoryWiseDishes}" HasUnevenRows="true" SeparatorColor="#eeeeee" ItemTapped="OnItemTapped">
然后在你的xaml.cs文件....
public void OnItemTapped(object sender, ItemTappedEventArgs e)
{
((ListView)sender).SelectedItem = null;
}
答案 1 :(得分：0)
如果您使用MVVM而不是“隐藏代码”，请访问本教程。
您应该使用两个Bindings或转到本教程。
http://www.geojorgx.com/programacion/collection-view-and-the-horrible-itemselectednull/
public ICommand SelectionCommand => new Command(ItemSelected);
private async void ItemSelected()
{
if (Selection != null)
{
var persondetaildata = Selection.Name;
await Shell.Current.GoToAsync($"//DetailPage?persondetaildata={persondetaildata}");
Selection = null;
}
}