如何解决在 Collectionview 上设置选择背景颜色并保持材质波纹
<CollectionView SelectionMode="Single" WidthRequest="200" HeightRequest="144" x:Name="listViewLanguageMenu" HorizontalOptions="End" VerticalOptions="Start" ItemSizingStrategy="MeasureAllItems">
<CollectionView.ItemTemplate >
<DataTemplate >
<StackLayout Style="{StaticResource languageMenuStyle}" HeightRequest="40" Padding="25,4,5,4" Margin="0" Spacing="0" HorizontalOptions="End" VerticalOptions="Center" Orientation="Horizontal">
<Image VerticalOptions="CenterandExpand" Aspect="AspectFit" Source="{Binding ImageSourceLanguage}"></Image>
<Label VerticalOptions="CenterandExpand" FontSize="18" Margin="5,0" VerticalTextAlignment="Center" Text="{Binding LanguageName}"></Label>
</StackLayout>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
如果我像这样在 Style 中设置背景:
<Style targettype="StackLayout" x:Key="languageMenuStyle">
<Setter Property="visualstatemanager.VisualStateGroups">
<VisualStateGroupList>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Selected">
<VisualState.Setters>
<Setter Property="SelectableItemBackground" Value="{StaticResource buttonBackgroundColor}"/>
<Setter Property="Visual" Value="Material"></Setter>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="normal" >
<VisualState.Setters>
<Setter Property="Visual" Value="Material"></Setter>
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateGroupList>
</Setter>
</Style>
选择颜色现在已成功更改,但我不再拥有标准颜色在选择时的材质波纹。如何更改选择颜色并产生材质波纹?
谢谢。
您好,
嗯
解决方法
我用你的代码来测试,你为stacklayout创建了languageMenuStyle样式,但是stacklayout没有SelectableItemBackground属性,我修改了stacklayout的languageMenuStyle,在改变collectionview选择颜色时collectionview仍然有材质波纹。
<Style x:Key="languageMenuStyle" TargetType="StackLayout">
<Setter Property="VisualStateManager.VisualStateGroups">
<VisualStateGroupList>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="Selected">
<VisualState.Setters>
<Setter Property="BackgroundColor" Value="Green" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateGroupList>
</Setter>
</Style>
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