[英]How do I change the color of a selected item on a ListView?
I'm creating a ListView that has some simple items inside a ViewCell.我正在创建一个 ListView,它在 ViewCell 中有一些简单的项目。
When I select one of the items it becomes orange.当我选择其中一项时,它会变成橙色。 When I click and hold (to open the context actions) it becomes white...
当我单击并按住(打开上下文操作)时,它变成白色...
<ListView ItemsSource="{Binding Items}" HasUnevenRows="True">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<ViewCell.ContextActions>
<MenuItem Text="Delete" />
</ViewCell.ContextActions>
<StackLayout Orientation="Horizontal" Padding="20">
<StackLayout HorizontalOptions="StartAndExpand">
<Label Text="{Binding Name}" FontSize="Large" FontAttributes="Bold" />
<Label Text="{Binding Description}" />
</StackLayout>
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
How can I customize these colors?如何自定义这些颜色?
I found out that I have to customize it directly on Android.我发现我必须直接在Android上自定义它。
To use the theme I changed Droid/Properties/AssemblyInfo.cs
adding:为了使用主题,我更改了
Droid/Properties/AssemblyInfo.cs
添加:
[assembly: Application(Theme = "@style/AppStyle.Light")]
And I created some files on:我在以下位置创建了一些文件:
Droid\\Resources\\values
机器人\\资源\\值
colors.xml
contains the color definitions for my theme: colors.xml
包含我的主题的颜色定义:
<?xml version="1.0" encoding="utf-8" ?>
<resources>
<color name="ListViewSelected">#96BCE3</color>
<color name="ListViewHighlighted">#E39696</color>
</resources>
styles.xml
contains the theme settings: styles.xml
包含主题设置:
<?xml version="1.0" encoding="utf-8" ?>
<resources>
<style name="AppStyle.Light" parent="android:style/Theme.Material.Light.DarkActionBar">
<item name="android:colorPressedHighlight">@color/ListViewSelected</item>
<item name="android:colorLongPressedHighlight">@color/ListViewHighlighted</item>
<item name="android:colorFocusedHighlight">@color/ListViewSelected</item>
<item name="android:colorActivatedHighlight">@color/ListViewSelected</item>
<item name="android:activatedBackgroundIndicator">@color/ListViewSelected</item>
</style>
</resources>
Using these names I can change the listview style.使用这些名称,我可以更改列表视图样式。
android:colorPressedHighlight
android:colorLongPressedHighlight
android:colorFocusedHighlight
android:colorActivatedHighlight
android:activatedBackgroundIndicator
References can be found on developer.android.com R.attr参考资料可以在developer.android.com R.attr上找到
Late to the party but the problem has been solved in the CollectionView
https://docs.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/collectionview/selection#change-selected-item-color聚会迟到但问题已在
CollectionView
https://docs.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/collectionview/selection#change-selected-item-color 中得到解决
<ContentPage.Resources>
<Style 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="LightSkyBlue" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateGroupList>
</Setter>
</Style>
</ContentPage.Resources>
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