[C#/MAUI/.NET6] VisualStateManager 엘리먼트 : VisualStateGroups 첨부 속성을 CollectionView 객체에서 사용해 선택 항목 색상 변경하기

TestProject.zip

0.15MB

▶ MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:local="clr-namespace:TestProject">
    <ContentPage.Resources>
        <local:ImageSourceConverter x:Key="ImageSourceConverterKey" />
        <Style TargetType="Grid">
            <Setter Property="VisualStateManager.VisualStateGroups">
                <VisualStateGroupList>
                    <VisualStateGroup x:Name="CommonStates">
                        <VisualState x:Name="Normal">
                            <VisualState.Setters>
                                <Setter Property="BackgroundColor" Value="White" />
                            </VisualState.Setters>
                        </VisualState>
                        <VisualState x:Name="Selected">
                            <VisualState.Setters>
                                <Setter Property="BackgroundColor" Value="LightSkyBlue" />
                            </VisualState.Setters>
                        </VisualState>
                    </VisualStateGroup>
                </VisualStateGroupList>
            </Setter>
        </Style>
    </ContentPage.Resources>
    <CollectionView x:Name="collectionView"
        SelectionMode="Single">
        <CollectionView.ItemTemplate>
            <DataTemplate>
                <Grid
                    Padding="10"
                    RowDefinitions="Auto"
                    ColumnDefinitions="Auto,10,*">
                    <Image Grid.Column="0"
                        WidthRequest="60"
                        HeightRequest="60"
                        Aspect="AspectFill"
                        Source="{Binding ImageURL, Converter={StaticResource ImageSourceConverterKey}}" />
                    <StackLayout Grid.Column="2">
                        <Label
                            FontAttributes="Bold"
                            FontSize="16"
                            Text="{Binding Name}" />
                        <Label
                            VerticalOptions="End"
                            FontAttributes="Italic"
                            Text="{Binding Location}" />
                    </StackLayout>
                </Grid>
            </DataTemplate>
        </CollectionView.ItemTemplate>
    </CollectionView>
</ContentPage>

 

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▶ MainPage.xaml.cs

namespace TestProject;

/// <summary>
/// 메인 페이지
/// </summary>
public partial class MainPage : ContentPage
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 생성자 - MainPage()

    /// <summary>
    /// 생성자
    /// </summary>
    public MainPage()
    {
        InitializeComponent();

        List<Monkey> list = new List<Monkey>();

        for(int i = 0; i < 10; i++)
        {
            list.Add
            (
                new Monkey
                {
                    Name     = "Baboon",
                    Location = "Africa and Asia",
                    ImageURL = "https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Papio_anubis_%28Serengeti%2C_2009%29.jpg/200px-Papio_anubis_%28Serengeti%2C_2009%29.jpg"
                }
            );

            list.Add
            (
                new Monkey
                {
                    Name     = "Capuchin Monkey",
                    Location = "Central and South America",
                    ImageURL = "https://upload.wikimedia.org/wikipedia/commons/thumb/4/40/Capuchin_Costa_Rica.jpg/200px-Capuchin_Costa_Rica.jpg"
                }
            );

            list.Add
            (
                new Monkey
                {
                    Name     = "Blue Monkey",
                    Location = "Central and East Africa",
                    ImageURL = "https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/BlueMonkey.jpg/220px-BlueMonkey.jpg"
                }
            );
        }

        this.collectionView.ItemsSource = list;
    }

    #endregion
}