XF 开关控件

<?xml version="1.0" encoding="utf-8" ?>

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"

             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"

             xmlns:local="clr-namespace:App20"

             x:Class="App20.MainPage">

<StackLayout x:Name="sl" VerticalOptions="Center">

        <Switch x:Name="sw" Toggled="Switch_Toggled"></Switch>

    </StackLayout>

</ContentPage>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Xamarin.Forms;

namespace App20

{

    public partial class MainPage : ContentPage

    {

        public MainPage()

        {

            InitializeComponent();

        }

private void Switch_Toggled(object sender, ToggledEventArgs e)

        {

            if (sw.IsToggled)

            {

                sl.BackgroundColor = Color.Red;

            }

            else

            {

                sl.BackgroundColor = Color.Yellow;

}

        }

    }

}