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var builder = MauiApp.CreateBuilder();       builder.UseMauiApp<App>()
#if __ANDROID__
    .ConfigureMauiHandlers(handlers =>
    {                    
    handlers.AddCompatibilityRenderer(typeof(Microsoft.Maui.Controls.BoxView), typeof(MyBoxRenderer));
#endif            
    });
return builder;

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#if __ANDROID__
Microsoft.Maui.Handlers.ButtonHandler.ButtonMapper["MyCustomization"] = (handler, view) =>
{
handler.NativeView.SetBackgroundColor(Android.Graphics.Color.Green);
      };
   #endif
   }
}

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using Microsoft.Maui;
using Microsoft.Maui.Hosting;
 
public static class MauiProgram
{
    public static MauiApp CreateMauiApp()
    {
        var builder = MauiApp.CreateBuilder();
        builder
            .UseMauiApp<App>()        

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using Microsoft.Maui;
using Microsoft.Maui.Controls;
 
public partial class App : Application
{
    public App()
    {
        InitializeComponent();
        MainPage = new MainPage();
    }

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using Microsoft.Maui;
using Microsoft.Maui.Hosting;
 
public static class MauiProgram
{
    public static MauiApp CreateMauiApp()
    {
        var builder = MauiApp.CreateBuilder();	
        builder
            .UseMauiApp<App>()

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public class Program
{
   public static void Main(string[] args)
   {
      CreateHostBuilder(args).Build().Run();
   }
 
   public static IHostBuilder CreateHostBuilder(string[] args) =>
      Host.CreateDefaultBuilder(args)
          .ConfigureWebHostDefaults(webBuilder =>

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public static void MapText(MyButtonHandler handler, IMyButton button)
{
    handler.NativeView?.SetTitle(button.Text, UIControlState.Normal);
}

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public static PropertyMapper<IMyButton, MyButtonHandler> MyButtonMapper = new PropertyMapper<IMyButton, MyButtonHandler >(ViewHandler.ViewMapper)
{
    [nameof(ICustomEntry.Text)] = MapText,
    [nameof(ICustomEntry.TextColor)] = MapTextColor
};

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protected override UIButton CreateNativeView()
{
    return new UIButton();
}

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public partial class MyButtonHandler : 
   ViewHandler<IMyButton, UIButton>
{
 
}