[.NET MAUI]iOSトラッキング確認ダイアログの表示方法

using UIKit;
using AppTrackingTransparency;

namespace YourAppNamespace.Platforms.iOS
{
    public static class AppTrackingTransparencyManager
    {
        public static void RequestPermission()
        {
            // iOS 14以降かチェック
            if (UIDevice.CurrentDevice.CheckSystemVersion(14, 0))
            {
                ATTrackingManager.RequestTrackingAuthorization((status) =>
                {
                    Console.WriteLine($"ATT Status: {status}");

                    switch (status)
                    {
                        case ATTrackingManagerAuthorizationStatus.Authorized:
                            Console.WriteLine("Tracking authorized.");
                            break;
                        case ATTrackingManagerAuthorizationStatus.Denied:
                            Console.WriteLine("Tracking denied.");
                            break;
                        case ATTrackingManagerAuthorizationStatus.NotDetermined:
                            Console.WriteLine("Tracking not determined.");
                            break;
                        case ATTrackingManagerAuthorizationStatus.Restricted:
                            Console.WriteLine("Tracking restricted.");
                            break;
                    }
                });
            }
            else
            {
                Console.WriteLine("iOS version < 14: tracking automatically allowed.");
            }
        }
    }
}

using Foundation;
using UIKit;
using Google.MobileAds;
using YourAppNamespace.Platforms.iOS;

namespace YourAppNamespace
{
    [Register("AppDelegate")]
    public class AppDelegate : MauiUIApplicationDelegate
    {
        public override bool FinishedLaunching(UIApplication app, NSDictionary options)
        {
            // ATT許可ダイアログを表示
            AppTrackingTransparencyManager.RequestPermission();

            // AdMob初期化
            MobileAds.SharedInstance.Start(completionHandler: null);

            return base.FinishedLaunching(app, options);
        }
    }
}

<key>NSUserTrackingUsageDescription</key>
<string>このアプリでは、広告のパーソナライズのためにユーザーの識別子を使用します。</string>