MAUI Essentials 获取移动运营商名称

可以参考以下步骤，在 Xamarin.Forms 上将平台代码作为依赖项服务调用。

步骤1：实现获取 Android 和 iOS 运营商信息的函数：

对于Android：

将以下代码添加到 .MainActivity

public static MainActivity Instance { get; private set; }  
   protected override void OnCreate(Bundle savedInstanceState)  
   {  
       base.OnCreate(savedInstanceState);  
       Instance = this;  
   }

创建帮助程序类以获取运营商信息。

public static class GetCarrierHelper  
   {  
       public static string GetCarrierName()  
       {  
           TelephonyManager manager = MainActivity.Instance.GetSystemService(Context.TelephonyService) as TelephonyManager;  
           String carrierName = manager.NetworkOperatorName;  
           return carrierName;  
       }  
   }

对于 iOS，您需要创建以下帮助程序类：

public static class GetCarrierHelper  
   {  
       public static string GetCarrierName()  
       {  
           using (var info = new CTTelephonyNetworkInfo())  
           {  
               CTCarrier cTCarrier = (CTCarrier)info.ServiceSubscriberCellularProviders.ValueForKey((NSString)info.DataServiceIdentifier);  
               // You could get the CTCarrier according to DataServiceIdentifier key, then return the CarrierName. CTCarrier and its CarrierName property was deprecated  
               return cTCarrier.CarrierName;  
           }  
       }  
   }

步骤2：调用平台代码：

private async void Button_Clicked(object sender, EventArgs e)  
   {  
   #if ANDROID  
           var name = MauiApp9.Platforms.Android.GetCarrierHelper.GetCarrierName();  
   #elif IOS  
       var name = MauiApp9.Platforms.iOS.GetCarrierHelper.GetCarrierName();  
   #endif  
   }

如需更多信息，您可以查看 调用平台代码。