在我的 Xamarin android 项目中切换到 Android API 34 后，出现错误：应该指定 receive_exported 或 receive_not_exported 之一

Question

在我的 Xamarin Android 项目中切换到 Api 34 后，我收到错误“当接收器未专门为系统广播注册时，应指定receiver_exported 或receiver_not_exported 之一”。

Xamarin.Essentials nuget 包：1.8.1

在此输入图片描述

 protected override void OnCreate(Bundle savedInstanceState)
        {
       
            TabLayoutResource = Resource.Layout.Tabbar;
            ToolbarResource = Resource.Layout.Toolbar;
     
         
            base.OnCreate(savedInstanceState);
            Instance = this;
            //var options = new FirebaseOptions.Builder()
            //  .SetApplicationId("1:865419492128:android:4d581aa626e7df54093545")
            //  .SetApiKey("AIzaSyDpq3kXLbpzGwrtMsvH3hM3GKvGXQJMhvE")
            //  .SetDatabaseUrl("https://pianodentalclinic-839ce.firebaseio.com")
            //  .SetGcmSenderId("865419492128-vdkjet53af3kurcjsv621g00jgbdk5v5.apps.googleusercontent.com")
            //  .SetStorageBucket("pianodentalclinic-839ce.appspot.com")
            //  .Build();
            Plugin.CurrentActivity.CrossCurrentActivity.Current.Activity = this;
            FirebaseApp.InitializeApp(this);
            Rg.Plugins.Popup.Popup.Init(this);
         
            this.Window.AddFlags(WindowManagerFlags.Fullscreen);
            //ZXing.Net.Mobile.Forms.Android.Platform.Init();
            var config = new FFImageLoading.Config.Configuration()
            {
                VerboseLogging = false,
                VerbosePerformanceLogging = false,
                VerboseMemoryCacheLogging = false,
                VerboseLoadingCancelledLogging = false,
                Logger = new CustomLogger(),
            };
            ImageService.Instance.Initialize(config);
            Xamarin.Essentials.Platform.Init(this, savedInstanceState);
            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);

            DependencyService.Register<ToastNotification>();
            //if(Build.VERSION.SdkInt > BuildVersionCodes.Tiramisu)
            //{
                //Context context = Android.App.Application.Context;
               // IntentFilter intent;
                // BroadcastReceiver broadcastReceiver;
                //ContextCompat.RegisterReceiver(context, consoleCmdReceiver, intent, ContextCompat.ReceiverExported);
                //Context.RegisterReceiver(consoleCmdReceiver, IntentFilter, ReceiverExported);
            //}
            //RegisterReceiver(consoleCmdReceiver, new IntentFilter(Intent.ActionRun));
            ToastNotification.Init(this);
            CachedImageRenderer.Init(true);
            CachedImageRenderer.InitImageViewHandler();
 
            LoadApplication(new App());

            //string tkn= CrossFirebasePushNotification.Current.Token; 

            //FirebasePushNotificationManager.ProcessIntent(this, Intent);

        }

解决方案之一是安装 xamarin.essentials 1.8.0-pr.2108.1。我安装了，但是警告说包没有恢复，错误依然存在。

Answer 1

您需要使用 AndroidX 才能使用

ReceiverNotExported

（推荐）标志 为了使用 AndroidX 标志，您还需要使用 AndroidX 注册接收器，因此您的需要如下所示：

  var flags = AndroidX.Core.Content.ContextCompat.ReceiverNotExported;
  AndroidX.Core.Content.ContextCompat.RegisterReceiver(this, consoleCmdReceiver, new IntentFilter(Intent.ActionRun), flags);