在 Xamarin 中使用 Azure 推送通知时始终获取 JsonReaderException Android

Question

我正在尝试使用 azure 推送通知示例，就像在这个示例中一样 https://github.com/xamarin/customer-success-samples/tree/master/samples/Xamarin.Android/AzurePushNotification.Android

我完成了所有步骤，我可以注册设备，获取注册 ID 没有问题，但是当我尝试从 Azure 门户发送测试推送消息时，我总是收到此 JsonReaderException 错误。感谢任何帮助，谢谢。默认测试消息=

{"data":{"message":"Notification Hub test notification"}}

错误是

"Newtonsoft.Json.JsonReaderException: Error reading JObject from JsonReader. Current JsonReader item is not an object: Integer. Path ''"

和 GcmServiceBase（与示例完全一样）

namespace myapp.Droid
{
    [BroadcastReceiver(Permission = Constants.PERMISSION_GCM_INTENTS)]
    [IntentFilter(new string[] { Constants.INTENT_FROM_GCM_MESSAGE },
            Categories = new string[] { "myapp.Droid" })]
    [IntentFilter(new string[] { Constants.INTENT_FROM_GCM_REGISTRATION_CALLBACK },
            Categories = new string[] { "myapp.Droid" })]
    [IntentFilter(new string[] { Constants.INTENT_FROM_GCM_LIBRARY_RETRY },
            Categories = new string[] { "myapp.Droid" })]
    public class GcmBroadcastReceiver : GcmBroadcastReceiverBase<GcmService>
    {
        public static string[] SENDER_IDS = { "my firebase sender id" };
        public const string HUB_NAME = "my hub namespace ";
        public const string HUB_LISTEN_SECRET = "SharedAccessKey in the azure";
    }

    [Service]
    public class GcmService : GcmServiceBase
    {
        private static NotificationHub hub;

        public GcmService() : base(GcmBroadcastReceiver.SENDER_IDS) { }

        public static void Initialize(Context context)
        {
            var cs = ConnectionString.CreateUsingSharedAccessKeyWithListenAccess(
      new Java.Net.URI ("sb://" + GcmBroadcastReceiver.HUB_NAME(actually I write my hub namespace in here bcz when I write hub name ,it gives NotificationHubResourceNotFoundException error,so I write Hub Namespace) + "-ns.servicebus.windows.net/"),
                GcmBroadcastReceiver.HUB_LISTEN_SECRET);

            hub = new NotificationHub(GcmBroadcastReceiver.HUB_NAME, cs, context);
        }

        public static void Register(Context Context)
        {
            GcmClient.Register(Context, GcmBroadcastReceiver.SENDER_IDS);
        }

        protected override void OnRegistered(Context context, string registrationId)
        {
            //Receive registration Id for sending GCM Push Notifications to
            if (hub != null)
            {
                var registration = hub.Register(registrationId, "TEST");
            }
        }

        protected override void OnUnRegistered(Context context, string registrationId)
        {
            if (hub != null)
            {
                hub.Unregister();
            }
        }

        protected override void OnMessage(Context context, Intent intent)
        {
            // Push Notification arrived
            ShowLocalNotification(intent);

            // Do additiona messaging here...
        }

        private void ShowLocalNotification(Intent intent)
        {
            //Push Notification arrived
            if (intent != null || intent.Extras != null)
            {
                var msg = intent.Extras.GetString("message");

                msg = String.IsNullOrEmpty(msg) ? "No Message" : msg;

                // Instantiate the builder and set notification elements:
                Notification.Builder builder = new Notification.Builder(this)
                    .SetContentTitle("Push Notification Received")
                    .SetContentText(msg)
                    .SetDefaults(NotificationDefaults.Sound);

                // Build the notification:
                Notification notification = builder.Build();

                // Get the notification manager:
                NotificationManager notificationManager =
                    GetSystemService(Context.NotificationService) as NotificationManager;

                // Publish the notification:
                const int notificationId = 0;
                notificationManager.Notify(notificationId, notification);
            }
        }

        protected override bool OnRecoverableError(Context context, string errorId)
        {
            //Some recoverable error happened
            return true;
        }

        protected override void OnError(Context context, string errorId)
        {
            //Some more serious error happened
        }
    }
}

而mainactivity是这样的

[assembly: Permission(Name = "@PACKAGE_NAME@.permission.C2D_MESSAGE")]
[assembly: UsesPermission(Name = "@PACKAGE_NAME@.permission.C2D_MESSAGE")]
[assembly: UsesPermission(Name = "com.google.android.c2dm.permission.RECEIVE")]
[assembly: UsesPermission(Name = "android.permission.GET_ACCOUNTS")]
[assembly: UsesPermission(Name = "android.permission.INTERNET")]
[assembly: UsesPermission(Name = "android.permission.WAKE_LOCK")]

namespace AzurePushNotification.Android
{
    [Activity (Label = "myapp.Android", MainLauncher = true, Icon = "@drawable/icon")]
    public class MainActivity : Activity
    {
        protected override void OnCreate (Bundle bundle)
        {
            base.OnCreate (bundle);

            // Set our view from the "main" layout resource
            SetContentView (Resource.Layout.Main);

            // Initialize our Gcm Service Hub
            GcmService.Initialize (this);

            // Register for GCM
            GcmService.Register (this);
        }
    }
}

Answer 1

我终于找到了错误，https://www.nuget.org/packages/Xam.Plugin.AzurePushNotification/这个插件导致了这个错误。当我卸载这个时，不再error.I猜测这个azurepush插件必须单独使用，它有点覆盖了一些方法，如果你尝试直接接收推送消息 GCM.So 仅使用此插件 alone.Dont 如果您不使用此插件，请将其保留在项目中。

在 Xamarin 中使用 Azure 推送通知时始终获取 JsonReaderException Android

Always get JsonReaderException while using Azure Push Notification in Xamarin Android

c#

visual-studio

xamarin.android

azure-mobile-services

xamarin.forms