我正在尝试在开发模式下在 azure 推送通知中心中使用标记注册设备 token ，但在 azure 门户中它显示已注册 0 个事件设备，当我检查通知中心时，它将显示发生了一个注册。
这是我的示例代码:
应用程序委托(delegate):
var deviceTokenDes = deviceToken.Description;
if (!string.IsNullOrWhiteSpace(deviceTokenDes))
{
deviceTokenDes = deviceTokenDes.Trim('<');
deviceTokenDes = deviceTokenDes.Trim('>');
deviceTokenDes = deviceTokenDes.Replace(" ", "");
DeviceToken = deviceTokenDes.Trim('<');
DeviceToken = deviceTokenDes.Trim('>');
DeviceToken = deviceTokenDes.Replace(" ", "");
}
Hub = new SBNotificationHub(myapp.ListenConnectionString, myapp.NotificationHubName);
登录 View 模型:
var tags = new List<string> { userId };
AppDelegate.Hub?.UnregisterAllAsync(AppDelegate.DeviceToken, error =>
{
if (error != null)
{
Console.WriteLine("Error calling Unregister: {0}", error);
}
AppDelegate.Hub.RegisterNativeAsync(AppDelegate.DeviceToken, new NSSet(tags.ToArray()), errorCallback =>
{
if (errorCallback != null)
{
Console.WriteLine("RegisterNativeAsync error: " + errorCallback.ToString());
}
});
用户成功登录应用程序后，我已使用标签注册了设备 token 。你能建议一下吗？ 
最佳答案
这就是我们在 AppDelegate 类中所做的全部事情。
public override async void RegisteredForRemoteNotifications(UIApplication application, NSData deviceToken)
{
bool ShouldComplete = true;
// Validate if we have already got a registration
try
{
string validation = NSUserDefaults.StandardUserDefaults.StringForKey("InitialTagRegistration");
if (validation.Contains("Completed"))
{
ShouldComplete = false;
}
}
catch (Exception genEx)
{
ApplicationLog.AppendFile(DateTime.Now.ToString() + " : " + "[EXCEPTION] - Exception has been hit! - Message: " + genEx.Message + " | Source: " + genEx);
}
Hub = new SBNotificationHub(ConfigurableSettings.NotificationHubConnectionString, ConfigurableSettings.NotificationHubPathName);
ApplicationState.SetValue("NotificationHub", Hub);
// Get previous device token
NSData oldDeviceToken = await ApplicationSettings.RetrieveDeviceToken();
// If the token has changed unregister the old token and save the new token to UserDefaults.
if (oldDeviceToken != null)
{
if (oldDeviceToken.ToString() != deviceToken.ToString())
{
try
{
Hub.UnregisterAllAsync(oldDeviceToken, (error) =>
{
//check for errors in unregistration process.
if (error != null)
{
ApplicationLog.AppendFile(DateTime.Now.ToString() + " : " + "[PNS EXCEPTION] - Exception has been hit! - Message: " + error + " | Source: " + "Unregistering old device token against the notification hub.");
//exit out of the code here because we can't keep our hub clean without being able to remove the device from our registration list.
return;
}
else
{
ShouldComplete = true;
}
});
}
catch (Exception genEx)
{
ApplicationLog.AppendFile(DateTime.Now.ToString() + " : " + "[PNS EXCEPTION] - Exception has been hit! - Message: " + genEx.Message + " | Source: " + genEx + Environment.NewLine + Environment.NewLine);
}
}
}
else
{
// Store current device token
bool res = await ApplicationSettings.CacheDeviceToken(deviceToken);
}
// Check if we need to perform our initial registrations
if (ShouldComplete)
{
NSSet RegisteredTags = await ApplicationSettings.RetrieveUserTags();
if (RegisteredTags == null)
{
RegisteredTags = new NSSet("AppleDevice");
}
//Register the device against the notification hub keeping the details accurate at all times.
Hub.RegisterNativeAsync(deviceToken, RegisteredTags, (errorCallback) =>
{
if (errorCallback != null)
{
ApplicationLog.AppendFile(DateTime.Now.ToString() + " : " + "[PNS EXCEPTION] - Exception has been hit! - Message: " + errorCallback + " | Source: " + "Registering device token against the notification hub.");
}
else
{
if (deviceToken != null)
{
NSUserDefaults.StandardUserDefaults.SetString("Completed", "InitialTagRegistration");
NSUserDefaults.StandardUserDefaults.Synchronize();
}
}
});
}
}
总而言之，在将设备 token 传递到 azure 通知中心之前，您不需要对设备 token 执行任何操作。这就是为我们解决了问题的原因，我们的应用程序已经在事件应用程序中运行了几个月，没有任何问题。希望这会有所帮助。
编辑:为了在用户登录时更新标签，我们存储设备 token 以供稍后使用，并且当用户登录时，我们在单独的类中使用以下方法来方便更新标签:
public static async Task<bool> UpdateTags(StaffProfile user)
{
//Get the instance of the Notification hub
SBNotificationHub UpdateHub = new SBNotificationHub(ConfigurableSettings.NotificationHubConnectionString, ConfigurableSettings.NotificationHubPathName);
//Grab the current device token that was stored during the start up process.
NSData CurrentDeviceToken = await ApplicationSettings.RetrieveDeviceToken();
//Get and create the tags we want to use.
string EmailTag = string.Empty;
string StoreTag = string.Empty;
string OrganisationTag = "AppleDevice:OrgTag";
string GenericTag = "AppleDevice:StaffTag";
if (!string.IsNullOrWhiteSpace(user.Email))
{
EmailTag = user.Email;
//Remove unwanted spaces and symbols.
EmailTag = EmailTag.Replace(" ", "");
EmailTag = string.Format("AppleDevice:{0}", EmailTag);
}
if (!string.IsNullOrWhiteSpace(user.Store?.Name))
{
StoreTag = user.Store.Name;
//Remove unwanted space.
StoreTag = StoreTag.Replace(" ", "");
StoreTag = string.Format("AppleDevice:{0}", StoreTag);
}
//Create array of strings to the currently fixed size of 3 items.
NSString[] TagArray = new NSString[4];
//Only add in the tags that contain data.
if (!string.IsNullOrEmpty(EmailTag)) { TagArray[0] = (NSString)EmailTag; }
if (!string.IsNullOrEmpty(StoreTag)) { TagArray[1] = (NSString)StoreTag; }
if (!string.IsNullOrEmpty(OrganisationTag)) { TagArray[2] = (NSString)OrganisationTag; }
if (!string.IsNullOrEmpty(GenericTag)) { TagArray[3] = (NSString)GenericTag; }
NSSet tags = new NSSet(TagArray);
// Store our tags into settings
ApplicationSettings.CacheUserTags(tags);
try
{
if (CurrentDeviceToken == null)
{
ApplicationLog.AppendFile(DateTime.Now.ToString() + " : " + "[PNS EXCEPTION] - Exception has been hit! - Message: Device token is empty." + Environment.NewLine + Environment.NewLine);
}
else
{
UpdateHub.RegisterNativeAsync(CurrentDeviceToken, tags, (error) =>
{
//check for errors in unregistration process.
if (error != null)
{
ApplicationLog.AppendFile(DateTime.Now.ToString() + " : " + "[PNS EXCEPTION] - Exception has been hit! - Message: " + error + " | Source: " + "Registering against hub with new tags." + Environment.NewLine + Environment.NewLine);
// Lets do this so that we can force the initial registration to take place again.
NSUserDefaults.StandardUserDefaults.SetString("Failed", "InitialTagRegistration");
NSUserDefaults.StandardUserDefaults.Synchronize();
}
else
{
ApplicationLog.AppendFile(DateTime.Now.ToString() + " : " + "[INFORMATION] - Message: Successful Registration - Source: Registering against hub with new tags." + Environment.NewLine + Environment.NewLine);
}
});
}
}
catch (Exception genEx)
{
ApplicationLog.AppendFile(DateTime.Now.ToString() + " : " + "[PNS EXCEPTION] - Exception has been hit! - Message: " + genEx.Message + " | Source: " + genEx + Environment.NewLine + Environment.NewLine);
}
return await Task.FromResult(true);
}
关于azure - 设备未以 xamarin 形式在 azure 推送通知中心注册，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45668244/