我尝试使用Xamarin和Xamarin.Firebase.iOS.CloudMessaging包为我的iOS应用程序实现推送通知。
我已经完成了所有设置和工作，例如：当应用程序位于前台时，我可以接收通知（包含并且不包含＆＃34; content-available"标记）并与它们进行交互（点击通知等）。
但是，当应用程序在后台时，我会收到通知但是，不会调用任何回调。根据我的理解，{：1}}应在以下时间调用：
"didReceiveRemoteNotification"标记是否已启用"content-available"标记以下是我在AppDelegate.cs中实现的功能：
"content-available"我已经在iOS 10.3.3和iOS 11.2上试过了这些。以下是两个版本调用的函数：
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
global::Xamarin.Forms.Forms.Init();
Firebase.Core.App.Configure();
FireBaseRegistration();
return base.FinishedLaunching(app, options);
}
private void FireBaseRegistration()
{
// Register your app for remote notifications.
if (UIDevice.CurrentDevice.CheckSystemVersion(10, 0))
{
// iOS 10 or later
var authOptions = UNAuthorizationOptions.Alert | UNAuthorizationOptions.Badge | UNAuthorizationOptions.Sound;
UNUserNotificationCenter.Current.RequestAuthorization(authOptions, (granted, error) => {
Console.WriteLine(granted);
});
// For iOS 10 display notification (sent via APNS)
UNUserNotificationCenter.Current.Delegate = this;
}
else
{
// iOS 9 or before
var allNotificationTypes = UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound;
var settings = UIUserNotificationSettings.GetSettingsForTypes(allNotificationTypes, null);
UIApplication.SharedApplication.RegisterUserNotificationSettings(settings);
}
//Register for APNs notifications
UIApplication.SharedApplication.RegisterForRemoteNotifications();
Messaging.SharedInstance.Delegate = this;
var token = InstanceId.SharedInstance.Token;
Debug.WriteLine(token);
//////Connect to FCM (Only used for Foreground notifications)
Messaging.SharedInstance.ShouldEstablishDirectChannel = true;
// Monitor token generation
InstanceId.Notifications.ObserveTokenRefresh((sender, e) => {
// Note that this callback will be fired everytime a new token is generated, including the first
// time. So if you need to retrieve the token as soon as it is available this is where that
// should be done.
token = InstanceId.SharedInstance.Token;
Console.WriteLine(token);
});
}
//Register APNs token because method swizzling is de-activated
public override void RegisteredForRemoteNotifications(UIApplication application, NSData deviceToken)
{
Console.WriteLine("Registered for remote notifications");
Console.WriteLine(deviceToken.GetBase64EncodedString(NSDataBase64EncodingOptions.None));
Console.WriteLine(deviceToken);
}
[Export("messaging:didReceiveMessage:")]
public void DidReceiveMessage(Messaging messaging, RemoteMessage remoteMessage)
{
// Do your magic to handle the notification data
Console.WriteLine("iOS 11 Foreground");
}
//Shows local notification and is called when user taps notification
[Export("userNotificationCenter:DidReceiveRemoteNotification:withCompletionHandler:")]
public override void DidReceiveRemoteNotification(UIApplication application, NSDictionary userInfo, Action<UIBackgroundFetchResult> completionHandler)
{
Console.WriteLine("Received a notficaiton");
completionHandler(UIBackgroundFetchResult.NewData);
}
//To receive notifications in foreground on iOS 11 devices.
[Export("userNotificationCenter:willPresent:withCompletionHandler:")]
public void WillPresent(UNUserNotificationCenter center, UNNotification notification, Action<UNNotificationPresentationOptions> completionHandler)
{
Console.WriteLine("Handling iOS 11 foreground notification");
completionHandler(UNNotificationPresentationOptions.Sound | UNNotificationPresentationOptions.Alert);
}
////Called when tapping notification
[Export("userNotificationCenter:didReceiveNotificationResponse:withCompletionHandler:")]
public void DidReceiveNotificationResponse(UNUserNotificationCenter center, UNNotificationResponse response, Action completionHandler)
{
Console.WriteLine("Handling push notificaiton interaction");
completionHandler();
}
//Receive data message on iOS 10 devices.
public void ApplicationReceivedRemoteMessage(RemoteMessage remoteMessage)
{
Console.WriteLine("Handling iOS 10 data message notification");
}
//// To receive notifications in foreground on iOS 10 devices.
[Export("userNotificationCenter:willPresentNotification:withCompletionHandler:")]
public void WillPresentNotification(UNUserNotificationCenter center, UNNotification notification, Action<UNNotificationPresentationOptions> completionHandler)
{
Console.WriteLine("Handling foreground notification");
completionHandler(UNNotificationPresentationOptions.Alert);
}
（包含和不包含WillPresentNotification()标记）"content-available"（包含和不包含WillPresentNotification()标记）"content-available"？DidReceiveRemoteNotification？我在Info.plist文件中激活了远程通知和后台获取后台模式。
包裹信息：
说明：
DidReceiveRemoteNotification函数在Xamarin示例中实现，但在我的情况下，永远不会被调用。
当用户点击通知时，会调用DidReceiveMessage。
DidReceiveNotificationResponse也永远不会被调用。
我已尝试通过firebase API直接通过APN（使用推送器应用程序）发送通知。