Firebase远程通知未收到？
我正在尝试通过云端消息从Firebase控制台发送远程通知，但我的手机没有收到任何警报。 我已将证书上传到Firebase，并且我使用Firebase教程提供的默认代码来接收通知。
这是我的证书图片，显示我已经创建了它 
这是我的代码，我也在其中实现了它。 class AppDelegate：UIResponder，UIApplicationDelegate {
var window: UIWindow? override init() { FIRApp.configure() FIRDatabase.database().persistenceEnabled = true } func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { // Override point for customization after application launch. let notificationTypes : UIUserNotificationType = [UIUserNotificationType.Alert, UIUserNotificationType.Badge, UIUserNotificationType.Sound] let notificationSettings = UIUserNotificationSettings(forTypes: notificationTypes, categories: nil) application.registerForRemoteNotifications() application.registerUserNotificationSettings(notificationSettings) return FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions) } func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool { return FBSDKApplicationDelegate.sharedInstance().application( application, openURL: url, sourceApplication: sourceApplication, annotation: annotation) } func applicationDidBecomeActive(application: UIApplication) { // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. FBSDKAppEvents.activateApp() } func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject], fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) { // If you are receiving a notification message while your app is in the background, // this callback will not be fired till the user taps on the notification launching the application. // TODO: Handle data of notification // Print message ID. print("Message ID: \(userInfo["gcm.message_id"]!)") // Print full message. print("%@", userInfo) } 编辑经过更多调试，我的控制台现在打印此错误：
警告：应用程序委托收到对-application的调用：didReceiveRemoteNotification：fetchCompletionHandler：但是从未调用完成处理程序。
根据您上次编辑，您似乎收到了通知。 否则，它不会向您发出永远不会调用完成处理程序的警告。
您可以通过调用完成处理程序继续并删除警告（并使iOS满意）。 例如，
completionHandler(.NoData)
这告诉iOS，没有与您的应用程序需要下载的通知相关联的新数据。