AppDelegate 方法仅在应用程序已打开时从通知中调用
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【中文标题】AppDelegate 方法仅在应用程序已打开时从通知中调用【英文标题】：AppDelegate method is only called from a notification when the app is already open 【发布时间】：2020-10-09 19:26:25 【问题描述】：我正在尝试让推送通知在按下时将用户带到特定的视图控制器。
我目前在我的AppDelegate 中有这个：
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) granted, error in
if let error = error
print(error.localizedDescription)
else
application.registerForRemoteNotifications()
UNUserNotificationCenter.current().delegate = self
return true
当我按下通知并从后台打开应用程序时，这些都不会被调用：
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)
completionHandler([.alert, .sound, .badge])
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void)
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void)
【问题讨论】：
【参考方案1】：如果您的应用没有在后台运行，您将像这样处理didFinishLaunchingWithOptions 中的通知
let notificationInfo = launchOptions?[UIApplication.LaunchOptionsKey.remoteNotification] as? [String : Any]
如果您的应用在后台/前台运行，您将处理通知点击
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void)
【讨论】：
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