我可以在终止后生成本地通知，但是我无法在UNUserNotificationCenterDelegate的didReceive方法中设置值。
以下是我在AppDelegate中的代码：
class AppDelegate: UIResponder, UIApplicationDelegate{
var window: UIWindow?
let preferences = UserDefaults.standard
let keyForTappingNotification = "notification_tapped"
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
//Requesting Authorization for User Interactions
let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: [.alert, .sound]) { (granted, error) in
}
return true
}
}
以下是我在ViewController中的代码：
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) {
preferences.set("yes", forKey: self.keyForTappingNotification)
preferences.synchronize()
completionHandler()
}
ViewdidLoad如下：
override func viewDidLoad() {
super.viewDidLoad()
if let notification_tapped = self.preferences.string(forKey: self.keyForTappingNotification) {
if notification_tapped.lowercased() == "yes"{
//call to specific function which never gets called as values don't match
}
}
}
委托方法仅在app处于前台或后台时才会收到响应，但在终止后才会收到响应。
有没有办法在应用终止后收到回复？