为什么我的didRecive和willPresent不能工作(动作按钮什么都不做)？

Question

我想发出一份可起诉的通知。只有当我的应用程序关闭时，它才会出现。当我按下动作按钮什么都没发生

我的通知班

class Notfication : NSObject, UNUserNotificationCenterDelegate {

func request(answer : rope, RopesBas : RopesBase){
    let taskCategory = UNNotificationCategory(identifier:  "task", actions: [UNNotificationAction(identifier: "done", title: "Done")], intentIdentifiers: [])
    UNUserNotificationCenter.current().setNotificationCategories([taskCategory])
    print("0 stage")
    
    let content = UNMutableNotificationContent()
    content.title = answer.name
    content.sound =
    UNNotificationSound.default
    content.categoryIdentifier = "task"
    content.userInfo=["name" : answer.name]
    print("1 stage")
    
    // show this notification five seconds from now
    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
    print("2 stage")
    
    //UNUserNotificationCenter.current().delegate = self
    // choose a random identifier
    let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: trigger)
    print("3 stage")
    
    // add our notification request
    UNUserNotificationCenter.current().add(request){ (error : Error?) in
        if let theError = error {
            print(theError.localizedDescription)
        }
    }
    print("4 stage")
    print(UNUserNotificationCenter.current().delegate)
    print("ok")
}


func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
print("5 stage")
let userInfo = response.notification.request.content.userInfo
let id = "dad"
print("6 stage")
print(response.actionIdentifier)
switch response.actionIdentifier {
case "done":
    base.ropes.removeAll(where: {$0.name == id})
    break
case UNNotificationDefaultActionIdentifier,
UNNotificationDismissActionIdentifier:
    
    break
default :
    break
}
    print(base.ropes.count)
    completionHandler()
}

func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
    print("q")
    completionHandler([.badge,.banner,.sound,.list])
}
}

我在工作表视图中声明这个类

struct Adding: View {
private let publisher = Notfication()

当我按下工作表视图中的按钮时，使用它。

Button(action: {
                RopesDB.ropes.append(rope(name: answer.answer))
                publisher.request(answer: RopesDB.ropes.last!, RopesBas: RopesDB)
                dismiss()
            }, label: {
                HStack{
                    Spacer()
                    Text(answer.answer)
                    Spacer()
                }

我试着把代表

class AppDelegate: NSObject, UIApplicationDelegate{
internal func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
    let center = UNUserNotificationCenter.current()
    let options : UNAuthorizationOptions = [.alert, .badge, .sound]
    center.requestAuthorization(options: options) { granted, error in
        if granted{
            UNUserNotificationCenter.current().delegate = Notfication()
        }
            if let error = error {
                print(error.localizedDescription)
            }
    }
    return true
}
//

}并在课堂上评论我的错误？伊德斯威夫特游乐场(iPad 9，iOS 15.5)

Answer 1

我发现这个东西不能在操场上工作，我想

Answer 2

苹果在其文档中指出，只有在应用程序处于后台时才会显示通知。当应用程序已经处于前台时，通知将直接传递到应用程序：https://developer.apple.com/documentation/usernotifications/handling_notifications_and_notification-related_actions中。

您需要在委托的userNotificationCenter(_:willPresent:withCompletionHandler:)方法中接收通知，在那里您的应用程序可以决定实际如何处理它。将用户抛到某个视图，显示一个模态等。