1

当用户点击等待通知操作时，我正在尝试重新安排通知。当triggerNotification()第一次被调用时Date由日期选择器提供，但是当它被响应调用时，会从时间间隔中获取日期。在我设置 的didReceiveResponse方法内部并将其传递给参数。延迟的通知永远不会到达。我不明白这是函数调用问题还是因为我看到它的打印是正确的。这是代码：case:waitActionIdentifier:newDatetriggerNotificationnewDate

class ViewController: UIViewController {
    @IBAction func datePickerDidSelectNewDate(_ sender: UIDatePicker) {

        let selectedDate = sender.date
        let delegate = UIApplication.shared.delegate as? AppDelegate
//        delegate?.scheduleNotification(at: selectedDate)
        delegate?.triggerNotification(at: selectedDate)
    }
}

和 AppDelegate

import UIKit
import UserNotifications

@UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {
    var window: UIWindow?



    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        UNUserNotificationCenter.current().delegate = self
        configureCategory()
        triggerNotification(at: Date())
        requestAuth()

        return true
    }


     let category = "Notification.Category.Read"

    private let readActionIdentifier = "Read"
    private let waitActionIdentifier = "Wait"

    private func requestAuth() {
        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (success, error) in
            if let error = error {
                print("Request Authorization Failed (\(error), \(error.localizedDescription))")
            }
        }
    }

    func triggerNotification(at date: Date) {
        // Create Notification Content
        let notificationContent = UNMutableNotificationContent()

        //compone a new Date components because components directly from Date don't work
        let calendar = Calendar(identifier: .gregorian)
        let components = calendar.dateComponents(in: .current, from: date)
        let newComponents = DateComponents(calendar: calendar, timeZone: .current, month: components.month, day: components.day, hour: components.hour, minute: components.minute)
        //create the trigger with above new date components, with no repetitions
        let trigger = UNCalendarNotificationTrigger(dateMatching: newComponents, repeats: false)

        // Configure Notification Content
        notificationContent.title = "Hello"
        notificationContent.body = "Kindly read this message."

        // Set Category Identifier
        notificationContent.categoryIdentifier = category

        // Add Trigger
//        let notificationTrigger = UNTimeIntervalNotificationTrigger(timeInterval: 10.0, repeats: false)

//        // Create Notification Request
        let notificationRequest = UNNotificationRequest(identifier: "test_local_notification", content: notificationContent, trigger: trigger)
//
        // Add Request to User Notification Center
        UNUserNotificationCenter.current().add(notificationRequest) { (error) in
            if let error = error {
                print("Unable to Add Notification Request (\(error), \(error.localizedDescription))")
            }
        }
    }

    private func configureCategory() {
        // Define Actions
        let read = UNNotificationAction(identifier: readActionIdentifier, title: "Read", options: [])
        let wait = UNNotificationAction(identifier: waitActionIdentifier, title : "Wait", options: [])
        // Define Category
        let readCategory = UNNotificationCategory(identifier: category, actions: [read, wait], intentIdentifiers: [], options: [])

        // Register Category
        UNUserNotificationCenter.current().setNotificationCategories([readCategory])
    }

    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        completionHandler([.alert])
    }

    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        switch response.actionIdentifier
        {
        case readActionIdentifier:
           print("Read tapped")
        case waitActionIdentifier:
            let actualDate = Date()
            let newDate: Date = Date(timeInterval: 10, since: actualDate)
            self.triggerNotification(at: newDate)
            print("Wait tapped")
            print(actualDate)
            print(newDate)
        default:
            print("Other Action")
        }

        completionHandler()
    }


}
4

1 回答 1

0

在用@VIP-DEV 和@Honey 尝试了不同的事情之后，我终于明白了在点击通知中的等待操作按钮时重新安排通知的问题在哪里。在func triggerNotification(at date: Date)范围内，我得到了没有秒数的日期组件，let newComponents = DateComponents(calendar: calendar, timeZone: .current, month: components.month, day: components.day, hour: components.hour, minute: components.minute)所以当函数的新调用是使用let newDate: Date = Date(timeInterval: 5.0 , since: actualDate)日期进行时，当然这些秒数没有被考虑在内，并且使用的日期已经过去，因此..没有重新安排。 let newComponents = DateComponents(calendar: calendar, timeZone: .current, month: components.month, day: components.day, hour: components.hour, minute: components.minute, second: components.second)是包含秒数的组件的最终日期。

于 2018-09-05T19:55:53.493 回答