Question

当用户点击等待通知操作时，我正在尝试重新安排通知。当日期选取器第一次提供triggerNotification()时，日期选择器会提供Date，但响应时会从时间间隔中获取日期。在didReceiveResponse方法case:waitActionIdentifier:中，我设置了newDate并将其传递给triggerNotification参数。延迟的通知永远不会到达。我不知道这是否是一个函数调用问题，或者因为我看到newDate的印刷是正确的。这是代码：

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()
    }


}

Answer 1

在尝试使用@ VIP-DEV和@Honey进行其他操作后，我终于了解了从通知中点击等待操作按钮时重新安排通知的问题所在。在func triggerNotification(at date: Date)范围内，我得到的日期分量没有秒数let newComponents = DateComponents(calendar: calendar, timeZone: .current, month: components.month, day: components.day, hour: components.hour, minute: components.minute)，因此，当使用let newDate: Date = Date(timeInterval: 5.0 , since: actualDate)日期进行函数的新调用时，当然不会考虑这些秒数并且使用的日期已经过，因此。 let newComponents = DateComponents(calendar: calendar, timeZone: .current, month: components.month, day: components.day, hour: components.hour, minute: components.minute, second: components.second)是最后的日期，包括秒在内。

重新安排通知操作的通知无法正常工作

1 个答案: