如何快速安排每日推送通知？

Question

我希望我的应用在每天下午 13 点通知用户。我把它放在我的应用委托中：

    func Notification() {
    var Notification = UILocalNotification()
    Notification.alertAction = "New Question!"
    Notification.alertBody = "Solve the new question!"


    Notification.fireDate = NSDate(timeIntervalSinceNow: 0)

    UIApplication.sharedApplication().scheduleLocalNotification(Notification)
}

这在我的应用程序中 didFinishLaunching:

    application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: UIUserNotificationType.Badge | UIUserNotificationType.Sound, categories: nil))

我必须做些什么才能让我的通知按计划每天触发？

Answer 1

只需将任何过去的日期设置为下午 13 点， 并将repeatInterval设置为.CalendarUnitDay

let startDate = Date()
var component = Calendar.current.dateComponents([.year, .month, .day, .hour], from: Date())
component.hour = 13
let fireDate = Calendar.current.date(from: component)

notification.repeatInterval = .day;
notification.fireDate = fireDate

更新：

let trigger = UNCalendarNotificationTrigger(dateMatching: component, repeats: true)
var triggerDaily = Calendar.current.dateComponents([.hour,.minute,.second], from: Date())
triggerDaily.hour = 13
triggerDaily.minute = 0
triggerDaily.second = 0
let trigger = UNCalendarNotificationTrigger(dateMatching: triggerDaily, repeats: true)

let content = UNMutableNotificationContent()
content.title = "title"
content.body = "body"
content.categoryIdentifier = "todoList"

let request = UNNotificationRequest(identifier: "identifier", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request) {(error) in // to do }