我尝试使用UNCalendarNotificationTrigger(dateMatching:, repeats:)
重复通知,但是此方法只能在特定时间重复。
我还尝试了UNTimeIntervalNotificationTrigger(timeInterval:, repeats:)
并按时间间隔重复了一次通知,但是此方法无法设置推送通知的开始时间。
而且这两种方法似乎没有地方设置结束推送通知的时间。
我想从一个特殊的时间开始,并定期重复通知。我该怎么办?
最佳答案
不用使用repeats
参数,您可以从开始时间到结束时间调度各个通知。
let notifIDPrefix = "mynotif"
let notifCategory = "com.mydomain.mynotif" // this should have been registered with UNUserNotificationCenter
func scheduleNotifs(from startDate: Date, to endDate: Date, with interval: TimeInterval) {
var curDate = startDate
var count: Int = 0
while curDate.compare(endDate) != .orderedDescending {
scheduleNotif(with: "\(notifIDPrefix)_\(count)", date: curDate)
curDate = curDate.addingTimeInterval(interval)
count += 1
}
}
private func scheduleNotif(with identifier: String, date: Date) {
let content = UNMutableNotificationContent()
content.title = "My Title"
content.body = " "
content.categoryIdentifier = notifCategory
content.sound = UNNotificationSound.default()
let triggerTime = Calendar.current.dateComponents([.year, .day, .hour, .minute, .second], from: date)
let trigger = UNCalendarNotificationTrigger(dateMatching: triggerTime, repeats: false)
let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)
let center = UNUserNotificationCenter.current()
center.add(request) { (error : Error?) in
if let theError = error {
print(theError.localizedDescription)
}
}
}
以下将安排3条通知(从现在开始的1分钟,2分钟和3分钟)。
let startDate = Date().addingTimeInterval(60)
let endDate = startDate.addingTimeInterval(60 * 2)
let interval: TimeInterval = 60
scheduleNotifs(from: startDate, to: endDate, with: interval)
关于ios - 如何设置重复本地通知的开始和结束时间?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/50812544/