问题描述
在我的应用中,用户会设置提醒的日期和时间,即使应用关闭,手机也需要在该特定时间发送本地通知。
能够使用以下方法在特定时间发送通知。但是当应用程序关闭时它不起作用:
public func simpleAddNotification(hour: Int,minute: Int,identifier: String,title: String,body: String) {
// Initialize User Notification Center Object
let center = UNUserNotificationCenter.current()
// The content of the Notification
let content = UNMutableNotificationContent()
content.title = title
content.body = body
content.sound = .default
content.badge = 1
// The selected time to notify the user
var dateComponents = DateComponents()
dateComponents.calendar = Calendar.current
dateComponents.hour = hour
dateComponents.minute = minute
// The time/repeat trigger
let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents,repeats: true)
// Initializing the Notification Request object to add to the Notification Center
let request = UNNotificationRequest(identifier: identifier,content: content,trigger: trigger)
// Adding the notification to the center
center.add(request) { (error) in
if (error) != nil {
print(error!.localizedDescription)
}
}
}
解决方法
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