问题描述
我正在尝试使用以下代码在 WatchOS 上安排本地通知,但手表上没有显示任何内容。
// sending notifications
let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: [.alert,.sound]) { (granted,error) in
// Enable or disable features based on authorization.
print("hello?")
}
let content = UNMutableNotificationContent()
content.title = NSString.localizedUserNotificationString(forKey: "Hello!",arguments: nil)
content.body = NSString.localizedUserNotificationString(forKey: "Hello_message_body",arguments: nil)
content.sound = UNNotificationSound.defaultCritical
content.categoryIdentifier = "REMINDER_CATEGORY"
let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 1,repeats: false)
let id = String(Date().timeIntervalSinceReferenceDate)
let request = UNNotificationRequest(identifier: id,content: content,trigger: trigger)
center.add(request,withCompletionHandler: {(_ error: Error?) -> Void in
if error != nil {
print("Something went wrong: \(String(describing: error))")
} else {
print("notif triggered successfully")
}
})
“notif 触发成功”打印显示在日志中。关于这里可能发生什么的任何想法?谢谢!
解决方法
我想通了!通知有效,但我需要将应用设置为后台才能显示。