通过 UserNotifications 安排的本地通知未在手表上显示

Question

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")
    }
})

“通知已成功触发”打印显示在日志中。关于这里可能发生的事情有什么想法吗？谢谢！

Answer 1

我想通了！通知正在运行，但我需要将应用程序设置为后台才能显示。