是否有任何特殊参数的UILocalNotification必须有为了显示在锁屏像Facebook的Messenger消息吗？ 我通知并出现在“通知”的通知中心。 我认为，行为类似于AppStore的通知，在他们仅作为通知，但用户永远不会报警。
Answer 1:
你可能没有添加.Badge当你做你的registerUserNotificationSettings 。 你应该有
let settings = UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: categories)
application.registerUserNotificationSettings(settings)
Answer 2:
你必须采取许可锁定屏幕上显示的通知！ 一旦看看Appdelegate.m代码
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
let notificationCategory = UIMutableUserNotificationCategory()
let categories = Set<UIUserNotificationCategory>(arrayLiteral: notificationCategory)
let settings = UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: categories)
application.registerUserNotificationSettings(settings)
return true
}
文章来源: UILocalNotification not showing in the lock screen
