UILocalNotification不显示在locking屏幕上

有没有什么特殊的参数需要UILocalNotification才能显示在Facebook Messenger消息的locking屏幕上？ 我的通知确实出现在通知中心的“通知”下。 我认为这种行为与AppStore通知类似，只是将通知显示在通知中，但用户从未收到警报。

Answer 1

你可能没有添加.Badge时，你做了你的registerUserNotificationSettings 。 你应该有

 let settings = UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: categories) application.registerUserNotificationSettings(settings) 

Answer 2

您必须获得在locking屏幕上显示通知的权限！ 一次看看Appdelegate.m中的代码

 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 }