推送通知未确定

Question

在ios 10中有UNUserNotificationCenter类和方法getNotificationSettingsWithCompletionHandler它给你UNNotificationSettings对象，你可以检查用户是否曾被要求过推送通知permissions.Is有办法实现这一点的iOS 9和iOS 8 。

Answer 1

没有办法。该功能从ios 10开始可用。

Answer 2

您可以使用这样的事情：

let notificationType = UIApplication.sharedApplication().currentUserNotificationSettings()!.types 

if notificationType == UIUserNotificationType.None { 
    // Push notifications are disabled in setting by user. 
} else { 
// Push notifications are enabled in setting by user. 
} 

if notificationType != UIUserNotificationType.None { 
    // Push notifications are enabled in setting by user. 
} 

if notificationType == UIUserNotificationType.Badge { 
    // the application may badge its icon upon a notification being received 
} 

if notificationType == UIUserNotificationType.Sound { 
    // the application may play a sound upon a notification being received 
} 

if notificationType == UIUserNotificationType.Alert { 
    // the application may display an alert upon a notification being received 
}