检查Swift中推送通知的用户设置 [英] Check user settings for push notification in Swift

问题描述

我在我的应用中有推送通知。每当应用程序启动时，我都想检查用户是否为我的应用程序启用了推送通知。

I have push notifications in my app. Whenever the app is launched, I would like to check whether the user has enabled push notification for my application.

我这样做：

let notificationType = UIApplication.sharedApplication().currentUserNotificationSettings()!.types
if notificationType == UIUserNotificationType.None {
    print("OFF")
} else {
    print("ON")
}

如果用户禁用推送通知，有没有办法从我的应用程序？

If push notifications are disabled by the user, is there any way to activate this from my app?

或者有没有其他选择将用户发送到推送通知设置（设置 - 通知 - AppName）？

Or is there any alternative to send user to the push notification settings (Settings - Notifications - AppName)?

推荐答案

无法从应用程序更改设置。但您可以使用此代码将用户引导至应用程序特定的系统设置。

There is no way to change settings from the app. But you can lead user to application specific system settings using this code.

extension UIApplication {
    class func openAppSettings() {
        UIApplication.sharedApplication().openURL(NSURL(string: UIApplicationOpenSettingsURLString)!)
    }
}

更新为Swift 3.0

Updated for Swift 3.0

extension UIApplication {
    class func openAppSettings() {
        UIApplication.shared.openURL(URL(string: UIApplicationOpenSettingsURLString)!)
    }
}

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