Check user settings for push notification in Swift

Question

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.

I do it this

Answer 1

Here is the most thorough way, as of iOS12 and Swift 5:

 _ = UNUserNotificationCenter.current().getNotificationSettings { (settings) in
        switch settings.authorizationStatus {
        case .notDetermined:
            <#code#>
        case .denied:
            <#code#>
        case .authorized:
            <#code#>
        case .provisional:
            <#code#>
        @unknown default:
            <#fatalError()#>
        }
    }