func registerAPNs()

in mpush_ios_swift_demo/mpush_ios_swift_demo/AppDelegate.swift [38:67]

• 22 lines of code
• 4 McCabe index (conditional complexity)

    func registerAPNs(_ application: UIApplication) {
        if #available(iOS 10, *) {
            // iOS 10+
            let center = UNUserNotificationCenter.current()
            // 创建category，并注册到通知中心
            createCustomNotificationCategory()
            center.delegate = self
            // 请求推送权限
            center.requestAuthorization(options: [.alert, .badge, .sound], completionHandler: { (granted, error) in
                if (granted) {
                    // User authored notification
                    print("User authored notification.")
                    // 向APNs注册，获取deviceToken
                    DispatchQueue.main.async {
                        application.registerForRemoteNotifications()
                    }
                } else {
                    // User denied notification
                    print("User denied notification.")
                }
            })
        } else if #available(iOS 8, *) {
            // iOS 8+
            application.registerUserNotificationSettings(UIUserNotificationSettings.init(types: [.alert, .badge, .sound], categories: nil))
            application.registerForRemoteNotifications()
        } else {
            // < iOS 8
            application.registerForRemoteNotifications(matching: [.alert,.badge,.sound])
        }
    }