Question

使用swift 3运行xcode 8

以下是我的ViewController文件

class ViewController: UIViewController {

    @IBOutlet weak var testWebview: UIWebView!


    override func viewDidLoad() {
        print("inside viewDidLoad ")
        super.viewDidLoad()

        guard let appDelegate = UIApplication.shared.delegate as? AppDelegate else {
            return
        }
        guard let deviceTokenString = appDelegate.deviceTokenString else {
            print("can not get device token string")
            return
        }


        let deviceid = UIDevice.current.identifierForVendor!.uuidString
        print("====== device id =======")
        print(deviceid)

        let testURL = URL(string: "http://www.test.com/user?device=ios&deviceid=" + deviceid + "&devicetoken=" + deviceTokenString)


        let testURLRequest = URLRequest(url: testURL!)
        print("before load request")
        print(testURL!)
        RJWebview.loadRequest(testURLRequest)
    }

}

以下是我的AppDelegate文件

class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    var deviceTokenString: String?



    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

        let center = UNUserNotificationCenter.current()

        center.requestAuthorization(options: [.alert, .sound, .badge], completionHandler: { granted, error in
            if granted {
                print("YES。")
            }
            else {
                print("NO!")
            }
        })

        application.registerForRemoteNotifications()

        return true
    }


    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        deviceTokenString = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
        print("==== didRegisterForRemoteNotificationsWithDeviceToken ====")
        print("===== deviceTokenString =====")
        print(deviceTokenString!)
    }

}

以下是我的调试区消息

YES。
inside viewDidLoad 
can not get device token string
==== didRegisterForRemoteNotificationsWithDeviceToken ====
===== deviceTokenString =====
DF9AB59resrF68532C07ECB00627E4632F08F02975D5C4adsfsd2e810A5EB4

好像我无法从AppDelegate.swift获取设备令牌字符串。我怎么能得到它？

或者我可以在didFinishLaunchingWithOptions中获取设备令牌吗？

Answer 1

viewDidLoad在viewController的 AppDelegate后始终执行，这就是字符串为空的原因。

解决您可以做的时间问题

在weak var viewController : ViewController?声明弱属性。

ViewController

在viewDidLoad＆gt; guard设置属性。您不需要AppDelegate override func viewDidLoad() { print("inside viewDidLoad ") super.viewDidLoad() let appDelegate = UIApplication.shared.delegate as! AppDelegate appDelegate.viewController = self }。如果它不在那里，应用程序将无法启动。

ViewController

在func loadRequest(for deviceTokenString : String) { let deviceid = UIDevice.current.identifierForVendor!.uuidString print("====== device id =======") print(deviceid) let testURL = URL(string: "http://www.test.com/user?device=ios&deviceid=" + deviceid + "&devicetoken=" + deviceTokenString let testURLRequest = URLRequest(url: testURL!) print("before load request") print(testURL!) RJWebview.loadRequest(testURLRequest) }中，加载Web请求的代码是一种额外的方法。

AppDelegate

在didRegisterForRemoteNotificationsWithDeviceToken＆gt; viewController?.loadRequest(for: deviceTokenString!)调用该方法。

{{1}}

如何将设备令牌从AppDelegate.swift传递到ViewController.swift？

1 个答案: