为什么KYDrawerController在Alamofire响应中触发代码时不显示？

Question

登录成功时，我正在使用KYDrawerController在主屏幕上显示侧边菜单。

我使用Alamofire请求用户身份验证，当响应成功时，然后用抽屉打开主屏幕。

问题是主屏幕没有显示或登录屏幕保持静止，但是当从Alamofire响应之外调用代码时，它工作得很好。这是我的代码

Alamofire.request(URL_LOGIN_PHONE, method: .post, parameters: parameters).responseJSON {  response in

        switch response.result {
        case .success(let value):
            let jsonResponse = JSON(value)

            // Check if status = success
            if jsonResponse["status"] == "success" {

        // Init Drawer
        let appDelegate = UIApplication.shared.delegate as! AppDelegate

        let storyBoard = UIStoryboard.init(name: "Main", bundle: Bundle.main)

        let navVC = storyBoard.instantiateViewController(withIdentifier: "NavVC")  // is the main controller for the drawer.
        let drawerVC = storyBoard.instantiateViewController(withIdentifier: "DrawerVC")  // is the drawer, and the drawer needs a main controller

        appDelegate.drawerController.mainViewController = navVC
        appDelegate.drawerController.drawerViewController = drawerVC

        appDelegate.window?.rootViewController = appDelegate.drawerController
        appDelegate.window?.makeKeyAndVisible()

            } else {

            }

        case .failure( _):
        }

    }

Answer 1

您必须将代码放在异步闭包块中，就像这样

DispatchQueue.main.async {
 // Init Drawer
    let appDelegate = UIApplication.shared.delegate as! AppDelegate

    let storyBoard = UIStoryboard.init(name: "Main", bundle: Bundle.main)

    let navVC = storyBoard.instantiateViewController(withIdentifier: "NavVC")  // is the main controller for the drawer.
    let drawerVC = storyBoard.instantiateViewController(withIdentifier: "DrawerVC")  // is the drawer, and the drawer needs a main controller

    appDelegate.drawerController.mainViewController = navVC
    appDelegate.drawerController.drawerViewController = drawerVC

    appDelegate.window?.rootViewController = appDelegate.drawerController
    appDelegate.window?.makeKeyAndVisible()
}

Answer 2

问题与Alamofire或主线程无关，只是代码试图实例化已经加载的抽屉。所以我添加了代码来检查它是否已加载。如果已加载我使用unwindSegue返回主视图控制器。

let appDelegate = UIApplication.shared.delegate as! AppDelegate
        // check if drawer loaded or not.
        if appDelegate.drawerController.isViewLoaded {
            // Drawer loaded prevoiusly, dont load it again
            appDelegate.drawerController.setDrawerState(.closed, animated: true)
            self.exitToRestaurants()
        } else {
            // Drawer not loaded from prevouis use.
            // and it will be loaded for the first time/
            let storyBoard = UIStoryboard.init(name: "Main", bundle: Bundle.main)

            let navVC = storyBoard.instantiateViewController(withIdentifier: "NavVC")  // is the main controller for the drawer.
            let drawerVC = storyBoard.instantiateViewController(withIdentifier: "DrawerVC")  // is the drawer, and the drawer needs a main controller


            appDelegate.drawerController.mainViewController = navVC
            appDelegate.drawerController.drawerViewController = drawerVC

            appDelegate.window?.rootViewController = appDelegate.drawerController
            appDelegate.window?.makeKeyAndVisible()
        }