ios - UIViewController 容器不显示 ChildViewController

Question

我尝试实现左侧面板，但是当我实现时，它似乎除了容器之外不会显示任何内容。

下面是我的代码:

override func viewDidLoad() {
    super.viewDidLoad()
    initCenter(screen: showVC)
}

func initCenter(screen: ShowWhichVC) {
    var presetingController: UIViewController
    showVC = screen

    if dashboardVC == nil {
        dashboardVC = UIStoryboard.dashboardController()
        dashboardVC.delegate = self
    }
    presetingController = dashboardVC
    if let con = centerController {
        con.view.removeFromSuperview()
        con.removeFromParentViewController()
    }
    centerController = presetingController
    view.addSubview(centerController.view)
    self.addChildViewController(centerController)
    centerController.didMove(toParentViewController: self)
}



private extension UIStoryboard {

    class func mainStoryboard() -> UIStoryboard {
        return UIStoryboard(name: "Main", bundle: Bundle.main)
    }

    class func leftPanelController() -> LeftPanelController? {
        return mainStoryboard().instantiateViewController(withIdentifier: "LeftPanelController") as? LeftPanelController
    }

    class func dashboardController() -> DashboardController? {
        return mainStoryboard().instantiateViewController(withIdentifier: "DashboardController") as? DashboardController
    }
}

注意:DashboardController 和 LeftPanelController UI 是以编程方式编写的，这有什么关系吗？谢谢!

Update GMS


2018-06-24 02:05:46.791965+0800 Pegasus[32657:577667] Google Maps SDK for iOS 和 Google Places API for iOS 版本:2.7.30514.0
2018-06-24 02:05:46.808461+0800 Pegasus[32657:577704] TIC 读取状态 [2:0x0]: 1:57
2018-06-24 02:05:46.808596+0800 Pegasus[32657:577704] TIC 读取状态 [2:0x0]: 1:57

我认为现在它与 GMSMapview 有关

Answer 1

我找到了解决办法!经过彻底检查，我发现 centerController View 大小设置为 0，所以我所做的是为其添加一个绑定(bind)到屏幕的大小尺寸。

centerController.view.frame = CGRect(x: 0, y: 0, width: self.view.bounds.width, height: self.view.bounds.height)