Ios ViewController作为Swift中MapView的覆盖（如谷歌地图应用程序用户界面）

我正在使用Swift构建一个小应用程序，希望实现以下目标： -带有多个注释的MapView -单击其中一个注释显示覆盖图中的一些详细信息，覆盖图从底部移入并填充大约一半的屏幕 -显示屏的上半部分仍显示地图视图。单击地图即可关闭详细信息

现在我读了很多关于不同可能性的书。首先，我尝试将ContainerView与以下内容结合使用：

@IBOutlet weak var detailsContainerYPosition: NSLayoutConstraint!

func mapView(mapView: MKMapView!, didSelectAnnotationView view: MKAnnotationView!) {
    UIView.animateWithDuration(0.3, delay: 0.0, options: UIViewAnimationOptions.CurveEaseOut, animations: {
        self. detailsContainerYPosition.constant = 0
        self.view.layoutIfNeeded()

        }, completion: nil)
}

let detailsWidth: CGFloat = view.bounds.width
let detailsHeight: CGFloat = 150
let detailsViewFrame: CGRect = CGRectMake(0, view.bounds.height, detailsWidth, detailsHeight)

detailsController = storyboard?.instantiateViewControllerWithIdentifier("details") as! DetailsViewController
detailsController.descriptionText = "I'm a text that was passed from the MainViewController"

self.addChildViewController(detailsController)
detailsController.view.frame = detailsViewFrame
view.addSubview(detailsController.view)
detailsController.didMoveToParentViewController(self)

self.detailsController.removeFromParentViewController()

问题是viewDidLoad（）方法只触发了一次，我想在将一些数据传递给controller类后使用它来构建详细信息页面

接下来，我使用了一个定制的segue，并用它进行了拍摄：

class DetailsSegue: UIStoryboardSegue {
    override func perform() {
        // Assign the source and destination views to local variables.
        var mapView = self.sourceViewController.view as UIView!
        var detailsView = self.destinationViewController.view as UIView!

        // Get the screen width and height.
        let screenWidth = UIScreen.mainScreen().bounds.size.width
        let screenHeight = UIScreen.mainScreen().bounds.size.height

        // Specify the initial position of the destination view.
        detailsView.frame = CGRectMake(0.0, screenHeight, screenWidth, 140)

        // Access the app's key window and insert the destination view above the current (source) one.
        let window = UIApplication.sharedApplication().keyWindow
        window?.insertSubview(detailsView, aboveSubview: mapView)

        // Animate the transition.
        UIView.animateWithDuration(0.4, animations: { () -> Void in
            detailsView.frame = CGRectOffset(detailsView.frame, 0.0, -140)
        }, completion: nil)
    }
}

这似乎是更好的解决方案，因为我可以在prepareforsgue（）函数中向新控制器发送一些数据，并且每次启动此segue时都会触发viewDidLoad（）方法，但现在我正在努力： -每次单击注释并调用segue时，都会插入一个新视图。但如果一个细节视图已经可见，我只想更新这一个 -当从MapView调用注释视图时，我找不到任何方法来展开此序列

---

但也许这里的任何人都有更好的方法来实现这样的UI。

我终于设法通过手动添加ViewController和这样的视图来获得我想要的：

@IBOutlet weak var detailsContainerYPosition: NSLayoutConstraint!

func mapView(mapView: MKMapView!, didSelectAnnotationView view: MKAnnotationView!) {
    UIView.animateWithDuration(0.3, delay: 0.0, options: UIViewAnimationOptions.CurveEaseOut, animations: {
        self. detailsContainerYPosition.constant = 0
        self.view.layoutIfNeeded()

        }, completion: nil)
}

let detailsWidth: CGFloat = view.bounds.width
let detailsHeight: CGFloat = 150
let detailsViewFrame: CGRect = CGRectMake(0, view.bounds.height, detailsWidth, detailsHeight)

detailsController = storyboard?.instantiateViewControllerWithIdentifier("details") as! DetailsViewController
detailsController.descriptionText = "I'm a text that was passed from the MainViewController"

self.addChildViewController(detailsController)
detailsController.view.frame = detailsViewFrame
view.addSubview(detailsController.view)
detailsController.didMoveToParentViewController(self)

self.detailsController.removeFromParentViewController()

在忽略细节时，我移除控制器，如下所示：

@IBOutlet weak var detailsContainerYPosition: NSLayoutConstraint!

func mapView(mapView: MKMapView!, didSelectAnnotationView view: MKAnnotationView!) {
    UIView.animateWithDuration(0.3, delay: 0.0, options: UIViewAnimationOptions.CurveEaseOut, animations: {
        self. detailsContainerYPosition.constant = 0
        self.view.layoutIfNeeded()

        }, completion: nil)
}

let detailsWidth: CGFloat = view.bounds.width
let detailsHeight: CGFloat = 150
let detailsViewFrame: CGRect = CGRectMake(0, view.bounds.height, detailsWidth, detailsHeight)

detailsController = storyboard?.instantiateViewControllerWithIdentifier("details") as! DetailsViewController
detailsController.descriptionText = "I'm a text that was passed from the MainViewController"

self.addChildViewController(detailsController)
detailsController.view.frame = detailsViewFrame
view.addSubview(detailsController.view)
detailsController.didMoveToParentViewController(self)

self.detailsController.removeFromParentViewController()

我创建了一个小示例来演示我的解决方案：

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谢谢，但您的GitHub项目似乎是空的；）哦，对不起。我刚刚更新了项目，因此它现在包含实际代码。请参阅