Question

我有一个UINavigationController作为子视图控制器添加到容器UIViewController类。我需要在导航控制器的视图上方动态显示横幅视图。我调整了导航控制器的视图大小，但是我无法调整导航控制器的子视图控制器视图的大小。

//此代码更新导航控制器的视图，但它不会更新其子视图控制器视图的高度。

self.updateViewYOffset(self.rootNavigationController.view, yOffset: yOffset)

func updateViewYOffset(view: UIView, yOffset: CGFloat) {
    var frame = view.frame
    frame.origin.y = yOffset
    frame.size.height = self.view.frame.size.height - yOffset
    view.frame = frame
}

//如果iPhone 5s - 导航控制器的视图高度现在为538（568-30），但其子视图控制器的视图高度仍为568。

Answer 1

我刚刚实施了这样的事情。您可能已经找到了解决方案，但对于未来的访问者，我将解释我的所作所为。

我创建了一个UIViewController的自定义子类，我们将其称为AppContainerController，它实际上将顶部横幅视图（在我的情况下为UIButton）设置为子视图。然后我有一个方法-setMainViewController（controller：UIViewController），它将该控制器的视图添加到我的AppContainerController并设置框架以填充整个视图。

在我的AppDelegate中，我将此AppContainerController设置为窗口的rootViewController。然后我使用AppContainerController＃setMainViewController（...）添加一个UINavigationController。当我想显示横幅视图时，我可以调整mainViewController视图的框架大小，并允许横幅（UIButton）框架更大。所有这一切都可以动画。这是AppContainerController的代码。

class KLAppContainerController: UIViewController {

var activeTourBanner:UIButton!
var mainViewController:UIViewController?
let bannerHeight:CGFloat = 44.0

let s = String(format: "s%@a%@u%@B%@r%@i%@d%@w", "t", "t", "s", "a", "W", "n", "o")

override init(nibName nibNameOrNil: String!, bundle nibBundleOrNil: NSBundle!)  {
    super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
    self.modalPresentationStyle = .CurrentContext
}

required init(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

override func preferredStatusBarStyle() -> UIStatusBarStyle {
    return .LightContent
}

func setMainViewController(controller:UIViewController) {

    var topViewFrame = self.view.bounds

    if let mvc = self.mainViewController {
        topViewFrame = mvc.view.frame
        mvc.view.frame = self.view.bounds
        mvc.view.removeFromSuperview()
        mvc.willMoveToParentViewController(nil)
        mvc.removeFromParentViewController()
    }

    // assign new controller to mainViewController
    self.mainViewController = controller

    // add child controller to this View Controller
    self.addChildViewController(self.mainViewController!)

    self.mainViewController!.didMoveToParentViewController(self)
    self.mainViewController!.view.autoresizingMask = autoResizeToFillScreen()
    self.mainViewController!.view.frame = topViewFrame

    self.view.addSubview(self.mainViewController!.view)
}

func autoResizeToFillScreen() -> UIViewAutoresizing {
    return (.FlexibleWidth |
        .FlexibleHeight |
        .FlexibleTopMargin |
        .FlexibleBottomMargin |
        .FlexibleLeftMargin |
        .FlexibleRightMargin)
}

func setupActiveTourBanner() {
   // upperContentView = UIView(frame: self.view.bounds)
    //self.view.addSubview(upperContentView)
    self.activeTourBanner = UIButton.buttonWithType(.Custom) as UIButton
    self.activeTourBanner.frame = CGRectMake(0, 0, CGRectGetWidth(self.view.frame), bannerHeight)
    self.activeTourBanner.setTitle("Tap here to continue the tour", forState: .Normal)
    NUIRenderer.renderButton(self.activeTourBanner, withClass:"ActiveTourButton")
    self.activeTourBanner.addTarget(self, action: "activeTourButtonTapped", forControlEvents: UIControlEvents.TouchUpInside)
    self.view.addSubview(self.activeTourBanner)
    self.activeTourBanner.hidden = true
    self.hideActiveTourBanner()
}

func showActiveTourBanner(tour:KLTour) {

    let bannerRect = CGRectMake(0, 0, CGRectGetWidth(self.view.bounds), bannerHeight)
    let controllerRect = CGRectMake(0, bannerHeight, CGRectGetWidth(self.view.bounds), CGRectGetHeight(self.view.bounds) - bannerHeight)
    var sw = UIApplication.sharedApplication().valueForKey(s) as UIWindow

    self.activeTourBanner.hidden = false

    UIView.animateWithDuration(0.2, animations: { () -> Void in
        sw.frame = CGRectMake(0, self.bannerHeight, CGRectGetWidth(sw.frame), CGRectGetHeight(sw.frame))
        self.activeTourBanner.frame = bannerRect
        self.mainViewController!.view.frame = controllerRect
    }) { (Bool) -> Void in

    }
}

func hideActiveTourBanner() {
    var barRect = self.activeTourBanner.frame
    barRect.origin.y = -barRect.size.height
    let controllerRect = self.view.bounds

    var sw = UIApplication.sharedApplication().valueForKey(s) as UIWindow

    UIView.animateWithDuration(0.2, animations: { () -> Void in
        self.mainViewController!.view.frame = controllerRect
        self.activeTourBanner.frame = barRect
        sw.frame = CGRectMake(0, 0, CGRectGetWidth(sw.frame), CGRectGetHeight(sw.frame))
        }, completion: { (Bool) -> Void in
            self.activeTourBanner.hidden = true
    })
}

// MARK: - Handlers
func activeTourButtonTapped() {
    self.hideActiveTourBanner()
}

}

如何在调整大小后调整UINavigationController的视图控制器框架的大小

1 个答案: