ios - 对容器 View 使用分段控件时出现错误代码

Question

预先感谢您的帮助!

我正在尝试使用分段控件来更改我的 View Controller 之一上的容器 View 内的 subview 。我在 SO 上找到了一个很好的答案，下面是以下代码:

@IBAction func segmentedControlChange(sender: AnyObject) {

    var newController = storyboard?.instantiateViewControllerWithIdentifier(viewControllerIdentfiers[sender.selectedIndex]) as! UIViewController
    let oldController = childViewControllers.last as! UIViewController

    oldController.willMoveToParentViewController(nil)
    addChildViewController(newController)
    newController.view.frame = oldController.view.frame

    transitionFromViewController(oldController, toViewController: newController, duration: 0.25, options: UIViewAnimationOptions.TransitionFlipFromRight, animations: {
        () -> Void in
        //nothing needed here
        }, completion: { (finished) -> Void in
            oldController.removeFromParentViewController()
            newController.didMoveToParentViewController(self)

    })
}

当我在模拟器中运行它，然后单击分段控件时，我想到了线程 1:EXC_BAD_INSTRUCTION(code = EXC_l386_INVOP, subcode=0x0)。我也在 View Controller 上使用了 Storyboard标识符。

Answer 1

尝试获取 Storyboard

let storyboard = UIStoryboard(name: "Main", bundle: nil)