相关疑难解决方法(0)

我决定用Swift语言继续我的剩余项目.当我在storyboard viewcontroller中添加自定义类(.swift类,哪个子类到UIViewcontroller)并加载项目时,应用程序突然崩溃并出现以下错误:

致命错误:在课堂上使用未实现的初始化程序'init(coder :)'

这是一个代码:

import UIKit

class TestViewController: UIViewController {

    init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {
        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
        // Custom initialization
    }

    override func viewDidLoad() {
        super.viewDidLoad()
              // Do any additional setup after loading the view.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    /*
    // #pragma mark - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation …

所以我今天更新到Xcode 6 beta 5,并注意到我几乎所有Apple类的子类都收到了错误.

错误说明:

类'x'不实现其超类的必需成员

这是我选择的一个例子,因为这个类目前非常轻量级,因此很容易发布.

class InfoBar: SKSpriteNode  { //Error message here

    let team: Team
    let healthBar: SKSpriteNode

    init(team: Team, size: CGSize) {
        self.team = team
        if self.team == Team.TeamGood {
            healthBar = SKSpriteNode(color: UIColor.greenColor(), size:size)
        }
        else {
            healthBar = SKSpriteNode(color: UIColor.redColor(), size:size)
        }
        super.init(texture:nil, color: UIColor.darkGrayColor(), size: size)

        self.addChild(healthBar)

    }

}

所以我的问题是,为什么我收到此错误,我该如何解决？我没有实施什么？我正在打电话给指定的初始化程序.