使用未声明的类型

Question

我不知道为什么找不到这个课程。我看过其他与此类似的帖子，但是我的代表的命名惯例不应该干扰swift。我已经尝试了所有我能想到的东西，但我仍然不知道为什么无法找到SelectButton。

有什么想法吗？

   import UIKit
import QuartzCore

protocol SelectButtonDelegate {

    func willSelectButton(button: SelectButton)
}

class SelectButton: UIButton {

    var delegate: SelectButtonDelegate?

    let normalColor = UIColor(white: 0, alpha: 0.2)
    let selectedColor = UIColor(white: 0, alpha: 0.4)
    let recessedColor = UIColor(white: 0, alpha: 0.5)

    init(frame: CGRect, title: String) {
        super.init(frame: frame)

        backgroundColor = normalColor

        setTitle(title, forState: .Normal)
        setTitleColor(UIColor(white: 1, alpha: 0.2), forState: .Normal)
        setTitleColor(UIColor(white: 1, alpha: 0.7), forState: .Selected)

        layer.cornerRadius = 3

        bk_addEventHandler({ (object) -> Void in
            UIView.animateWithDuration(0.1, animations: { () -> Void in
                self.backgroundColor = self.recessedColor
            })
        }, forControlEvents: .TouchDown)

        bk_addEventHandler({ (object) -> Void in
            UIView.animateWithDuration(0.1, animations: { () -> Void in
                self.backgroundColor = self.currentColor()
            })
            }, forControlEvents: .TouchUpOutside)

        bk_addEventHandler({ (object) -> Void in
            UIView.animateWithDuration(0.1, animations: { () -> Void in
                self.switchState()
                self.backgroundColor = self.currentColor()
            })
            }, forControlEvents: .TouchUpInside)
    }

    func currentColor() -> UIColor {
        if selected == true {
            return selectedColor
        }
        return normalColor
    }

    func switchState() {
        if selected == true {
            selected = false
        }
        else {
            if delegate != nil {
                delegate!.willSelectButton(self)
            }
            selected = true
        }
    }

    func deselect() {
        selected = false
        UIView.animateWithDuration(0.1, animations: { () -> Void in
            self.backgroundColor = self.currentColor()
        })
    }

    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

}

Answer 1

当我从我正在处理的回购中撤出时，显然目标从未设定过。因此，找不到该文件。