使用未申報的類型

Question

我不知道爲什麼不能找到這個類。我已經看過類似於此的其他帖子，但是我的委託人的命名慣例不應該干擾迅速。我試過了所有我能想到的東西，但我仍然不知道爲什麼SelectButton無法找到。

有什麼想法？

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

當我從回購拉着我工作，顯然這個目標是永遠不會設置。因此，該文件無法找到。