ios - CGRect 调用中的 Swift 额外参数 "width"

Question

我正在尝试在代码中添加一些按钮我得到一个错误“调用中的额外参数‘width’”

        let yPos = txt.frame.origin.y + txt.frame.height


    for i in 0..<count {
        let yt : Int = i*40 + yPos
        //let b = UIButton(frame: CGRect(x: xPos, y: 40, width: 100, height: 30))
        var b = UIButton(frame: CGRect(x: xPos, y: yt, width: 100, height: 30))
        b.addGestureRecognizer(UITapGestureRecognizer(target: self, action: "test:"))
        b.backgroundColor = UIColor.blackColor()
        b.tag = i
        self.addSubview(b)
    }

我不知道是什么问题。我试图将所有参数都转换为 Int 但我得到了同样的错误。有什么建议么？

Answer 1

我的错误是我不得不将所有参数都转换到 CGFloat

       for i in 0...2 {
        let yt : CGFloat = CGFloat(i*40) + yPos
        //let b = UIButton(frame: CGRect(x: xPos, y: 40, width: 100, height: 30))
        var b = UIButton(frame: CGRect(x: xPos, y: yt, width: 100, height: 30))
        b.addGestureRecognizer(UITapGestureRecognizer(target: self, action: "test:"))
        b.backgroundColor = UIColor.blackColor()
        b.tag = i
        self.addSubview(b)
    }