Ios 无法调用'；具有可视化格式的约束&x27；具有类型为'；（字符串，选项：nil，度量：nil，视图：Dictionary<；String，UIView！>；）&x27；

我在我的演示项目中编写了以下代码

func createConstraints() -> Void
    {
        //Views to add constraints to
        let views = Dictionary(dictionaryLiteral: ("red",vwRed),("blue",vwBlue),("green",vwGreen))

        //Horizontal constraints
        let horizontalConstraints = NSLayoutConstraint.constraintsWithVisualFormat("H:|[red]|", options: nil, metrics: nil, views: views)
        self.view.addConstraints(horizontalConstraints)

        //Vertical constraints
        let verticalConstraints = NSLayoutConstraint.constraintsWithVisualFormat("V:|[red]|", options: nil, metrics: nil, views: views)
        self.view.addConstraints(verticalConstraints)
    }

其中，vwRed、vwBlue、vwGreen的定义如下所示

    var vwBlue:UIView!
    var vwRed:UIView!
    var vwGreen:UIView!

现在我得到如下错误

我正在使用Xcode 7-beta

另外,， 我还想提到的是，它没有接受和给出错误

//Prep auto layout
vwRed.setTranslatesAutoresizingMaskIntoConstraints(false)
vwBlue.setTranslatesAutoresizingMaskIntoConstraints(false)
vwGreen.setTranslatesAutoresizingMaskIntoConstraints(false)

我换成了

    //Prep auto layout        

    vwRed.translatesAutoresizingMaskIntoConstraints = false
    vwBlue.translatesAutoresizingMaskIntoConstraints = false
    vwGreen.translatesAutoresizingMaskIntoConstraints = false

---

谢谢

我将代码修改为下面的代码，它消除了编译器错误。。这对你有用吗

    func createConstraints() -> Void
    {
        //Views to add constraints to
        let views = Dictionary(dictionaryLiteral: ("red",vwRed),("blue",vwBlue),("green",vwGreen))

        let horizontalConstraints = NSLayoutConstraint.constraintsWithVisualFormat("H:|[red]|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: views)
        self.view.addConstraints(horizontalConstraints)

        //Vertical constraints
        let verticalConstraints = NSLayoutConstraint.constraintsWithVisualFormat("V:|[red]|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: views)
        self.view.addConstraints(verticalConstraints)

    }