Question

我收到以下错误：在调用中缺少参数＃1的参数。我正在尝试将currentConfiguration[0]函数中panGesture的值存储到currentColor函数中的变量getRandomColor。有任何想法吗？我相信解决方案可能很简单，但我对Swift功能并不太熟悉。

func getRandomColor() -> UIColor {
    let colors = [UIColor.redColor(),
                  UIColor.blueColor(),
                  UIColor.greenColor(),
                  UIColor.yellowColor(),
                  UIColor.purpleColor(),
                  UIColor.magentaColor()]

    // Generate a random index
    let randomIndex = Int(arc4random_uniform(UInt32(colors.count)))
    // Get a random item
    let randomColor = colors[randomIndex]

    var currentColor = panGesture()
    return randomColor
}

func panGesture(sender: UIPanGestureRecognizer) -> (UIColor?) {

    let translation = sender.translationInView(sender.view!)

    let face1 = UIColor.redColor()
    let face2 = UIColor.blueColor()
    let face3 = UIColor.greenColor()
    let face4 = UIColor.yellowColor()
    let face5 = UIColor.purpleColor()
    let face6 = UIColor.magentaColor()

    let viewColor = sceneSetup()

    //Initialize array to store current cube configuration i.e. face location
    var currentConfiguration = [face1,face2,face3,face4,face5,face6]
    var updatedConfiguration = [face1,face2,face3,face4,face5,face6]

    return currentConfiguration[0]
}

Answer 1

panGesture()根据其定义获取参数。您的电话var currentColor = panGesture()不提供电话。

另请注意，panGesture()会返回UIColor?，您必须在从getRandomColor()返回之前解包。

如何从另一个函数中检索UIColor类型的颜色？

1 个答案: