无法调用非函数类型'CGFloat'的值 - Xcode -

Question

我正在尝试制作一个按钮，按下该按钮即可启动游戏。在它显示let pointOfTouch = touch.location(self)的地方，我收到错误消息“无法调用非函数类型的值'CGFloat。'”对此有another post，但我没有从中找到太多用处。这是我的代码：

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {

    for touch: AnyObject in touches {

        let pointOfTouch = touch.location(self)
        let nodeITapped = atPoint(pointOfTouch)

        if nodeITapped.name == "startGame" {
            startGame()
        }
    }
}

Answer 1

你可以尝试

let pointOfTouch = touch.location(in: self)