Question

UIButton的子类是否有可能在故事板中触发segue？一旦我在故事板中更改按钮的自定义类，segue就会停止工作。

我将UIPageViewController嵌入在NavigationController内的ViewController中。 PageController中的一个ViewControllers有一个子类Button，它应该在NavigationController中执行一个segue。

Button子类如下：其他所有东西都只在故事板中连接

class MiniButton:UIButton{

var originalBackgroundColor:UIColor?
var originalTextColor:UIColor?

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    originalBackgroundColor = self.backgroundColor
    originalTextColor = self.titleColor(for: .normal)
    self.backgroundColor = MiniColor.miniYellow
    self.setTitleColor(MiniColor.white, for: .normal)
}

func backToOriginalColors(){
    self.backgroundColor = originalBackgroundColor
    self.setTitleColor(originalTextColor, for: .normal)
}

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

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

}

Answer 1

在您的子类'方法上调用超级是'超'重要=（

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

    originalBackgroundColor = self.backgroundColor
    originalTextColor = self.titleColor(for: .normal)
    self.backgroundColor = MiniColor.miniYellow
    self.setTitleColor(MiniColor.white, for: .normal)
}

UIButton的子类可以触发segues吗？

1 个答案: