Question

我已经创建了一个按钮，我想知道如何以编程方式为UIButton编码一个将我带到另一个视图控制器的动作？

这是我到目前为止所拥有的：

let getStartedButton: UIButton = {
    let getStartedButton =  UIButton()
    getStartedButton.backgroundColor = UIColor(red:0.24, green:0.51, blue:0.59, alpha:1.0)
    getStartedButton.setTitle("Get Started", for: .normal)
    getStartedButton.titleLabel?.font = UIFont(name: "Helvetica Bold", size: 18)
    getStartedButton.translatesAutoresizingMaskIntoConstraints = false
    getStartedButton.addTarget(self, action: #selector(buttonAction), for: .touchUpInside)

    return getStartedButton
}()

@objc func buttonAction(sender: UIButton!) {
    print("...")
}

Answer 1

如果要在按下按钮后过渡到另一个ViewController，可以用以下两种方法做到这一点：

1）present(_:animated:completion:)

@objc func buttonAction(sender: UIButton!) {
    let vc = self.storyboard?.instantiateViewController(withIdentifier: "Main") as! SecondViewController
    self.present(vc, animated: true, completion: nil)
}

2）pushViewController(_:animated:)

@objc func buttonAction(sender: UIButton!) {
    let vc = self.storyboard?.instantiateViewController(withIdentifier: "Main") as! SecondViewController
    self.navigationController?.pushViewController(vc, animated: true)
}

Answer 2

可以通过3种方式显示新的View Controller：

呈现视图控制器：

@objc func buttonAction(sender: UIButton!) {
    let destinationVC = self.storyboard?.instantiateViewController(withIdentifier: "DestinationViewController") as! DestinationViewController
    self.present(destinationVC, animated: true, completion: nil)
}

从情节提要中执行Segue：

如果您已经具有要在情节提要中显示的View Controller，并且它具有从源VC到目标VC的序列，则可以在序列中添加一个标识符并执行此操作...

    @objc func buttonAction(sender: UIButton!) {
         self.performSegue(withIdentifier: "MySegueIdentifier", sender: self)
    }

将View Controller推入堆栈（仅当您的原始VC嵌入在Navigation Controller中时才有效）：

@objc func buttonAction(sender: UIButton!) {
    let destinationVC = self.storyboard?.instantiateViewController(withIdentifier: "DestinationViewController") as! DestinationViewController
    self.navigationController?.pushViewController(destinationVC, animated: true)
}

如何以编程方式添加uibutton动作？

2 个答案: