5 Playground

//ViewController1.swiftimportFoundationimportUIKitpublicclassViewController1: UIViewController {
publicoverridefuncviewDidLoad() {
super.viewDidLoad()
letbutton=UIButtion(type: .custom)
button.frame=CGRect(x:0,y:200,width:300,height:50)
button.setTitle("点击跳转",for: .normal)
button.setTitleColor(.white, for: .normal)
button.backgroundColor= .bluebutton.addTarget(self, action: #selector(onButtonClick),for: .touchUpInside)
view.addSubview(button)
    }
@objcfunconButtonClick() {
navigationController?.pushViewController(ViewController2(), animated: true)
    }
}

//ViewController2.swiftimportFoundationimportUIKitpublicclassViewController2:UIViewController {
publicoverridefuncviewDidLoad() {
super.viewDidLoad()
letlabel: UIlabel=UILabel()
label.frame=CGRect(x:0,y:200,width:300,height:50)
label.text="页面2"label.textColor= .whitelabel.backgroundColor= .redview.addSubview(label)
    }
}