swift中UISwitch的使用

UISwitch的使用

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.setupSwitch()
    }
    
    func setupSwitch() {
        // 创建switch
        let switch_ = UISwitch()
        switch_.center = CGPoint(x: 100, y: 100)
        // 设置默认值
        switch_.isOn = true
        // 添加事件
        switch_.addTarget(self, action: #selector(switchChange), for: .valueChanged)
        
        self.view.addSubview(switch_)
    }
    func switchChange() {
        print("哈哈")
    }
}