Swift 获取view所在的ViewController

Posted 2020-11-09 小炮陈

 

 

//uiview的扩展

extension UIView{

    func getFirstViewController()->UIViewController?{

        for view in sequence(first: self.superview, next: {$0?.superview}){

            if let responder = view?.next{

                if responder.isKind(of: UIViewController.self){

                    return responder as? UIViewController

                }

            }

        }

        return nil

       

    }

}

 

 

 

 　　　

    override func viewDidLoad() {

        super.viewDidLoad()

        //调用

        let mView = UIView(frame: CGRect(origin: CGPoint.zero, size:CGSize(width: 100, height: 100)))

        mView.backgroundColor = UIColor.red

        self.view.addSubview(mView)

        

        //获取mView的ViewController

        let vc = mView.getFirstViewController()

    }