Selector in swift3

Question

Why doesn\'t this work in swift 3 ? It crashes at runtime saying:

\'-[my_app_name.displayOtherAppsCtrl tap:]: unrecognized selector sent to instanc

Answer 1

Swift 3:

class MYPTempController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let btn = UIButton(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
        view.addSubview(btn)
        btn.addTarget(self, action: #selector(MYPTempController.btnClick), for: .touchUpInside)
    }
    @objc fileprivate func btnClick() {
        print("--click--")
    }
}

---

//带参数
btn.addTarget(self, action: #selector(MYPTempController.btnClick(_:)), for: .touchUpInside)
//监听方法
func btnClick(_ sender: UIButton) {
    print("--click--")
}