获取线程1:尝试使用点击手势识别器打开url时发出sigabrt信号

我正在尝试使用点击手势识别器在点击图像时打开URL。 代码成功构建,但当我尝试点击图像时,它终止并显示

以NSException(lldb)类型的未捕获异常终止

[Hello.ViewController clickToOpen]:发送到实例的无法识别的选择器。

还有一个

排队

类AppDelegate:UIResponder,UIApplicationDelegate{”,在AppDelegate.swift中。

ViewController代码如下:

//
//  ViewController.swift
//  Hello
//

import UIKit

class ViewController: UIViewController, UITextFieldDelegate {

//MARK: Outlets
@IBOutlet weak var nameTextField: UITextField!
@IBOutlet weak var helloName: UILabel!
@IBOutlet weak var imageToTap: UIImageView!

override func viewDidLoad() {
    super.viewDidLoad()

    nameTextField.delegate = self

    let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: Selector(("clickToOpen")))
    self.imageToTap.addGestureRecognizer(tapGestureRecognizer)
    self.imageToTap.isUserInteractionEnabled = true
}

//MARK: UITextFieldDelegate
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    // Hide the keyboard
    textField.resignFirstResponder()

    return true 
}
func textFieldDidEndEditing(_ textField: UITextField) {
    helloName.text = "Hello \(textField.text!)"
    textField.text = ""
}

//MARK: Actions
@IBAction func clearButton(_ sender: UIButton) {
    helloName.text = "Hello"
}
@IBAction func enterButton(_ sender: UIButton) {
    nameTextField.resignFirstResponder()
}
@IBAction func clickToOpen(_ sender: UITapGestureRecognizer) {
     if let url = NSURL(string: "http://www.google.com/") {
        UIApplication.shared.openURL(url as URL)
    }

}

}