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extension UIViewController {
    func hideKeyboardWhenTappedAround() {
        let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(UIViewController.dismissKeyboard))
        tap.cancelsTouchesInView = false
        view.addGestureRecognizer(tap)
    @objc func dismissKeyboard() {
        view.endEditing(true)
        UIView.animate(withDuration: 0.3, animations: {
            self.view.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)
}

override func viewDidLoad() 
        super.viewDidLoad()
        //TODO
        self.hideKeyboardWhenTappedAround()
}

@IBAction func LoginBtnClick(_ sender: Any) 
        print("loginBtn")
        //...
}

import UIKit
extension UIViewController {
    func hideKeyboardWhenTappedAround() {
        let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(UIViewController.dismissKeyboard))
        tap.cancelsTouchesInView = false
        view.addGestureRecognizer(tap)
    @objc func dismissKeyboard() {
        view.endEditing(true)
        UIView.animate(withDuration: 0.3, animations: {
            self.view.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)
class ViewController: UIViewController {
    fileprivate let textField = UITextField(frame: CGRect(x: 0, y: 0, width: 400, height: 50))
    fileprivate let button = UIButton(frame: CGRect(x: 20, y: 200, width: 150, height: 50))
    override func loadView() {
        super.loadView()
        view.addSubview(textField)
        textField.backgroundColor = .lightGray
        view.addSubview(button)
        button.setTitle("Press me", for: .normal)
        button.setTitleColor(UIColor.blue, for: .normal)
        button.addTarget(self, action: #selector(a), for: .touchUpInside)
        hideKeyboardWhenTappedAround()

如果我在UIButton中添加UITapGestureRecognizer，则单击事件无效 内容来源于 Stack Overflow，遵循 CC BY-SA 4.0 许可协议进行翻译与使用。IT领域专用引擎提供翻译支持 腾讯云小微IT领域专用引擎提供翻译支持

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