override func viewDidLoad() {
    super.viewDidLoad()

    let tap = UITapGestureRecognizer(target: self, action: #selector(handleScreenTap(sender:)))
    self.view.addGestureRecognizer(tap)}

然后用这个函数

func handleScreenTap(sender: UITapGestureRecognizer) {
    self.view.endEditing(true)
}

Add UITextFieldDelegate to the class declaration: class ViewController: UIViewController, UITextFieldDelegate Connect the textfield or write it programmatically @IBOutlet weak var userText: UITextField! set your view controller as the text fields delegate in view did load: override func viewDidLoad() { super.viewDidLoad() self.userText.delegate = self } Add the following function func textFieldShouldReturn(userText: UITextField!) -> Bool { userText.resignFirstResponder() return true; } with all this your keyboard will begin to dismiss by touching outside the textfield aswell as by pressing return key.

另一种主要使用故事板并轻松允许你拥有多个文本字段的方法是:

@IBAction func resignKeyboard(sender: AnyObject) {
    sender.resignFirstResponder()
}

将视图控制器的所有文本字段连接到每个字段的Did End on Exit事件上的那个动作。

斯威夫特3

将下面的代码添加到你的VC中

//hide keyboard when user tapps on return key on the keyboard
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    self.view.endEditing(true);
    return false;
}

对我有用

在你正在使用的视图控制器中:

//suppose you are using the textfield label as this

@IBOutlet weak var emailLabel: UITextField!
@IBOutlet weak var passwordLabel: UITextField!

//then your viewdidload should have the code like this
override func viewDidLoad() {
        super.viewDidLoad()

        self.emailLabel.delegate = self
        self.passwordLabel.delegate = self

    }

//then you should implement the func named textFieldShouldReturn
 func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        textField.resignFirstResponder()
        return true
    }

// -- then, further if you want to close the keyboard when pressed somewhere else on the screen you can implement the following method too:

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        self.view.endEditing(true);
    }

它的返回true部分只告诉文本字段是否允许返回。 你必须手动告诉文本字段解散键盘(或者它的第一个响应器是什么)，这是通过resignFirstResponder()来完成的，如下所示:

// Called on 'Return' pressed. Return false to ignore.

func textFieldShouldReturn(_ textField: UITextField) -> Bool { 
    textField.resignFirstResponder()
    return true
}