IOS的键盘的“开始”按钮的动作(Action of the “Go” button of the

如何绑定键盘iOS中的Go按钮的动作？

Answer 1:

Objective-C的

假设你正在使用的UITextField，你可以使用<UITextFieldDelegate>方法textFieldShouldReturn 。

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder]; // Dismiss the keyboard.
    // Execute any additional code

    return YES;
}

不要忘了您分配把这个代码的文本字段的委托类。

self.someTextField.delegate = self;

或者，如果你愿意使用UIControlEvents，你可以做以下

[someTextField addTarget:self action:@selector(textFieldDidReturn:) forControlEvents:UIControlEventEditingDidEndOnExit];

- (void)textFieldDidReturn:(UITextField *)textField
{
    // Execute additional code
}

见@Wojtek卢特考斯基的回答，看看如何在Interface Builder做到这一点。

迅速

UITextFieldDelegate

class SomeViewController: UIViewController, UITextFieldDelegate {
    let someTextField = UITextField()

    override func viewDidLoad() {
        super.viewDidLoad()

        someTextField.delegate = self
    }

    func textFieldShouldReturn(textField: UITextField) -> Bool {
        textField.resignFirstResponder() // Dismiss the keyboard
        // Execute additional code
        return true
    }
}

UIControlEvents

class SomeViewController: UIViewController {
    let someTextField = UITextField()

    override func viewDidLoad() {
        super.viewDidLoad()

        // Action argument can be Selector("textFieldDidReturn:") or "textFieldDidReturn:"
        someTextField.addTarget(self, action: "textFieldDidReturn:", forControlEvents: .EditingDidEndOnExit)
    }

    func textFieldDidReturn(textField: UITextField!) {
        textField.resignFirstResponder()
        // Execute additional code
    }
}

Answer 2:

您可以连接UITextFiled事件Did End On Exit的Connections Inspector 。据攻后触发Go / Return /不管你选择的Return Key在Attributes Inspector 。