swift - 如何快速关闭键盘

Question

我想知道如果用户在 UITextField 之外触摸，如何关闭键盘。我正在使用 Xcode 6.1。我根据以下通过 ViewDidLoad() 函数将 UITextField 添加到 UIViewController。非常感谢任何有关关闭键盘的帮助。

    class PickerdemoViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate, UITextFieldDelegate{

var textBox1 : UITextField!

override func viewDidLoad() {

//..................adding text box.........................//

    self.textBox1 = UITextField (frame: CGRectMake(100, 152.5, 50, 35))
    textBox1.delegate = self
    textBox1.backgroundColor = UIColor.whiteColor()
    textBox1.placeholder = "enter"
    textBox1.keyboardType = UIKeyboardType.DecimalPad
    self.textBox1.resignFirstResponder()
    textBox1.keyboardAppearance = UIKeyboardAppearance.Default
    self.view.addSubview(textBox1)



    super.viewDidLoad()

}

Answer 1

您需要引用 UITextField，所以创建一个这样的属性值

class MyClass: UIViewController {
  var textBox1: UITextField!
  ...
  // create your textfield where ever you were by assigning it to self.textBox1
}

然后关闭键盘，您将辞去其作为第一响应者的职务。

self.textBox1.resignFirstResponder()

更新以关闭键盘

返回时关闭/使用 textField 委托(delegate)方法完成

func textFieldShouldReturn(textField: UITextField) -> Bool {
    self.textBox1.resignFirstResponder()
    return true
}

点击按钮时关闭(自定义 IBAction 方法)

@IBAction func buttonClicked(sender: UIButton!) {
    self.textBox1.resignFirstResponder()
}