我有一个 UIViewController，里面有一个 UITextField，当我点击离开或关闭 View 时，我试图关闭键盘。然而，当我调用 resignFirstResponder() 时，键盘仍然没有关闭，我不太清楚为什么。这是我的代码:
class MessageViewController: UIViewController, UITextFieldDelegate {
var messageTextField : UITextField = UITextField()
override func viewDidLoad() {
...
messageTextField.frame = CGRectMake(10, UIScreen.mainScreen().bounds.size.height-50, UIScreen.mainScreen().bounds.size.width-80, 40)
messageTextField.delegate = self
messageTextField.borderStyle = UITextBorderStyle.Line
messageTextField.becomeFirstResponder()
self.view.addSubview(messageTextField)
NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillShow:", name: UIKeyboardWillShowNotification, object: nil)
NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillHide:", name: UIKeyboardWillHideNotification, object: nil)
...
}
func textFieldShouldReturn(textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
self.view.endEditing(true)
println("Touched")
}
func keyboardWillShow(notification: NSNotification) {
var keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey]as? NSValue)?.CGRectValue()
let messageFrame = messageTextField.frame
let newY = messageFrame.origin.y - keyboardSize!.height
messageTextField.frame = CGRectMake(messageFrame.origin.x, newY, messageFrame.size.width, messageFrame.size.height)
}
func keyboardWillHide(notification: NSNotification) {
var keyboardSize = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey]as? NSValue)?.CGRectValue()
let messageFrame = messageTextField.frame
let newY = messageFrame.origin.y - keyboardSize!.height
messageTextField.frame = CGRectMake(messageFrame.origin.x, newY, messageFrame.size.width, messageFrame.size.height)
}
}
有谁知道为什么键盘没有消失？我以编程方式将 UITextField 添加到 View 中，而不是使用 Storyboard。这有什么不同吗？
最佳答案
class ViewController: UIViewController,UITextFieldDelegate {
确认协议(protocol)
messageTextField.delegate=self
设置委托(delegate)
func textFieldShouldReturn(textField: UITextField!) -> Bool
{
messageTextField.resignFirstResponder()
return true;
}
使用此代码..
关于ios - UITextField 键盘不解除，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29936137/