我正在使用UITextfied,而点击textfied键盘出现,但当我按下返回键,键盘没有消失。我使用了以下代码:
func textFieldShouldReturn(textField: UITextField!) -> Bool // called when 'return' key pressed. return NO to ignore.
{
return true;
}
方法resignfirstresponder没有进入函数。
我正在使用UITextfied,而点击textfied键盘出现,但当我按下返回键,键盘没有消失。我使用了以下代码:
func textFieldShouldReturn(textField: UITextField!) -> Bool // called when 'return' key pressed. return NO to ignore.
{
return true;
}
方法resignfirstresponder没有进入函数。
当前回答
您可以使用以下函数使应用程序解除键盘
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
self.view.endEditing(true)
return false
}
下面是一个完整的例子来更好地说明这一点:
//
// ViewController.swift
//
//
import UIKit
class ViewController: UIViewController, UITextFieldDelegate {
@IBOutlet var myTextField : UITextField
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.myTextField.delegate = self
}
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
self.view.endEditing(true)
return false
}
}
代码来源:http://www.snip2code.com/Snippet/85930/swift-delegate-sample
其他回答
确保你的textField委托被设置为视图控制器,从你正在写你的textField相关的代码。
self.textField.delegate = self
您可以使用以下函数使应用程序解除键盘
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
self.view.endEditing(true)
return false
}
下面是一个完整的例子来更好地说明这一点:
//
// ViewController.swift
//
//
import UIKit
class ViewController: UIViewController, UITextFieldDelegate {
@IBOutlet var myTextField : UITextField
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.myTextField.delegate = self
}
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
self.view.endEditing(true)
return false
}
}
代码来源:http://www.snip2code.com/Snippet/85930/swift-delegate-sample
下面是Swift 3.0版本对peacetype注释的更新:
textField.addTarget(nil, action:Selector(("firstResponderAction:")), for:.editingDidEndOnExit)
我建议从RSC初始化类:
import Foundation
import UIKit
// Don't forget the delegate!
class ViewController: UIViewController, UITextFieldDelegate {
required init(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
@IBOutlet var myTextField : UITextField?
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.myTextField.delegate = self;
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func textFieldShouldReturn(textField: UITextField!) -> Bool {
self.view.endEditing(true);
return false;
}
}
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)
}