我一直在到处找这个,但我似乎找不到。我知道如何解雇使用Objective-C键盘,但我不知道如何使用Swift?有人知道吗?
当前回答
对于Swift3
在viewDidLoad中注册一个事件识别器
let tap = UITapGestureRecognizer(target: self, action: #selector(hideKeyBoard))
然后我们需要在相同的viewDidLoad中添加手势到视图中。
self.view.addGestureRecognizer(tap)
然后我们需要初始化注册的方法
func hideKeyBoard(sender: UITapGestureRecognizer? = nil){
view.endEditing(true)
}
其他回答
作为一个新手程序员,当人们给出更熟练和不必要的回答时,可能会感到困惑……你不需要做上面所示的任何复杂的事情!
这是最简单的选择……在这种情况下,你的键盘出现在响应文本字段-在你的触摸屏函数中,只需添加resignFirstResponder函数。如下所示-键盘将关闭,因为First Responder被释放(退出Responder链)…
override func touchesBegan(_: Set<UITouch>, with: UIEvent?){
MyTextField.resignFirstResponder()
}
你可以使用swift
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
super.touchesBegan(touches, with: event)
view.endEditing(true)
}
//Simple exercise to demonstrate, assuming the view controller has a //Textfield, Button and a Label. And that the label should display the //userinputs when button clicked. And if you want the keyboard to disappear //when clicken anywhere on the screen + upon clicking Return key in the //keyboard. Dont forget to add "UITextFieldDelegate" and
//"self.userInput.delegate = self" as below
import UIKit
class ViewController: UIViewController,UITextFieldDelegate {
@IBOutlet weak var userInput: UITextField!
@IBAction func transferBtn(sender: AnyObject) {
display.text = userInput.text
}
@IBOutlet weak var display: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
//This is important for the textFieldShouldReturn function, conforming to textfieldDelegate and setting it to self
self.userInput.delegate = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//This is for the keyboard to GO AWAYY !! when user clicks anywhere on the view
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
self.view.endEditing(true)
}
//This is for the keyboard to GO AWAYY !! when user clicks "Return" key on the keyboard
func textFieldShouldReturn(textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
}
可以通过在AppDelegate的窗口属性中添加全局点击手势识别器来实现这一点。
这是一种非常全面的方法,对某些人来说可能不是理想的解决方案,但对我来说很有效。请让我知道这个解决方案是否有任何陷阱。
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Globally dismiss the keyboard when the "background" is tapped.
window?.addGestureRecognizer(
UITapGestureRecognizer(
target: window,
action: #selector(UIWindow.endEditing(_:))
)
)
return true
}
}
Swift 4工作
创建扩展如下所示,并在你的基本视图控制器中调用hideKeyboardWhenTappedAround()。
//
// UIViewController+Extension.swift
// Project Name
//
// Created by ABC on 2/3/18.
// Copyright © 2018 ABC. All rights reserved.
//
import UIKit
extension UIViewController {
func hideKeyboardWhenTappedAround() {
let tapGesture = UITapGestureRecognizer(target: self,
action: #selector(hideKeyboard))
view.addGestureRecognizer(tapGesture)
}
@objc func hideKeyboard() {
view.endEditing(true)
}
}
最重要的是调用Base视图控制器这样就不需要在所有视图控制器中调用所有时间。
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