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
我更喜欢这样一句话:
view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: "dismissKeyboardFromView:"))
只要把它放在override viewDidLoad函数中,不管你想让它发生在哪个子类UIViewController中,然后把下面的代码放在你的项目中的一个新的空文件中,名为“UIViewController+dismissKeyboard.swift”:
import UIKit
extension UIViewController {
// This function is called when the tap is recognized
func dismissKeyboardFromView(sender: UITapGestureRecognizer?) {
let view = sender?.view
view?.endEditing(true)
}
}
其他回答
我更喜欢这样一句话:
view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: "dismissKeyboardFromView:"))
只要把它放在override viewDidLoad函数中,不管你想让它发生在哪个子类UIViewController中,然后把下面的代码放在你的项目中的一个新的空文件中,名为“UIViewController+dismissKeyboard.swift”:
import UIKit
extension UIViewController {
// This function is called when the tap is recognized
func dismissKeyboardFromView(sender: UITapGestureRecognizer?) {
let view = sender?.view
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
}
}
我找到了一个简单的解决办法: 1. 添加UITapGestureRecognizer到你的视图控制器 2. 添加IBAction到你的UITapGestureRecognizer 3.最后,您可以放弃第一个响应器
class ViewController: UIViewController
{
@IBOutlet var tap: UITapGestureRecognizer!
@IBOutlet weak var label: UILabel!
@IBOutlet weak var textField: UITextField!
override func viewDidLoad()
{
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
@IBAction func dismissUsingGesture(_ sender: UITapGestureRecognizer)
{
self.textField.resignFirstResponder()
label.text = textField.text!
}
}
override func viewDidLoad() {
super.viewDidLoad()
self.view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(tap)))
}
func tap(sender: UITapGestureRecognizer){
print("tapped")
view.endEditing(true)
}
试试这个,很管用
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