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
我没有看到它被提到过,但是NotificationCenter可以告诉你键盘何时打开和关闭。例如,如果你想改变cancelsTouchesInView或一起删除手势识别器,这可以被使用。
例子:
var dismissKeyboardGestureRecognizer = UITapGestureRecognizer()
override func viewDidLoad() {
super.viewDidLoad()
//Setup dismiss keyboard gesture
self.dismissKeyboardGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(dismissKeyboard))
//Add Notifications
NotificationCenter.default.addObserver(self, selector: #selector(keyboardDidShow), name:UIResponder.keyboardDidShowNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardDidHide), name:UIResponder.keyboardDidHideNotification, object: nil)
}
@objc func keyboardDidShow() {
dismissKeyboardGestureRecognizer.cancelsTouchesInView = true
view.addGestureRecognizer(dismissKeyboardGestureRecognizer)
}
@objc func keyboardDidHide() {
dismissKeyboardGestureRecognizer.cancelsTouchesInView = false
view.removeGestureRecognizer(dismissKeyboardGestureRecognizer)
}
@objc func dismissKeyboard() {
view.endEditing(true)
}
其他回答
使用IQKeyboardmanager,将帮助您解决简单.....
/////////////////////////////////////////
[如何禁用键盘..][1].
import UIKit
class ViewController: UIViewController,UITextFieldDelegate {
@IBOutlet weak var username: UITextField!
@IBOutlet weak var password: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
username.delegate = self
password.delegate = self
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func textFieldShouldReturn(textField: UITextField!) -> Bool // called when 'return' key pressed. return NO to ignore.
{
textField.resignFirstResponder()
return true;
}
override func touchesBegan(_: Set<UITouch>, with: UIEvent?) {
username.resignFirstResponder()
password.resignFirstResponder()
self.view.endEditing(true)
}
}
viewDidLoad()方法中只有一行代码:
view.addGestureRecognizer(UITapGestureRecognizer(target: view, action: #selector(UIView.endEditing(_:))))
您还可以添加一个点击手势识别器来重新使用键盘。: D
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let recognizer = UITapGestureRecognizer(target: self, action: Selector("handleTap:"))
backgroundView.addGestureRecognizer(recognizer)
}
func handleTap(recognizer: UITapGestureRecognizer) {
textField.resignFirstResponder()
textFieldtwo.resignFirstResponder()
textFieldthree.resignFirstResponder()
println("tappped")
}
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()
//Looks for single or multiple taps.
let tap = UITapGestureRecognizer(target: self, action: #selector(UIInputViewController.dismissKeyboard))
//Uncomment the line below if you want the tap not not interfere and cancel other interactions.
//tap.cancelsTouchesInView = false
view.addGestureRecognizer(tap)
}
//Calls this function when the tap is recognized.
@objc func dismissKeyboard() {
//Causes the view (or one of its embedded text fields) to resign the first responder status.
view.endEditing(true)
}
如果你打算在多个uiviewcontroller中使用这个功能,这里有另一种方法来完成这个任务:
// Put this piece of code anywhere you like
extension UIViewController {
func hideKeyboardWhenTappedAround() {
let tap = UITapGestureRecognizer(target: self, action: #selector(UIViewController.dismissKeyboard))
tap.cancelsTouchesInView = false
view.addGestureRecognizer(tap)
}
@objc func dismissKeyboard() {
view.endEditing(true)
}
}
现在在每个UIViewController中,你要做的就是调用这个函数:
override func viewDidLoad() {
super.viewDidLoad()
self.hideKeyboardWhenTappedAround()
}
这个函数是我的repo中包含的标准函数,它包含了很多有用的Swift扩展,比如这个,看看:https://github.com/goktugyil/EZSwiftExtensions
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