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
你可以使用swift
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
super.touchesBegan(touches, with: event)
view.endEditing(true)
}
其他回答
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)
}
对于Swift 3来说,这非常简单
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
self.view.endEditing(true)
}
如果你想隐藏键盘按回车键
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
但在第二种情况下,你还需要通过委托从所有文本字段的ViewController在主。故事板
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
在Swift 4中,添加@objc:
在viewDidLoad中:
let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard))
view.addGestureRecognizer(tap)
功能:
@objc func dismissKeyboard() {
view.endEditing(true)
}
以下是如何通过点击其他地方来消除键盘,使用Swift 5只需两行。
(我讨厌添加另一个答案,但由于这是谷歌上的顶级结果,我将帮助像我这样的新手。)
在你的ViewController.swift中,找到viewDidLoad()函数。
加上这两行:
let tap: UIGestureRecognizer = UITapGestureRecognizer(target: self.view, action: #selector(UIView.endEditing))
view.addGestureRecognizer(tap)
推荐文章
- 如何在iPhone/iOS上删除电话号码的蓝色样式?
- 检测视网膜显示
- 如何在UIImageView中动画图像的变化?
- 如何从iPhone访问SOAP服务
- 如何分配一个行动UIImageView对象在Swift
- 使用NSURLSession发送POST请求
- 如果用户强制退出,iOS会将我的应用启动到后台吗?
- 如何从iOS应用程序启动Safari和打开URL
- 在React Native中获取一个视图的大小
- 在iOS8中使用Swift更改特定视图控制器的状态栏颜色
- 打印一个可变内存地址在swift
- 应用程序加载器在上传iOS应用程序时卡住了“与iTunes商店进行身份验证”
- 自动布局- UIButton的固有大小不包括标题插入
- 如何更改导航栏上“后退”按钮的标题
- 我如何获得iOS 7默认的蓝色编程?