我想知道如何使键盘消失时,用户触摸以外的UITextField。
当前回答
斯威夫特4 oneliner
view.addGestureRecognizer(UITapGestureRecognizer(target: view, action: #selector(UIView.endEditing(_:))))
其他回答
发送消息resignFirstResponder的文本文件,把它放在那里。请参阅这篇文章了解更多信息。
斯威夫特4
用这个扩展方法设置你的UIViewController,例如在viewDidLoad中:
override func viewDidLoad() {
super.viewDidLoad()
self.setupHideKeyboardOnTap()
}
即使点击导航栏,键盘也会被取消。
import UIKit
extension UIViewController {
/// Call this once to dismiss open keyboards by tapping anywhere in the view controller
func setupHideKeyboardOnTap() {
self.view.addGestureRecognizer(self.endEditingRecognizer())
self.navigationController?.navigationBar.addGestureRecognizer(self.endEditingRecognizer())
}
/// Dismisses the keyboard from self.view
private func endEditingRecognizer() -> UIGestureRecognizer {
let tap = UITapGestureRecognizer(target: self.view, action: #selector(self.view.endEditing(_:)))
tap.cancelsTouchesInView = false
return tap
}
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
super.view.endEditing(true)
super.touchesBegan(touches, withEvent: event)
}
你需要添加一个UITapGestureRecogniser并将其分配给视图,然后在它的选择器上的UITextField上调用resign first responder。
代码:
在viewDidLoad
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];
[self.view addGestureRecognizer:tap];
在dismissKeyboard:
-(void)dismissKeyboard
{
[aTextField resignFirstResponder];
}
(其中,aTextField是负责键盘的文本字段)
Swift 3版本是这样的
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard (_:)))
self.view.addGestureRecognizer(tapGesture)
对于dismissKeyboard
@objc func dismissKeyboard (_ sender: UITapGestureRecognizer) {
aTextField.resignFirstResponder()
}
最简单和最短的方法之一是将此代码添加到viewDidLoad
[self.view addGestureRecognizer:[[UITapGestureRecognizer alloc]
initWithTarget:self.view
action:@selector(endEditing:)]];
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