我想知道如何使键盘消失时,用户触摸以外的UITextField。
当前回答
有一件事很重要……
添加手势识别到视图可以覆盖它的子视图。 所以只执行一个动作。 如果你想通过父视图和子视图执行多重识别操作… 你必须使用
tap.cancelsTouchesInView = false
完整代码如下:
let tap = UITapGestureRecognizer(target: self, action: #selector(self.superViewClicked))
tap.numberOfTapsRequired = 1
tap.delegate = self
tap.cancelsTouchesInView = false
self.view.addGestureRecognizer(tap)
@objc func superViewClicked(){
self.searchTF.resignFirstResponder()
}
在外面点击关闭软键盘的最佳解决方案是什么?
我将解释一个条件:
想想看:你在顶部有UISearchBar, 然后添加头表视图!
解决方法很简单:
跟踪软键盘打开或关闭 添加手势识别头视图 实现表视图didSelectRowAt的委托
完整的代码:
var isSoftKeyboardActive = false
override func viewDidLoad() {
var tap = UITapGestureRecognizer(target: self, action: #selector(self.tableHeaderClick))
tap.numberOfTapsRequired = 1
tap.delegate = self
tap.cancelsTouchesInView = false
self.headerOfTableView.addGestureRecognizer(tap)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillDisappear), name: UIResponder.keyboardWillHideNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillAppear), name: UIResponder.keyboardWillShowNotification, object: nil)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
NotificationCenter.default.removeObserver(self)
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if isSoftKeyboardActive == true{
self.searchTF.resignFirstResponder()
}else{
selectedRow = indexPath.row
performSegue(withIdentifier: "segueWebview", sender: self)
}
}
@objc func tableHeaderClick(){
self.searchTF.resignFirstResponder()
}
@objc func keyboardWillAppear() {
isSoftKeyboardActive = true
}
@objc func keyboardWillDisappear() {
isSoftKeyboardActive = false
}
它是如何工作的:
如果软键盘是打开的,用户点击头软键盘关闭 如果软键盘打开,用户点击单元格,键盘关闭,不执行单元格点击
其他回答
@Jensen2k回答的Swift版本:
let gestureRecognizer : UITapGestureRecognizer = UITapGestureRecognizer.init(target: self, action: "dismissKeyboard")
self.view.addGestureRecognizer(gestureRecognizer)
func dismissKeyboard() {
aTextField.resignFirstResponder()
}
一个衬套
self.view.addTapGesture(UITapGestureRecognizer.init(target: self, action: "endEditing:"))
在我的新发展中,我以巴里为例。它工作得很好!但我不得不包括一个轻微的变化,要求解散键盘,只有文本字段被编辑。
所以,我在Barry的例子中加入了以下内容:
- (void) textFieldDidBeginEditing:(UITextField *)textField
{
_textBeingEdited = textField;
}
-(void) textFieldDidEndEditing:(UITextField *)textField
{
_textBeingEdited = nil;
}
同时,我修改了hideKeyboard方法如下:
- (IBAction)hideKeyboard:(id)sender
{
// Just call resignFirstResponder on all UITextFields and UITextViews in this VC
// Why? Because it works and checking which one was last active gets messy.
//UITextField * tf = (UITextField *) sender;
[_textBeingEdited resignFirstResponder];
}
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
}
}
我试了这里的很多回答,都不太走运。我的点击手势识别器总是导致我的UIButtons在点击时不响应,即使我将手势识别器的cancelsTouchesInView属性设置为NO。
这就是最终解决问题的方法:
有一个ivar:
UITapGestureRecognizer *_keyboardDismissGestureRecognizer;
当文本字段开始编辑时,设置手势识别器:
- (void) textFieldDidBeginEditing:(UITextField *)textField
{
if(_keyboardDismissGestureRecognizer == nil)
{
_keyboardDismissGestureRecognizer = [[[UITapGestureRecognizer alloc]
initWithTarget:self
action:@selector(dismissKeyboard)] autorelease];
_keyboardDismissGestureRecognizer.cancelsTouchesInView = NO;
[self.view addGestureRecognizer:_keyboardDismissGestureRecognizer];
}
}
窍门在于如何设置遣散键盘方法:
- (void) dismissKeyboard
{
[self performSelector:@selector(dismissKeyboardSelector) withObject:nil afterDelay:0.01];
}
- (void) dismissKeyboardSelector
{
[self.view endEditing:YES];
[self.view removeGestureRecognizer:_keyboardDismissGestureRecognizer];
_keyboardDismissGestureRecognizer = nil;
}
我猜有一些关于从触摸处理执行堆栈中获得dismissKeyboardSelector执行的东西…
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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