我想知道如何使键盘消失时,用户触摸以外的UITextField。
当前回答
设置文本字段委托视图didload: 重载函数viewDidLoad() { super.viewDidLoad () self. usertext .delegate = self } 添加此函数: func textFieldShouldReturn(userText: UITextField! { userText.resignFirstResponder () 返回true; }
其他回答
在这种情况下,可以使用ScrollView,并添加到文本字段在ScrollView和我想点击ScrollView和视图,然后解散键盘。为了以防万一,我尝试创建了示例代码。像这样,
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var scrollView: UIScrollView!
@IBOutlet weak var textField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(ViewController.tap(_:)))
view.addGestureRecognizer(tapGesture)
// Do any additional setup after loading the view, typically from a nib.
}
func tap(gesture: UITapGestureRecognizer) {
textField.resignFirstResponder()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
你的故事板看,就像。
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。
这里有很多关于使用UITapGestureRecognizer的很好的答案——所有这些都打破了UITextField的clear (X)按钮。解决方案是通过它的委托来抑制手势识别器:
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
BOOL touchViewIsButton = [touch.view isKindOfClass:[UIButton class]];
BOOL touchSuperviewIsTextField = [[touch.view superview] isKindOfClass:[UITextField class]];
return !(touchViewIsButton && touchSuperviewIsTextField);
}
这不是最可靠的解决方案,但对我来说很管用。
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…
- (void)viewDidLoad
{
[super viewDidLoad];
UITapGestureRecognizer *singleTapGestureRecognizer = [[UITapGestureRecognizer alloc]
initWithTarget:self
action:@selector(handleSingleTap:)];
[singleTapGestureRecognizer setNumberOfTapsRequired:1];
[singleTapGestureRecognizer requireGestureRecognizerToFail:singleTapGestureRecognizer];
[self.view addGestureRecognizer:singleTapGestureRecognizer];
}
- (void)handleSingleTap:(UITapGestureRecognizer *)recognizer
{
[self.view endEditing:YES];
[textField resignFirstResponder];
[scrollView setContentOffset:CGPointMake(0, -40) animated:YES];
}
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