通过触摸UITableView的背景来关闭键盘

Question

我有一个UITableView与UITextFieldS作为细胞.当UITableView触摸背景时,我想解除键盘.我试图通过创建一个UIButton大小UITableView并将其放在后面来做到这一点UITableView.唯一的问题是,UIButton即使触摸在UITableView上,也能捕获所有触摸.我究竟做错了什么？

谢谢!

Answer 1

这可以通过创建UITapGestureRecognizer对象轻松完成(默认情况下,这将在单击时检测"手势",因此无需进一步自定义),指定触发手势时的目标/动作,然后附加手势识别器对象到你的表视图.

也许在你的viewDidLoad方法中:

UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
[self.tableView addGestureRecognizer:gestureRecognizer];

和hideKeyboard方法可能是这样的:

- (void) hideKeyboard {
    [textField1 resignFirstResponder];
    [textField2 resignFirstResponder];
    ...
    ...
}

请注意,触摸UITextField对象内部时不会触发手势.它虽然在UITableView背景,页脚视图,标题视图和UILabels内部单元格等上被触发.

Answer 2

如果设置:UITapGestureRecognizer解决方案适用于表格单元格选择:

gestureRecognizer.cancelsTouchesInView = NO;

Answer 3

这是最好的方法.就这样做吧

[self.view endEditing:YES];

要么

[[self.tableView superView] endEditing:YES];

Answer 4

您也可以从Storyboard中执行此操作:

Answer 5

作为UITableView子类UIScrollView,下面实现一个委托方法提供了一个非常简单,快速的解决方案.甚至不需要参与,resignFirstResponder因为视图层次结构内省并找到当前响应者并要求它重新签署响应者状态.

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
    [self.view endEditing:YES];
}

并记得添加UIScrollViewDelegate到头文件.

Answer 6

首先,听scrollViewWillBeginDragging你UIViewController的加入UIScrollViewDelegate:

在.h文件中:

@interface MyViewController : UIViewController <UIScrollViewDelegate> 

在.m文件中:

- (void)scrollViewWillBeginDragging:(UIScrollView *)activeScrollView {

    [self dismissKeyboard];

}

然后听其他互动:

- (void)setupKeyboardDismissTaps {

    UISwipeGestureRecognizer *swipeUpGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];
    swipeUpGestureRecognizer.cancelsTouchesInView = NO;
    swipeUpGestureRecognizer.direction = UISwipeGestureRecognizerDirectionUp;
    [self.tableView addGestureRecognizer:swipeUpGestureRecognizer];

    UISwipeGestureRecognizer *swipeDownGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];
    swipeDownGestureRecognizer.cancelsTouchesInView = NO;
    swipeDownGestureRecognizer.direction = UISwipeGestureRecognizerDirectionDown;
    [self.tableView addGestureRecognizer:swipeDownGestureRecognizer];

    UISwipeGestureRecognizer *swipeLeftGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];
    swipeLeftGestureRecognizer.cancelsTouchesInView = NO;
    swipeLeftGestureRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
    [self.tableView addGestureRecognizer:swipeLeftGestureRecognizer];

    UISwipeGestureRecognizer *swipeRightGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];
    swipeRightGestureRecognizer.cancelsTouchesInView = NO;
    swipeRightGestureRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
    [self.tableView addGestureRecognizer:swipeRightGestureRecognizer];


    UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];
    tapGestureRecognizer.cancelsTouchesInView = NO;
    [self.tableView addGestureRecognizer:tapGestureRecognizer];

}

然后执行dismissKeyboard:

- (void)dismissKeyboard {

    NSLog(@"dismissKeyboard");

    [yourTextFieldPointer resignFirstResponder];

}

如果像我一样,你想在自定义表格单元格中关闭UITextField的键盘:

- (void)dismissKeyboard {

    NSLog(@"dismissKeyboard");

    CustomCellClass *customCell = [tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]];
    [customCell.textFieldInCell resignFirstResponder]; 

}

希望能帮助任何人搜索!!

Answer 7

tableView.keyboardDismissMode = .onDrag

Answer 8

我是这样做的:

在TableViewController中创建一个方法来停用第一个响应者(在那个时候是你的TextBox)

- (BOOL)findAndResignFirstResonder:(UIView *)stView {
    if (stView.isFirstResponder) {
        [stView resignFirstResponder];
        return YES;     
    }

    for (UIView *subView in stView.subviews) {
        if ([self findAndResignFirstResonder:subView]) {
            return YES;
        }
    }
    return NO;
}

在tableView:didSelectRowAtIndexPath:调用前一个方法:

- (void)tableView:(UITableView *)tableView
                             didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    ...
    [self findAndResignFirstResonder: self.view];
    ...
}

Answer 9

这是您的编码乐趣的快速版本:

它添加了一个轻敲手势识别器然后解除键盘.不需要TextField的插座!

override func viewDidLoad() {
    super.viewDidLoad()
    view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: "handleTap:"))
}

func handleTap(sender: UITapGestureRecognizer) {
    if sender.state == .Ended {
        view.endEditing(true)
    }
    sender.cancelsTouchesInView = false
}

Answer 10

有Swift 3版本，没有阻止单元格上的点击。

在viewDidLoad()方法中：

let dismissKeyboardGesture = UITapGestureRecognizer(target: self, action: #selector(hideKeyboard))
dismissKeyboardGesture.cancelsTouchesInView = false
tableView.addGestureRecognizer(dismissKeyboardGesture)

而且hideKeyboard是这样的：

func hideKeyboard() {
    view.endEditing(true)
}

Answer 11

我有一个UITableViewController实施touchesBegan:withEvent:并没有为我工作.

这是有效的:

迅速:

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    view.endEditing(true)
}

Objective-C的:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    [self.view endEditing:YES];
}