Question

所以我有一个UITextView，我用它来允许用户提交一些文字。

我的问题是，我似乎无法弄清楚如何通过点击UITextView来让用户“取消”。

Answer 1

简化tuzzolotron's answer：以下插座在您的xib中正确连接

    IBOutlet UITextView *myTextView;

在视图控制器中使用它：

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [[event allTouches] anyObject];
    if ([myTextView isFirstResponder] && [touch view] != myTextView) {
        [myTextView resignFirstResponder];
    }
    [super touchesBegan:touches withEvent:event];
}

点击文本视图外部的视图控制器视图，将关闭第一个响应者，关闭键盘。

Answer 2

我在使用UITableViews，Searchbar和键盘时经常使用的另一种方法是，我认为你可以将它应用到文本字段

UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
[self.tableView addGestureRecognizer:gestureRecognizer];
gestureRecognizer.cancelsTouchesInView = NO;  // this prevents the gesture recognizers to 'block' touches
[gestureRecognizer release];

然后，这是简单的回调函数

- (void)hideKeyboard {
    [myTextField resignFirstResponder];
}

希望有所帮助

Answer 3

在我看来：

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [touches anyObject];

    // pass touches up to viewController
    [self.nextResponder touchesBegan:touches withEvent:event];
}

在我的viewcontroller中：

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [[event allTouches] anyObject];
    if (keyboardShown && [touch view] != self.TextView) 
    {
         [self.TextView resignFirstResponder];
    }
    [super touchesBegan:touches withEvent:event];
}

- (void)keyboardWasShown:(NSNotification*)aNotification
{    
        keyboardShown = YES;
}

Answer 4

这是一篇很老的帖子，但是当我发现一些更简单的东西（当时可能没有它）时，我正在实施这个解决方案。

[self.myTextView endEditing：YES];

我使用的是UITableView，所以我把这一行放在了didSelectRowAtIndexPath：方法上。到目前为止，这么好......

Answer 5

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    var touch = event.allTouches()?.anyObject() as UITouch

    if( textfield.isFirstResponder() && touch.view != textfield) {
        textfield.resignFirstResponder()
        NSLog("Resigning first responder since touches began outside")
    }

    super.touchesBegan(touches, withEvent: event)
}

哦，霍洛夫的回答对我也有用。这是简单的快速等价物。

Answer 6

这是swift 3代码

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    if let touch = touches.first {
        if textField.isFirstResponder && touch.view != textField {
            textField.resignFirstResponder()
        }
    }
    super.touchesBegan(touches, with: event)
}

Answer 7

这是一个更好的解决方案，它不依赖于插座，并且可以与控制器中的任意数量的UITextField对象一起使用。

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [[event allTouches] anyObject];

    if (![[touch view] isKindOfClass:[UITextField class]]) {
        [self.view endEditing:YES];
    }
    [super touchesBegan:touches withEvent:event];
}

Answer 8

非常简单

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self.view endEditing:YES];
}

Answer 9

我想要一个适用于从任何视图中退出的版本，而不需要为每个视图提供特定的插座。这是我的解决方案，我将其放入我的标准容器视图中。

它正在使用MonoTouch C＃，但显然如何将其转换为Objective-C

    private void findAndResignFirstResponder(UIView node=null) {
        if (node == null) { return; }
        if (node.IsFirstResponder) {
            node.ResignFirstResponder();
            return;
        }

        foreach (UIView view in node.Subviews) {
            findAndResignFirstResponder(node:view);
        }
    }

    private bool haveDrag = false;
    public override void TouchesEnded(NSSet touches, UIEvent evt) {
        if (!haveDrag) {
            UITouch touch = (UITouch)evt.AllTouches.AnyObject;
            if (!touch.View.CanBecomeFirstResponder) {
                this.findAndResignFirstResponder(this);
                Console.WriteLine("resign");
            }
        }
        base.TouchesEnded (touches, evt);
    }
    public override void TouchesMoved(NSSet touches, UIEvent evt) {
        haveDrag = true;
        base.TouchesMoved (touches, evt);
    }

    public override void TouchesBegan(NSSet touches, UIEvent evt) {
        haveDrag = false;
        base.TouchesBegan (touches, evt);
    }

Answer 10

我这样做......

在ViewController的@interface中添加对TextView的引用：

@property (weak, nonatomic) IBOutlet UITextView *yourTextView;

在ViewController的@implementation中重写此方法：

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
    if ([self.yourTextView isFirstResponder]) {
      [self.yourTextView resignFirstResponder];
    }
}

在UITextView上失去焦点时隐藏键盘

10 个答案: