只是使用这段代码在您的.m文件，它将辞职的文本字段，当用户点击文本字段之外。

 -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
  [textfield resignFirstResponder];
 }

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…

藏品视图:

// the keyboard follows the dragging touch off screen, and may be pulled upward again to cancel the dismiss
collectionView.keyboardDismissMode = .interactive
// dismisses the keyboard when a drag begins
collectionView.keyboardDismissMode = .onDrag

Swift版本，这与其他元素(如UIButton或另一个UITextField)结合使用:

override func viewDidLoad() {
    super.viewDidLoad()

    let tapper = UITapGestureRecognizer(target: self, action:#selector(endEditing))
    tapper.cancelsTouchesInView = false
    view.addGestureRecognizer(tapper)
}

我发现有些人在使用UITapGestureRecognizer方法时遇到了问题。我在保持现有按钮点击行为不变的情况下完成这一功能的最简单方法是只添加一行到@Jensen2k的答案:

[tap setCancelsTouchesInView:NO];

这使得我现有的按钮仍然可以工作，而不需要使用@Dmitry Sitnikov的方法。

在这里阅读有关属性(搜索CancelsTouchesInView): UIGestureRecognizer类引用

我不确定它将如何与滚动条一起工作，因为我看到有些人有问题，但希望其他人可能会遇到与我相同的情况。

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。