我有相当多的控件分散在我的表格中的许多表格单元格中,我想知道是否有一种更简单的方法来消除键盘,而不必循环遍历所有的控件并将它们全部辞职为第一响应器。我想问题是…我如何得到当前的第一个响应器的键盘?


当前回答

在你的视图控制器的头文件中添加<UITextFieldDelegate>到你的控制器接口的定义中,以便它符合UITextField委托协议…

@interface someViewController : UIViewController <UITextFieldDelegate>

... 在控制器的实现文件(.m)中添加以下方法,或者如果你已经有一个viewDidLoad方法,则在其中添加代码…

- (void)viewDidLoad
{
    // Do any additional setup after loading the view, typically from a nib.
    self.yourTextBox.delegate = self;
}

... 然后,链接你的文本框到你的实际文本字段

- (BOOL)textFieldShouldReturn:(UITextField *)theTextField 
{
    if (theTextField == yourTextBox) {
        [theTextField resignFirstResponder];
    }
    return YES;
}

其他回答

下面是我在代码中使用的代码。它像魔法一样有效!

在yourviewcontroller.h中添加:

@property(非atomic) UITapGestureRecognizer * taprenizer;

现在在.m文件中,将这个添加到你的ViewDidLoad函数中:

- (void)viewDidLoad {
    //Keyboard stuff
    tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapAnywhere:)];
    tapRecognizer.cancelsTouchesInView = NO;
    [self.view addGestureRecognizer:tapRecognizer];
}

同样,在.m文件中添加这个函数:

- (void)handleSingleTap:(UITapGestureRecognizer *) sender
{
    [self.view endEditing:YES];
}

@Nicholas Riley &@Kendall Helmstetter Geln & @cannyboy:

绝对的辉煌!

谢谢你!

考虑到你和其他人在这篇文章中的建议,以下是我所做的:

使用时的样子:

[[self appDelegate]解聘键盘];(注意:我添加了appDelegate作为NSObject的补充,所以我可以在任何地方使用任何东西)

引擎盖下的样子:

- (void)dismissKeyboard 
{
    UITextField *tempTextField = [[[UITextField alloc] initWithFrame:CGRectZero] autorelease];
    tempTextField.enabled = NO;
    [myRootViewController.view addSubview:tempTextField];
    [tempTextField becomeFirstResponder];
    [tempTextField resignFirstResponder];
    [tempTextField removeFromSuperview];
}

EDIT

修正我的回答包括tempTextField。enabled = NO;。禁用文本字段将阻止UIKeyboardWillShowNotification和UIKeyboardWillHideNotification键盘通知发送,如果你在整个应用程序中依赖这些通知。

Try:

[self.view endEditing:YES];

用swift:

self.view.endEditing(true)

老实说,我对这里提出的任何解决方案都不感兴趣。我确实发现了一种使用TapGestureRecognizer的好方法,我认为它解决了问题的核心:当你点击键盘以外的任何东西时,忽略键盘。

In viewDidLoad, register to receive keyboard notifications and create a UITapGestureRecognizer: NSNotificationCenter *nc = [NSNotificationCenter defaultCenter]; [nc addObserver:self selector:@selector(keyboardWillShow:) name: UIKeyboardWillShowNotification object:nil]; [nc addObserver:self selector:@selector(keyboardWillHide:) name: UIKeyboardWillHideNotification object:nil]; tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapAnywhere:)]; Add the keyboard show/hide responders. There you add and remove the TapGestureRecognizer to the UIView that should dismiss the keyboard when tapped. Note: You do not have to add it to all of the sub-views or controls. -(void) keyboardWillShow:(NSNotification *) note { [self.view addGestureRecognizer:tapRecognizer]; } -(void) keyboardWillHide:(NSNotification *) note { [self.view removeGestureRecognizer:tapRecognizer]; } The TapGestureRecognizer will call your function when it gets a tap and you can dismiss the keyboard like this: -(void)didTapAnywhere: (UITapGestureRecognizer*) recognizer { [textField resignFirstResponder]; }

这个解决方案的优点是它只过滤轻敲,而不是滑动。因此,如果你在键盘上方有滚动内容,滑动仍然会滚动并显示键盘。通过在键盘消失后移除手势识别器,未来在视图上的点击将被正常处理。