这里有很多过于复杂的答案，也许是因为这在iOS文档中不容易找到。约瑟夫在上面写着:

[[view window] endEditing:YES];

子类化你的文本字段…还有textviews

在子类中放入此代码..

-(void)conformsToKeyboardDismissNotification{

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(dismissKeyBoard) name:KEYBOARD_DISMISS object:nil];
}

-(void)deConformsToKeyboardDismissNotification{

    [[NSNotificationCenter defaultCenter] removeObserver:self name:KEYBOARD_DISMISS object:nil];
}

- (void)dealloc{
    [[NSNotificationCenter defaultCenter] removeObserver:self];
    [self resignFirstResponder];
}

在textfield委托中(类似于textview委托)

-(void)textFieldDidBeginEditing:(JCPTextField *)textField{
     [textField conformsToKeyboardDismissNotification];
}


- (void)textFieldDidEndEditing:(JCPTextField *)textField{
    [textField deConformsToKeyboardDismissNotification];
}

都准备好了. .现在只需从代码中的任何地方发布通知。它将放弃任何键盘。

从UITableView和UIScrollView中取消键盘的最好方法是:

tableView.keyboardDismissMode = UIScrollViewKeyboardDismissModeOnDrag

@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。

杰里米的回答不太适合我，我想是因为我在一个选项卡视图中有一个导航堆栈，上面有一个模态对话框。我现在使用下面的，它是为我工作，但你的里程可能会有所不同。

 // dismiss keyboard (mostly macro)
[[UIApplication sharedApplication].delegate dismissKeyboard]; // call this in your to app dismiss the keybaord

// --- dismiss keyboard (in indexAppDelegate.h) (mostly macro)
- (void)dismissKeyboard;

// --- dismiss keyboard (in indexAppDelegate.m) (mostly macro)
// do this from anywhere to dismiss the keybard
- (void)dismissKeyboard {    // from: http://stackoverflow.com/questions/741185/easy-way-to-dismiss-keyboard

    UITextField *tempTextField = [[UITextField alloc] initWithFrame:CGRectZero];

    UIViewController *myRootViewController = <#viewController#>; // for simple apps (INPUT: viewController is whatever your root controller is called.  Probably is a way to determine this progragrammatically)
    UIViewController *uivc;
    if (myRootViewController.navigationController != nil) { // for when there is a nav stack
        uivc = myRootViewController.navigationController;
    } else {
        uivc = myRootViewController;
    }

    if (uivc.modalViewController != nil) { // for when there is something modal
        uivc = uivc.modalViewController;
    } 

    [uivc.view  addSubview:tempTextField];

    [tempTextField becomeFirstResponder];
    [tempTextField resignFirstResponder];
    [tempTextField removeFromSuperview];
    [tempTextField release];

}

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。