比Meagar的回答更简单

覆盖touchesBegan: withEvent:

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

当你在背景中触摸任何地方时，这将使键盘消失。

在swift 3中，您可以执行以下操作

UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)

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];

Try:

[self.view endEditing:YES];

你应该发送enditing:到工作窗口作为UIView的子类

[[UIApplication sharedApplication].windows.firstObject endEditing:NO];

添加一个点击手势识别器到您的视图。并定义为ibaction

你的。m文件就像

    - (IBAction)hideKeyboardGesture:(id)sender {
    NSArray *windows = [UIApplication sharedApplication].windows;
    for(UIWindow *window in windows) [window endEditing:true];
    [[UIApplication sharedApplication].keyWindow endEditing:true];
}

这对我很有效