取消视图中的键盘

    //取消键盘
   UIWindow* window = [UIApplication sharedApplication].keyWindow;
   [self findAndResignFirstResponder:window];

- (void)findAndResignFirstResponder:(UIView *)tempview
{
    
    for (UIView* subView in tempview.subviews)
        
    {
        if (subView.isFirstResponder)
        {
            [subView resignFirstResponder];
        }
        else
        {
            [self findAndResignFirstResponder:subView];
        }
    }
}