Bootstrap v2 Dropdown Navigation not working on Mobile Browsers

I am having an issue with the Bootstrap menu dropdowns on mobile devices (Bootstrap 2). A similar question was asked here with dropdown buttons, however the answer for that was an inherent bug within bootstrap which was solved in an update. I appear to be having the same issue so perhaps it's down to my markup?

I have a collapsable navbar with dropdowns and everything works perfectly on desktop browsers. However on a mobile, the dropdowns will open up when you click on the dropdown but clicking any dropdown links will just fold the dropdown back up again — the links cannot be reached. I have tried various bootstrap versions and cannot correct this so I can only imagine it is my markup. Here it is:

 <header class="navbar">
    <div class="navbar-inner">
        <div class="container">
            <a href="#"><h1>Branding</h1></a>
            <button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse"> Menu </button>
            <div class="nav-collapse collapse">
                <ul class="nav">
                    <li><a href="#">Menu Item 1</a></li>
                    <li class="dropdown">                    
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">Menu Item 2 (Dropdown)<b class="caret"></b></a>      
                        <ul class="dropdown-menu">
                            <li><a href="#">Dropdown Item 1</a></li>
                            <li><a href="#">Dropdown Item 2</a></li>
                            <li><a href="#">Dropdown Item 3</a></li>  
                            <li><a href="#">Dropdown Item 4</a></li>                           
                        </ul>
                    </li>
                    <li><a href="#">Menu Item 3</a></li>
                    <li><a href="#">Menu Item 4</a></li>
                </ul>
            </div><!--/.nav-collapse -->
        </div>
    </div>
</header>

Here's an example replicating the code (sorry, can't send the site): http://jsfiddle.net/yDjw8/1/

(Problem can only be seen/replicated on mobile — I'm using iOS)

Any help would be much appreciated.

Solution 1:

In your minified bootstrap.min.js file, find the substring

"ontouchstart"

and replace it with

"disable-ontouchstart"

Check out this similiar SO question: Bootstrap Collapsed Menu Links Not Working on Mobile Devices

Solution 2:

Found this fix for version 2.3.2:

<script>
jQuery(document).ready(function($)  {
$("li.dropdown a").click(function(e){
    $(this).next('ul.dropdown-menu').css("display", "block");
    e.stopPropagation();
  });
}); </script>     

Worked on two separate nav systems I built.

Solution 3:

I am using BootStrap 3.1.1. I have tried many answers, dropdown menu works fine on Android devices but still doesn't works on iOS device. Finally I find root cause of the problem.

safari on iPhone only support click event for <a> and <input> element. See this passage Click event delegation on the iPhone.

So we need to add custom click delegation. Following code will solve the problem.

$('[data-toggle=dropdown]').each(function() {
 this.addEventListener('click', function() {}, false);
});

Solution 4:

I solved this same problem doing this:

1.Open your js/bootstrap-dropdown.js or the minified version of it.

2.Find for the lines or places for: touchstart.dropdown.data-api

3.There should be only 4 occurs of it. Something like this:

.on('click.dropdown.data-api touchstart.dropdown.data-api', clearMenus)
.on('click.dropdown touchstart.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
.on('click.dropdown.data-api touchstart.dropdown.data-api'  , toggle, Dropdown.prototype.toggle)
.on('keydown.dropdown.data-api touchstart.dropdown.data-api', toggle + ', [role=menu]' , Dropdown.prototype.keydown)

You should insert this new line between the 2nd and 3rd occurences:

.on('touchstart.dropdown.data-api', '.dropdown-menu', function (e) { e.stopPropagation() })

4.Your news piece of code must be something like this:

.on('click.dropdown.data-api touchstart.dropdown.data-api', clearMenus)
.on('click.dropdown touchstart.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
.on('touchstart.dropdown.data-api', '.dropdown-menu', function (e) { e.stopPropagation() })
.on('click.dropdown.data-api touchstart.dropdown.data-api'  , toggle, Dropdown.prototype.toggle)
.on('keydown.dropdown.data-api touchstart.dropdown.data-api', toggle + ', [role=menu]' , Dropdown.prototype.keydown)

Be careful on minified versions of Bootstrap.js... so you must concatenate the new line at the exact position on it.

Good luck! :)