The ASP .NET MVC4 web application seems to be having trouble loading the mobile CSS styles for the mobile

Currently, I am in the process of developing a web application using ASP.NET MVC4. My goal is to create specific views tailored for mobile browsers. To achieve this, I have been following a tutorial provided at this link. One of the steps involved installing the jQuery.Mobile.MVC package and adding a line to the Global.asax file as instructed. Upon completing the installation, a file named _Layout.Mobile.cshtml was generated, which appears as follows:

_Layout.Mobile.cshtml

    <!DOCTYPE html> 
<html> 
    <head> 
        <meta charset="utf-8" />
        <title>@ViewBag.Title</title> 
        <meta name="viewport" content="width=device-width" />
        @Styles.Render("~/Content/Mobile/css", "~/Content/jquerymobile/css")
        @Scripts.Render("~/bundles/jquery", "~/bundles/jquerymobile")
        <script>
            $(document).ready(function () {
                $.mobile.ajaxEnabled = false; 
            });
        </script>
    </head> 
<body> 

    <div data-role="page" data-theme="a">
        @Html.Partial("_ViewSwitcher")

        <div data-role="header">
            <h1>@ViewBag.Title</h1>
        </div>

        <div data-role="content">
            @RenderSection("featured", false)
            @RenderBody()       
        </div>

    </div>

</body>
</html>

In addition to this layout file, I also incorporated a mobile view specifically for the index page.

Index.Mobile.cshtml

@{
    ViewBag.Title = "Home";
}


<ul data-role="listview" data-inset="true">
    <li data-role="list-divider">Navigation</li>
                            <li>@Html.ActionLink("Home", "Index", "Home")</li>
                            <li>@Html.ActionLink("About", "About", "Home")</li>
                            <li>@Html.ActionLink("Contact", "Contact", "Home")</li>
                        </ul>

When I tried opening the webpage on an iPhone simulator, the appearance differed significantly from what was illustrated in the tutorial. Instead of the expected layout, all I saw was plain text displayed on a blank page. Examining the page source, I noticed that only the site.Mobile.css file had been loaded.

<head> 
        <meta charset="utf-8" />
        <title>Home</title> 
        <meta name="viewport" content="width=device-width" />
        <link href="/Content/Site.Mobile.css" rel="stylesheet"/>

        <script src="/Scripts/jquery-2.0.3.js"></script>
<script src="/Scripts/jquery.mobile-1.3.1.js"></script>

        <script>
            $(document).ready(function () {
                $.mobile.ajaxEnabled = false; 
            });
        </script>
    </head> 

To investigate further, I decided to create a new web application project using the Mobile Application template within VS2012. Upon running this new project and examining the page source, I observed multiple css files being loaded.

<head>
        <meta charset="utf-8" />
        <title>Log in</title>
        <meta name="viewport" content="width=device-width" />
        <link href="/favicon.ico" rel="shortcut icon" type="image/x-icon" />
        <link href="/Content/jquery.mobile-1.2.0.css" rel="stylesheet"/>
<link href="/Content/jquery.mobile.structure-1.2.0.css" rel="stylesheet"/>
<link href="/Content/jquery.mobile.theme-1.2.0.css" rel="stylesheet"/>
<link href="/Content/site.css" rel="stylesheet"/>

        <script src="/Scripts/modernizr-2.6.2.js"></script>

    </head>

All necessary files were present in my webApp project, yet certain files failed to load properly. This discrepancy has left me puzzled about where I might have gone wrong. Any insights or suggestions would be greatly appreciated.

Answer №1

After encountering a tricky solution, I was able to resolve the issue at hand. In order to assist others facing the same problem, I will outline the steps I took. I made a crucial change in the App_Start/BundleMobileConfig.cs file:

bundles.Add(new StyleBundle("~/Content/jquerymobile/css").Include(
            "~/Content/jquery.mobile-{version}.css"
            ));

which I modified to:

bundles.Add(new StyleBundle("~/Content/jquerymobile/css").Include(
            "~/Content/jquery.mobile-1.3.1.min.css",
            "~/Content/jquery.mobile.structure-1.3.1.min.css",
            "~/Content/jquery.mobile.theme-1.3.1.min.css"
            ));

It appears that the stylebundle was expecting the original version of the jquery mobile css while I only had the minified one. This discrepancy may be attributed to a bug during the installation process of the jquery.mobile.MVC package.

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