"Troubleshooting issue with Ajax call failure to local file on Windows phone 8 when using Cordova version 2.3.0rc

I recently came across an article on this site about porting a WebApp built in PhoneGap to Windows Phone 8. Intrigued, I decided to follow a Getting Started guide available here.

In my project, I am utilizing Marionette.js and Cordova 2.3.0rc2. One specific issue I encountered was with an ajax call:

 $.ajax({
    url : urlTemp + templateId + ".html",  //This points to a file in my local filesystem
    data : {},
    success : function(data) {
      App.templates[templateId] = data;
      callback.call(this, data);
    },
    error : function(err) {
      alert('ERROR LOG: Error loading Template for: ' + urlTemp + templateId + ".html");
    },
    dataType : 'text'
  });

Strangely, this ajax call always ends up in the error block when running on Windows Phone 8, even though it works perfectly fine on Android and IOS platforms.

javascriptajaxcordovawindows-phone-8

Answer №1

One solution that worked for me was adding x-wmapp0://www/ before the path to my local file.

Answer №2

For locally stored files, consider utilizing the FileReader API instead of relying on AJAX requests to access file data.

To learn more about the FileReader API, you can visit

Update: It appears that you are using version 2.3.0, so my previous comments regarding compatibility with 2.2 can be disregarded.

Answer №3

As mentioned in previous WP8 posts, ajax calls require absolute paths when referencing local files. This means adding "www/" to your file path. Instead of calling just "test.html", you should call "www/test.html" for the ajax call to function properly.

Here is a suggested solution:

1) Ensure that the "device plugin" is installed to run this code specifically on WP devices

2) Prepend "www/" before each local path whenever an ajax call is initiated

Note: This method assumes all locally referenced files are located within the root "www" folder

If using jquery mobile and some html files are stored in subfolders, adjustments will be necessary to avoid accessibility issues

The following code should be executed after phonegap (and jquery mobile) initialization:

if (typeof device !== "undefined") {    
    PLATFORM = device.platform.toLowerCase();
    if (PLATFORM == 'win32nt' || PLATFORM == 'wince') {         
        $(document).ajaxSend(function (event, jqxhr, settings) {
            if (settings.url.indexOf("http") !== 0) {
                var parts = settings.url.split("/");
                settings.url = "www/" + parts[parts.length - 1];
            }           
        });         
    }
}

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