Theme auto-update problem WordPress

Ryan Hellyer comments:

I don't know anything about $api_url. Where are you suggesting that be?

The theme was provided above:
http://demo.pixopoint.com/static/randomtesttheme.zip

And the URL for the corresponding JSON file (as declared in functions.php) is here ... http://wppaintbrush.com/?pixopoint_autoupdate_api=randomtesttheme

Ryan Hellyer comments:

Oh, and what are you wanting login details for?

This is a problem with a theme. You can just install it yourself.

Abdessamad Idrissi comments:

Ok if I understood your question: you have created a theme and wanted to share/sell it to the public and you want the users of the theme to be able to automaticlly update the theme you have created.. wright?
If so, then you would need to specify a link that your somewhere-installed-theme checks to see if you have made updates to it or not.. that's why you need an API in your server that communicates whith blogs who installed your theme and provide them with necessary data to download new versions of the theme that you have created.

PS; I needed the temporary login to check if you have setup the API directory.

Ryan Hellyer comments:

Did you look at the theme?

The API stuff is in there. That's what I'm stuck on and what the question is about.

Ryan Hellyer comments:

I've updated the post with specific information about where the problem lies.

Abdessamad Idrissi comments:

I found it :)
the method you are using depends on the filter

add_filter('pre_set_site_transient_update_themes', array($this, 'onTransientUpdate'));


to make it work I edited the functions.php


require( get_template_directory() . '/theme-update-checker.php' );

$example_update_checker = new ThemeUpdateChecker(
'randomtesttheme',
'http://wppaintbrush.com/?pixopoint_autoupdate_api=randomtesttheme'
);
add_action( 'load-update-core.php', $example_update_checker->checkForUpdates() );


Ryan Hellyer comments:

Thanks. That looks like it :)

I'll use your code for testing it with.

Ryan Hellyer comments:

It needs to have a JSON header which may have been where you had difficulties perhaps.

Ryan Hellyer comments:

Since you helped me on Twitter with this I voted to award part of the prize to you too.