Updater Implementation for WordPress Plugins -- Activation Errors
Sample code to illustrate how to show an error message from the activation method.
<?php/**
* This is a means of catching errors from the activation method above and displaying it to the customer
*/functionedd_sample_admin_notices(){if(isset($_GET['sl_activation'])&&!empty($_GET['message'])){switch($_GET['sl_activation']){case'false':$message=urldecode($_GET['message']);?><divclass="error"><p><?phpecho$message;?></p></div><?phpbreak;case'true':default:// Developers can put a custom success message here for when activation is successful if they way.break;}}}add_action('admin_notices','edd_sample_admin_notices');