Share a thread between diffrent activities
<p>I'm about to develop an application for Android.</p>

<p>I need to continously run an update thread that executes a task in a given intervall. And this thread needs to be shared between activites.</p>

<p>I would also like to notify the active <code>Activity</code> when the thread executes a task.</p>

<p>In iOS I would execute a thread from the <code>AppDelegate</code> and then send notifications, but how do I achive this with the Android SDK?</p>

<p>Thanks!</p>
