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    <blockquote> <p>How can I set up my Activity to be listening to the Service? Is this the best way to approach this problem?</p> </blockquote> <p>You have three major options, as I see it:</p> <ol> <li><p>Polling. The <code>Activity</code> periodically asks the <code>Service</code> for the latest data. IMHO, this option sucks, but it's certainly possible.</p></li> <li><p>Callbacks. Per jax's answer, the <code>Activity</code> registers a callback object ("observer") with the <code>Service</code>. The <code>Service</code> invokes a method on the callback when the data changes, which in turn updates the UI. You can see an example of using that with a <code>Service</code> <a href="http://github.com/commonsguy/cw-andtutorials/tree/master/18-LocalService/" rel="noreferrer">here</a>.</p></li> <li><p>Broadcast <code>Intents</code>. The <code>Service</code> broadcasts an <code>Intent</code> via <code>sendBroadcast()</code> on a data change. The <code>Activity</code> registers a <code>BroadcastReceiver</code> using <code>registerReceiver()</code>, and that <code>BroadcastReceiver</code> is notified of an incoming broadcast. This triggers the <code>Activity</code> to load the latest data from the <code>Service</code>, or possibly just to get the latest data out of extras in the broadcast <code>Intent</code>. You can see an example of using that technique with a <code>Service</code> <a href="https://github.com/commonsguy/cw-omnibus/tree/master/Internet/Download" rel="noreferrer">here</a>.</p></li> </ol>
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    1. POHow can I update information in an Android Activity from a background Service
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    1. COGreat example of number 3 here ... http://www.websmithing.com/2011/02/01/how-to-update-the-ui-in-an-android-activity-using-data-from-a-background-service/
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      1. USSteven Elliott
    2. COWhat if i closed the application. How can i handle the case of running AlarmManager with Status Activity.
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    3. COWhat are the pro and cons of techniques 2 and 3?
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      1. USL. G.
 

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