Android - Having a service run every day at 4AM

I would like to know the best practices for running a Service every day at 4AM.

The way I think I should be doing it is to create a new repeating alarm using AlarmManager and having it run the service 开发者_如何学Cat 4AM. Problem is, I'm not sure where to put the code to set the alarm.

Do I do it in my main activity as one of the first tasks in the OnCreate method? Do I do some funky stuff with BroadcastReceivers and intents? What happens when a user updates my app? What happens when a user restarts?

Any help with these questions would be much appreciated :) Sample code would be helpful as well!

Bara

You can schedule your alarm each time phone boots and each time your application starts. To listen to phone boot event you can use BroadcastReceiver.

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
.
.
.
<receiver android:name=".BootReceiver">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
    </intent-filter>
</receiver>

For a complete sample you can take a look at Photostream application http://code.google.com/p/apps-for-android. It uses exactly the same approach.