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    <blockquote> <p>My cycle above needs to perform those 8 steps in that exact order so IntentService would be the ideal solution.</p> </blockquote> <p>Not really. <code>IntentService</code> is designed for transactional sorts of work: do a few seconds, or maybe minutes, of work, then go away. Your need is for something that will run more indefinitely.</p> <blockquote> <p>can I create an IntentService that is completely independent from the Main Activity/UI thread so that it does not rely on the Main Activity's lifecycle or thread?</p> </blockquote> <p>An <code>IntentService</code> usually has very little to do with your process' main application thread.</p> <p>A better solution would be a regular <code>Service</code>. Use a standard Java <code>ScheduledExecutorService</code> to handle the timing of the events and triggering their work on a background thread. Start that work in <code>onStartCommand()</code> of the service, triggered by a <code>startService()</code> call from your activity. Stop that work in <code>onDestroy()</code> of your service, triggered by a <code>stopService()</code> call from your activity. In between <code>startService()</code> and <code>stopService()</code>, your service will run... for a while, at least.</p> <p>Even better, if your polling period were longer, would be to use <code>AlarmManager</code> and have it give you control at this event points in time. That way, your <code>Service</code> would not be clogging up memory all of the time. As it stands, users will be prone to task-kill your app, if they do not value your service.</p>
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    1. POAndroid Java Service and Timer/Thread Sleep
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    1. COThe time ranges from 60 seconds up to 24 hours- so I guess I'll use the Service to execute the AlarmManager and free up memory. My second question is when the Home Button is pressed, does the activity receive the onPause() only or onPause() + onStop() or onPause() + onStop() + onDestroy()? Because I want to make sure that the activity does not get destroyed, if it does, I won't be able to stop the service as the service ID in the Variable will be lost? Right?
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    2. CO@GBA: "so I guess I'll use the Service to execute the AlarmManager and free up memory" -- it is more that you will use `AlarmManager` to execute a `Service`. If you expect these events to occur while the device is asleep, you may need my `WakefulIntentService` or the equivalent: https://github.com/commonsguy/cwac-wakeful "Because I want to make sure that the activity does not get destroyed" -- your activity will not live forever. "I won't be able to stop the service as the service ID in the Variable will be lost?" -- services do not have IDs.
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    3. COWill alarm manager still execute the service after the main activity had received onPause or onStop? - that is to say, activity is now in background because user pressed Start and minimised the app to continue with his other tasks or return to the home screen to lock the phone.
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