What is the right way to get updates from REST service by timer in Android? [closed]

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I wonder what is the right way to get updates from REST service by timer in Android?

May be I should use timer task for this?

UPDATE: I need to receive updates even if user has switched to another application or receive a call. UI also should be updated. So when user switch back to the application he should see updated view.

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Here is an example that might help:

Timer timer = new Timer();

timer.scheduleAtFixedRate(new TimerTask(){ public void run()
        {onTimerTick();}}, 0, 1000L);

private onTimerTick_()
{
 // do REST call

}

You will want to make sure this is in a seperate thread.

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'The right' way depends on what you are trying to do. Update your GUI? Update a datastore in the background while the app is not visible? AlarmManager lets you fire off a service to get data even if your app is not currently running, unlike TimerTask, so it's better for the second case.