You should definitely find out what device this is happening on.

On Fri, Jun 22, 2012 at 4:06 AM, String <[email protected]>wrote:

> I'm getting a steady trickle of reports from ICS users that two separate
> app features are not working reliably on their devices, and I'm hoping
> someone else here has some experience they can share. Both features involve
> Alarms; both are working fine on my Galaxy Nexus, and I've had no reports
> of trouble with either from pre-ICS devices.
>
> The app in question is a clock, and the first feature is a true alarm. As
> in, the user wants to wake up at 7AM, sets an alarm in my app, and behind
> the scenes my app calls AlarmManager.set() with an appropriate
> PendingIntent. Works fine on my GNex, but from users, I get reports like
> this:
>
> the alarm doesn't ring on time unless I'm actively using my phone. That
>> kind of defeats the purpose of an alarm. The alarm that I set is for
>> 10pm and on multiple occasions, it rang at 10:03, 10:07, or even later. On
>> those occasions, I actually had to "remind" the alarm to ring by
>> clicking around on my homescreen.
>
>
> The second feature is a clock AppWidget which works via a repeating Alarm;
> basically, I set up a PendingIntent in my widget's onEnabled() event, then
> call AlarmManager.SetRepeating() to fire it every minute. The user reports
> say that it runs for a while, and then stops - but again, I can't repro
> this at all.
>
> Unfortunately, that's about all the information I have. I've been unable
> to get a useful log file from anyone for either problem. And it's possible
> that these two problems are unrelated, but it seems like quite a
> coincidence if so. From where I'm sitting, it sure looks like a single
> problem: sometimes the Alarm intent just doesn't arrive.
>
> I can post source code if anyone thinks it would help, but I'm not
> convinced there's anything "wrong" in my code. My alarm code is actually
> based on the AOSP clock app, and I've just confirmed that the alarm-setting
> routine in the ICS source is identical to my code. As for the widgets, I
> have another app using clock widgets and virtually the same code, and I've
> had no problems reported with that one.
>
> So, it's a real head-scratcher, but I'd be interested in any thoughts that
> anyone might have. Thanks!
>
> String
>
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-- 
Dianne Hackborn
Android framework engineer
[email protected]

Note: please don't send private questions to me, as I don't have time to
provide private support, and so won't reply to such e-mails.  All such
questions should be posted on public forums, where I and others can see and
answer them.

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