Ne0 wrote:
> Can you confirm if i am using WakeLock in the correct way please.
>
> //My Service
> public void onCreate() {
> ...
> mPm = (PowerManager) getSystemService
> (Context.POWER_SERVICE);
> mWl = mPm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MGS");
> mWl.acquire();
> ...
> }
>
> public void onDestroy() {
> ...
> mWl.release();
> ...
> }
Assuming mWl is the same instance in onDestroy() as you got in
onCreate(), that sure looks OK. You can test it by forking a thread to
dump a message to LogCat every second and then SystemClock.sleep()-ing
the rest of the second. If you get the LogCat messages, you know your
service is still running.
You can see a more elaborate example of WakeLocks and services in one of
my book examples:
http://commonsware.com/AdvAndroid/
(click the Source Code link, and look at SystemServices/Alarm)
That is more simulating work coming in from multiple sources, including
a boot-time-scheduled alarm, into an IntentService, and the
IntentService having to do a bit of work to ensure it stays awake while
there is work to do.
> The intention is to keep the CPU going so my service can log when a
> location change happens, works as i want while the phone is fully
> awake, though even with the above WakeLock it stops logging the
> changes.
That may be a matter of the GPS radio turning off despite the WakeLock.
Do you have any evidence that GPS is still on?
I don't know much about that, except that keeping the GPS radio on means
very short battery life.
--
Mark Murphy (a Commons Guy)
http://commonsware.com | http://twitter.com/commonsguy
Android Development Wiki: http://wiki.andmob.org
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