Re: [android-developers] How is 'onHandleIntent' handled in an IntentService

24.03.2012 16:45, Put_tiMe пишет:
> Will they be invoked one after the other, in the order they were raised.

As Mark already said, yes, it's sequential.

If you look at the implementation:

https://github.com/android/platform_frameworks_base/blob/master/core/java/android/app/IntentService.java

... it's really simple, and uses HandlerThread, which is a small helper
class that creates a thread which sits in a loop processing messages one
by one.

> Is there any chance that 'onHandleIntent' will be called in parallel,
> to handle more than one intent simultaneously.

If that's what you want, you could very easily implement this:

- Either by using ThreadPoolExecutor:

http://developer.android.com/reference/java/util/concurrent/ThreadPoolExecutor.html

- Or by using AsyncTask.

Note that starting with Android 4.0 you'd need to use
task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR) if parallel
execution is desired.

- Or in some other way....

The important thing (besides posting work to another thread or a pool of
threads) is to manage the service's lifetime by calling
stopSelf(startId), where startId is the value from the service's
onStrartCommand that corresponds to the Intent you just finished processing.

--
Kostya Vasilyev

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