[android-beginners] Re: onHandleIntent(Intent) method does not get called
Hi -- Okay, I got further! Yay! It turns out that I also had to call super.onCreate() to avoid the null pointer exception. So, if I call super.onCreate() and super.onStartCommand(), my onHandleIntent() does get excecuted. Now, my new mystery is why my service gets an onDestroy() call right after it is started. I return START_STICKY from onStartCommand, but that does not seem to have an effect. I guess I need to understand the life cycle stuff a little more. On Jun 23, 9:05 pm, appsgrrl bettyoch...@gmail.com wrote: Hi -- You know, that was one of the first things I had thought of, so I put a call to super.onHandleIntent() in my class code. However, I got a NullPointerException from IntentService.onStart(), which is called from IntentService.onStartCommand(), which is from my class's onStartCommand() I tried it again, and played with the arguments to no avail. I assume that I use my incoming arguments and pass them to the super.onStartCommand(), correct? Thanks again for your help On Jun 23, 7:47 am, Mark Murphy mmur...@commonsware.com wrote: On Wed, Jun 23, 2010 at 10:37 AM, appsgrrl bettyoch...@gmail.com wrote: Thanks for replying. I also have a logging printout in the onStartCommand() method, and that does show as being called. If onStartCommand() is called, doesn't that mean my startService() from my Activity has indeed started my IntentService? Yes. However, be sure you are chaining to the superclass in onStartCommand() -- otherwise, you will block IntentService from dispatching your Intent to onHandleIntent() via the background thread. Who ultimately calls onHandleIntent()? IntentService does. -- Mark Murphy (a Commons Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy _The Busy Coder's Guide to *Advanced* Android Development_ Version 1.6 Available! -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
Re: [android-beginners] Re: onHandleIntent(Intent) method does not get called
24.06.2010 10:49, appsgrrl пишет: Hi -- Okay, I got further! Yay! It turns out that I also had to call super.onCreate() to avoid the null pointer exception. So, if I call super.onCreate() and super.onStartCommand(), my onHandleIntent() does get excecuted. Great. Both superclass methods need to get called - onCreate() set up a worker thread, and onStartCommand() queues the intent to this thread, which ultimately calls your onHandleIntent() Now, my new mystery is why my service gets an onDestroy() call right after it is started. I return START_STICKY from onStartCommand, but that does not seem to have an effect. I guess I need to understand the life cycle stuff a little more. This is intended behaviour. The service is stopped when the last queued intent has been processed by your subclass's onHandleIntent(). -- Kostya Vasilev -- WiFi Manager + pretty widget -- http://kmansoft.wordpress.com -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: onHandleIntent(Intent) method does not get called
Hi -- Thanks for replying. I also have a logging printout in the onStartCommand() method, and that does show as being called. If onStartCommand() is called, doesn't that mean my startService() from my Activity has indeed started my IntentService? Who ultimately calls onHandleIntent()? That's what I cannot figure out from the docs. Betty On Jun 23, 4:02 am, Mark Murphy mmur...@commonsware.com wrote: On Wed, Jun 23, 2010 at 1:03 AM, appsgrrl bettyoch...@gmail.com wrote: I'm tryng to get an IntentService to work, and I have extended IntentService, and I implemented a onHandletIntent(Intent) method. I put some logging in there, but this method never gets called. I must be doing something really dumb, but I don't know what it is. Is there something else I need to implement or override, or whatever, to make this work? No, that's pretty much it. Are you sure whatever is supposed to be calling startService() is actually calling startService()? -- Mark Murphy (a Commons Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy _The Busy Coder's Guide to *Advanced* Android Development_ Version 1.6 Available! -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
Re: [android-beginners] Re: onHandleIntent(Intent) method does not get called
On Wed, Jun 23, 2010 at 10:37 AM, appsgrrl bettyoch...@gmail.com wrote: Thanks for replying. I also have a logging printout in the onStartCommand() method, and that does show as being called. If onStartCommand() is called, doesn't that mean my startService() from my Activity has indeed started my IntentService? Yes. However, be sure you are chaining to the superclass in onStartCommand() -- otherwise, you will block IntentService from dispatching your Intent to onHandleIntent() via the background thread. Who ultimately calls onHandleIntent()? IntentService does. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy _The Busy Coder's Guide to *Advanced* Android Development_ Version 1.6 Available! -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
Re: [android-beginners] Re: onHandleIntent(Intent) method does not get called
Betty,
Make sure your service calls base class methods in onCreate() and
onStart(). Intents for processing are queued to a worker thread by
IntentService.onStart. The worker thread is set up by onCreate.
class BettysService extends IntentService {
@Override
public void onCreate() {
... logging here ...
super.onCreate();
}
@Override
public void onStart(Intent intent, int startId) {
... logging here...
super.onStart(intent, startId);
}
.
}
BTW, Android source can be found here:
http://www.netmite.com/android/mydroid/1.6/frameworks/base/core/java/android/app/
-- Kostya
23.06.2010 18:37, appsgrrl пишет:
Hi --
Thanks for replying. I also have a logging printout in the
onStartCommand() method, and that does show as being called.
If onStartCommand() is called, doesn't that mean my startService()
from my Activity has indeed started my IntentService?
Who ultimately calls onHandleIntent()? That's what I cannot figure
out from the docs.
Betty
On Jun 23, 4:02 am, Mark Murphymmur...@commonsware.com wrote:
On Wed, Jun 23, 2010 at 1:03 AM, appsgrrlbettyoch...@gmail.com wrote:
I'm tryng to get an IntentService to work, and I have extended
IntentService, and I implemented a onHandletIntent(Intent) method. I
put some logging in there, but this method never gets called.
I must be doing something really dumb, but I don't know what it is.
Is there something else I need to implement or override, or whatever,
to make this work?
No, that's pretty much it. Are you sure whatever is supposed to be
calling startService() is actually calling startService()?
--
Mark Murphy (a Commons
Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy
_The Busy Coder's Guide to *Advanced* Android Development_
Version 1.6 Available!
--
Kostya Vasilev -- WiFi Manager + pretty widget -- http://kmansoft.wordpress.com
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
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[android-beginners] Re: onHandleIntent(Intent) method does not get called
Hi -- You know, that was one of the first things I had thought of, so I put a call to super.onHandleIntent() in my class code. However, I got a NullPointerException from IntentService.onStart(), which is called from IntentService.onStartCommand(), which is from my class's onStartCommand() I tried it again, and played with the arguments to no avail. I assume that I use my incoming arguments and pass them to the super.onStartCommand(), correct? Thanks again for your help On Jun 23, 7:47 am, Mark Murphy mmur...@commonsware.com wrote: On Wed, Jun 23, 2010 at 10:37 AM, appsgrrl bettyoch...@gmail.com wrote: Thanks for replying. I also have a logging printout in the onStartCommand() method, and that does show as being called. If onStartCommand() is called, doesn't that mean my startService() from my Activity has indeed started my IntentService? Yes. However, be sure you are chaining to the superclass in onStartCommand() -- otherwise, you will block IntentService from dispatching your Intent to onHandleIntent() via the background thread. Who ultimately calls onHandleIntent()? IntentService does. -- Mark Murphy (a Commons Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy _The Busy Coder's Guide to *Advanced* Android Development_ Version 1.6 Available! -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
