>> If you have lots of work to do, do it in a background thread.
Thanks, I thought I running on a different thread by calling the
service from a background thread. Have I done this incorrectly or
should I not be using the context object?
public void openInitialThread() {
Thread updateThread = new Thread(null, backgroundRefresh2,
"new_thread");
updateThread.start();
}
private Runnable backgroundRefresh2 = new Runnable() {
public void run() {
ComponentName service=_context.startService(new Intent
(_context,InitialContentService.class));
}
};
On Mar 13, 12:56 pm, Dianne Hackborn <hack...@android.com> wrote:
> Um... it sounds like you are just doing a lot of work in the main thread,
> and getting an ANR dialog. Don't do that. :) If you have lots of work to
> do, do it in a background thread. All Service callbacks happen on the main
> thread.
>
>
>
> On Fri, Mar 13, 2009 at 11:16 AM, Bob <bshumsk...@yahoo.com> wrote:
>
> > Thanks, I'll look more at the logs for crash issue. But regardless of
> > the crash, am I correct in thinking that if I call a service it should
> > do its processing in the background and the main UI thread should
> > immediately update? For this does it matter whether I start the
> > service from a background thread or not? The crash doesn't occur for
> > a while into the processing but in the mean time my UI is not
> > progressing.
>
> > On Mar 13, 11:03 am, Dianne Hackborn <hack...@android.com> wrote:
> > > At the very least, you should include (and look at!) the stack crawl of
> > the
> > > crash. That will usually tell you all you need to know about why it
> > > crashed. The stack crawl is in the log.
>
> > > On Fri, Mar 13, 2009 at 9:39 AM, Bob <bshumsk...@yahoo.com> wrote:
>
> > > > Thanks for your quick response. It doesn't access or modify any
> > > > views. It accesses the context to read in some raw resources and
> > > > writes to the sqllite database also via context.
>
> > > > On Mar 13, 9:32 am, Streets Of Boston <flyingdutc...@gmail.com> wrote:
> > > > > Hi Bob,
>
> > > > > Your code snippet is not enough to give you some more info.
> > > > > E.g. how does backgroundRefresh2 looks like (it public void run()
> > > > > implementation).
>
> > > > > Based on its name 'backgroundRefresh2': does it access View-s and
> > > > > modify these view (e.g. update text-view, images, etc.)?
> > > > > If so, that may explain your crash. You should not access any View
> > (or
> > > > > subclass of View) in any other thread than your main message-
> > > > > dispatching thread (i.e. the thread on which your onCreate/onDestroy/
> > > > > onPause/onResume/on<anything> is called).
>
> > > > > On Mar 13, 11:05 am, Bob <bshumsk...@yahoo.com> wrote:
>
> > > > > > Hi,
> > > > > > I have moved some intensive processing from my main thread to a
> > > > > > service. My UI is hanging and then crashing when I start the
> > service,
> > > > > > even if I put the service start in a new thread started via
>
> > > > > > Thread updateThread = new Thread(null, backgroundRefresh2,
> > > > > > "new_thread");
> > > > > > updateThread.start();
>
> > > > > > What am I doing wrong? Also, it seems like the cause of the
> > eventual
> > > > > > crash in the service/worker thread doesn't show up in LogCat.
>
> > > > > > Thanks,
> > > > > > Bob
>
> > > --
> > > Dianne Hackborn
> > > Android framework engineer
> > > hack...@android.com
>
> > > Note: please don't send private questions to me, as I don't have time to
> > > provide private support. All such questions should be posted on public
> > > forums, where I and others can see and answer them.
>
> --
> Dianne Hackborn
> Android framework engineer
> hack...@android.com
>
> Note: please don't send private questions to me, as I don't have time to
> provide private support. All such questions should be posted on public
> forums, where I and others can see and answer them.
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