Thanks to you both for this information, it sounds like its exactly
what I was looking for. It is appreciated, thanks for your
contributions to the community. I'll pay back by posting results...
On May 12, 6:41 pm, Dianne Hackborn <hack...@android.com> wrote:
> The error means that this Message object has already been posted to a
> queue. It probably means that somewhere you are keeping a Message that you
> received from a Handler (the Handler owns the message and will recycle it
> when returning from your code), or otherwise cause a Message to get recycled
> that is also being posted into a Handler.
>
>
>
>
>
> On Tue, May 12, 2009 at 6:04 PM, radarcg <rada...@gmail.com> wrote:
>
> > Ok, I'm really struggling with what is likely a simple issue. All I
> > really want to do is have an activity spawn a thread to do a non-
> > trivial action (for now, just testing with sleep(5000) ). Then, when
> > that non-trivial action completes, the thread should notify the
> > activity, and the activity should present something visual, and
> > proceed. Simple enough right? I'm trying to use a Handler subclass to
> > which I send messages using sendMessage(). That handler subclass with
> > then notify the activity. It all seems to work actually, but then when
> > the thread completes, android is throwing an unhelpful exception:
>
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073): *** Uncaught remote
> > exception! (Exceptions are not yet supported across processes.)
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073):
> > android.util.AndroidRuntimeException: { what=1004 when=4149225
> > arg2=1 } This message is already in use.
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073): at
> > android.os.MessageQueue.enqueueMessage(MessageQueue.java:173)
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073): at
> > android.os.Handler.sendMessageAtTime(Handler.java:457)
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073): at
> > android.os.Handler.sendMessageDelayed(Handler.java:430)
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073): at
> > android.os.Handler.sendMessage(Handler.java:367)
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073): at
> > android.view.ViewRoot.windowFocusChanged(ViewRoot.java:2421)
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073): at
> > android.view.ViewRoot$W.windowFocusChanged(ViewRoot.java:2594)
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073): at android.view.IWindow
> > $Stub.onTransact(IWindow.java:166)
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073): at
> > android.os.Binder.execTransact(Binder.java:287)
> > 05-13 00:58:14.476: ERROR/JavaBinder(1073): at
> > dalvik.system.NativeStart.run(Native Method)
>
> > As a seasoned Java developer, running into trouble like this so early
> > in a new project is frustrating. However, I believe in Android and the
> > broader Google development platforms, so I'd really like to solve
> > this, but I think I need the communities help. Even just some sample
> > code (skeleton apps) that demo some best practices regarding the
> > threading (such as usage of HandlerThread and Looper) would be a big
> > help.
>
> > Thanks,
>
> > Charles
>
> --
> 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, 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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