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 <[email protected]> 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 [email protected] 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. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
