[android-developers] Re: Getting a strange MessageQueue warning w/ DefaultHttpClient in AsyncTask

I can't imagine that Apache HttpClient would be doing anything with
Android handlers unless Google modified it to do so, unless maybe you
are using AndroidHttpClient.

Are you perhaps making any AsyncTask method calls inside some kind of
asynchronous callback from HttpClient? Care to share any code?

Doug

On Dec 24, 5:07 pm, Bret Foreman <bret.fore...@gmail.com> wrote:
> I'm doing a set of HTTP posts (using DefaultHttpClient), each in its
> own AsyncTask. Functionally, it works fine but I'm getting the warning
> below in the log. This warning appears for each instance of the
> AsyncTask. I'm guessing that the HTTP Client in posting a message (to
> itself?), then the task exits, then the message is undeliverable. Has
> anyone seen this behavior before or have an idea how I might prevent
> the warning?
>
> 12-24 16:45:30.669: WARN/MessageQueue(7888): Handler{448b0288} sending
> message to a Handler on a dead thread
> 12-24 16:45:30.669: WARN/MessageQueue(7888):
> java.lang.RuntimeException: Handler{448b0288} sending message to a
> Handler on a dead thread
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> android.os.MessageQueue.enqueueMessage(MessageQueue.java:179)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> android.os.Handler.sendMessageAtTime(Handler.java:457)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> android.os.Handler.sendMessageDelayed(Handler.java:430)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> android.os.Handler.sendMessage(Handler.java:367)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> android.os.Message.sendToTarget(Message.java:348)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> android.os.AsyncTask$3.done(AsyncTask.java:214)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> java.util.concurrent.FutureTask$Sync.innerSet(FutureTask.java:252)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> java.util.concurrent.FutureTask.set(FutureTask.java:112)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:310)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> java.util.concurrent.FutureTask.run(FutureTask.java:137)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:
> 1068)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> java.util.concurrent.ThreadPoolExecutor
> $Worker.run(ThreadPoolExecutor.java:561)
> 12-24 16:45:30.669: WARN/MessageQueue(7888):     at
> java.lang.Thread.run(Thread.java:1096)

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