UIAlertView:wait_fences: failed to receive reply: 10004003

Question

I have already running UIAlertView, But during Getting data from Webservice i want to update Message of that AlertView. So I write below Code to update message of alert:

[self performSelectorOnMainThread:@selector(UpdateAlertMessage:) withObject:@"Downloading Schedule ..." waitUntilDone:NO];

-(void)UpdateAlertMessage:(NSString *)strMessage
{appDelegate.progressAlert.message=strMessage;
}

Here progress alert is my already running alertview.

But I give me below warning in Console:

wait_fences: failed to receive reply: 10004003

I want to remove that warning. Any Help??

Where you're calling this method ??? in `viewWillAppear:` ??? — TheTiger, Apr 10 '13 at 07:22
i am calling this method during XML Parsing data i.e. - (void)elementFound:(const xmlChar *)localname prefix:(const xmlChar *)prefix uri:(const xmlChar *)URI namespaceCount:(int)namespaceCount — Divya Jain, Apr 10 '13 at 07:23
It is because there are two threads and you are trying to call the main thread and the main thread in turn calls another thread. — Satheesh, Apr 10 '13 at 07:24
Possible duplicate: http://stackoverflow.com/questions/1371346/wait-fences-failed-to-receive-reply-10004003 — Satheesh, Apr 10 '13 at 07:25
@TheTiger I tried with waitUntilDone:YES also but it give me still same warning. — Divya Jain, Apr 10 '13 at 07:26
@satheeshwaran Might be duplicacy here any other way to update alertview message during XML Parsing?? — Divya Jain, Apr 10 '13 at 07:27
Can you try http://stackoverflow.com/questions/5193108/uialertview-wait-fences-failed-to-receive-reply-10004003?rq=1 — Satheesh, Apr 10 '13 at 07:49

βhargavḯ · Answer 1 · 2013-04-10T08:37:03.387

0

You are doing it on Main thread so try to use GCD method instead of [self performSelectorOnMainThread:@selector(UpdateAlertMessage:) withObject:@"Downloading Schedule ..." waitUntilDone:NO];

like this

dispatch_async(dispatch_get_main_queue(), ^{ 
  [self UpdateAlertMessage:@"Downloading Schedule ..."];
});

UPDATE

dispatch_queue_t myQueue;
myQueue = dispatch_queue_create("myQueue", NULL);
dispatch_sync(myQueue, ^{
    [self UpdateAlertMessage:@"Downloading Schedule ..."];
});

edited Apr 10 '13 at 08:37

answered Apr 10 '13 at 07:27

βhargavḯ

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I also try this but still it give same warning during running in iPad i.e. wait_fences: failed to receive reply: 10004003 – Divya Jain Apr 10 '13 at 07:41
@Divya jain Please try updated answer. Try to create own queue and test – βhargavḯ Apr 10 '13 at 08:37
I tried with your updated answer and tested in iPad. But whenever that queue is executing still it give same warning. Did this warning crash the app?? or May I continue with this warning?? – Divya Jain Apr 12 '13 at 06:12
it is same : wait_fences: failed to receive reply: 10004003 – Divya Jain Apr 12 '13 at 07:17
There must be something going in iterative loop. – βhargavḯ Apr 12 '13 at 07:19

UIAlertView:wait_fences: failed to receive reply: 10004003

1 Answers1