iOS, NSURLConnection: Delegate Callbacks on Different Thread?

Question

How can I get NSURLConnection to call it\'s delegate methods from a different thread instead of the main thread. I\'m trying to mess around with the scheduleInRunLoop:forMod

Answer 1

There are several options:

1. In your implementation of the delegate methods, make use of dispatch_async.
2. Start the schedule the connection on a background thread.

You can do the latter like this:

// all the setup comes here
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
    NSRunLoop *loop = [NSRunLoop currentRunLoop];
    [connection scheduleInRunLoop:loop forMode:NSRunLoopCommonModes];
    [loop run]; // make sure that you have a running run-loop.
});

If you want a guarantee on which thread you're running, replace the call to dispatch_get_global_queue() appropriately.