dispatch_async block on main queue is never execeuted

Question

I have an app that uses a connection queue that handles the connections on a background thread. Each connection sends a JSON post, then when it receives a success, saves some o

Answer 1

If your main thread is busy with modal runloop, then you could try

CFRunLoopPerformBlock(CFRunLoopGetMain(), kCFRunLoopCommonModes, block
    });