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2012-08-30T17:03:08.567
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You are on the right track. And the application delegate is a great place for a socket connection. I think you're being tripped up by something relatively simple. <code>[[UIApplication sharedApplication] delegate]</code> returns an <code>id</code> or generic object pointer to an object that conforms to the <code><UIApplicationDelegate></code> protocol. So code completion has no way of knowing that your application's delegate is an instance of your <code>AppDelegate</code> class. Remember if you are in fact using an instance of <code>AppDelegate</code> to be your application's delegate then <code>[[UIApplication sharedApplication] delegate]</code> will return a pointer to your delegate, but it will be the generic pointer discussed above. The simplest solution is to cast the pointer you receive back from <code>[[UIApplication sharedApplication] delegate]</code> to be a pointer of <code>AppDelegate</code> type. For example: <pre><code>AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; // We now have a pointer to your app delegate that the compiler knows is an AppDelegate. // So code completion will work and it will compile. GCDAsyncSocket *socket = [myAppDelegate asyncSocket]; </code></pre> Or you can stack the calls to one statement. The syntax looks a little funky, but this is how it's done. <pre><code>GCDAsyncSocket *socket = [(AppDelegate *)[[UIApplication sharedApplication] delegate] asyncSocket]; </code></pre>
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1. POHow do I make GCDAsyncSocket that is declared in AppDelegate available to view controllers
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