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POwhile loop can't exit without NSLog
 

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  1. POwhile loop can't exit without NSLog
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    <p>I am trying to create a login page that displays a waiting page while attempting. it has an <code>UIActivityIndicatorView</code> runs on main thread and another thread doing the connection. The code works fine when I uncomment <code>NSLog</code>, but it keeps running when I comment it out. Can anyone explain to me why it doesn't exist the while loop when there is no <code>NSLog</code>? it is a bit complicated. I have a control class that prepare the <code>websocket</code> command and fires it if and only if the <code>websocket</code> is successfully connected. </p> <p>The action flow is like this: </p> <p><code>LoginButton</code> is clicked -> <code>rootView</code> calls <code>[_spinner startAnimating];</code> -> attempting connecting to <code>websocket</code> -> send log in command when successfully connected.</p> <p><code>rootView</code> has to animate the spinner and wait for the response.</p> <pre><code> [_spinner startAnimating]; [NSThread detachNewThreadSelector:@selector(attampingWS) toTarget:self withObject:nil]; - (void) attampingWS { while ([connection isAttamptingWS] &amp;&amp; ![connection isConnectedToWebSocket]) { /** waiting until it's done **/ // NSLog(@"?"); } if ([connection isConnectedToWebSocket]) { [self proceedLogin]; [_spinner performSelectorOnMainThread:@selector(stopAnimating) withObject:nil waitUntilDone:NO]; } } </code></pre> <p>in connection class: </p> <pre><code> @property(nonatomic) NSTimer *attampConnectionTimeOut; @property(nonatomic) NSTimer *attampConnection; @property BOOL isConnectedToWebSocket; - (BOOL) isAttamptingWS { return [_attampConnection isValid]; } - (BOOL) isWaitingForResponse { return [_waitingForResponse isValid]; } /** this method is redirected from websocket by using delegation **/ - (void)dbConnectionDidConnected:(websocket *)connection { [self _terminateAttamptingConnection]; [self setIsConnectedToWebSocket:TRUE]; } </code></pre>
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    1. USJonatWang
    1. USJonatWang
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    1. COthats interesting ....waiting for the answer.. :)
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      1. USPrashant Nikam
    2. COWhat happens when the connection succeeds/is cancelled? Does the same `connection` object return different values, or does it get replaced by a new object which returns the different values?
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    3. COWhy not just give the `connection` object a block that it executes whenever it has connected (or not) to the socket?
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      1. USDave DeLong
 

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