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POUnhiding a view is very slow in CTCallCenter callEventHandler
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copied!<p>Reposting with more concise and focused question after original question went unanswered. Also adding more insight into the problem after another day of research:</p> <p>In my app delegate (<code>didFinishLaunching</code>), I set up a <code>callEventHandler</code> on <code>CTCallCenter</code>. The idea is that when a callState changes, I post a notification with a userInfo dict containing the <code>call.callState</code>. In my view, I observe this notification, and when the <code>userInfo</code> dict contains a value of <code>CTCallDisconnected</code>, I want to unhide a view.</p> <p>The problem I'm having is that the unhiding aspect is taking, almost consistenly, ~ 7 seconds. Everything else is working fine, and I know this because I <code>NSLog</code> before and after the unhiding, and those logs appear immediately, but the darned view still lags for 7 seconds.</p> <p>Here's my code:</p> <p>appDidFinishLaunching:</p> <pre><code>self.callCenter = [[CTCallCenter alloc] init]; self.callCenter.callEventHandler = ^(CTCall* call) { // anounce that we've had a state change in our call center NSDictionary *dict = [NSDictionary dictionaryWithObject:call.callState forKey:@"callState"]; [[NSNotificationCenter defaultCenter] postNotificationName:@"CTCallStateDidChange" object:self userInfo:dict]; }; </code></pre> <p>I then listen for this notification when a user taps a button that dials a phone number:</p> <pre><code>[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(ctCallStateDidChange:) name:@"CTCallStateDidChange" object:nil]; </code></pre> <p>Then, in ctCallStateDidChange:</p> <pre><code>- (void)ctCallStateDidChange:(NSNotification *)notification { NSLog(@"121"); NSString *callInfo = [[notification userInfo] objectForKey:@"callState"]; if ([callInfo isEqualToString:CTCallStateDisconnected]) { NSLog(@"before show"); [self.view viewWithTag:kNONEMERGENCYCALLSAVEDTOLOG_TAG].hidden = NO; NSLog(@"after show"); } } </code></pre> <p>I've tracked the problem down to the if condition in the above code sample:</p> <pre><code> if ([[userInfo valueForKey:@"userInfo"] valueForKey:@"callState"] == CTCallStateDisconnected) { </code></pre> <p>If I simply replace that with:</p> <pre><code>if (1 == 1) { </code></pre> <p>Then the view appears immediately!</p> <p>The thing is, those <code>NSLog</code> statements are logging immediately, but the view is lagging in it's unhiding. How could that condition cause only part of it's block to execute immediately, and the rest to wait ~ 7 seconds?</p> <p>Thanks!</p>

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