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POHow to determine if an app is returning from a phone call or resuming from background?
 

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  1. POHow to determine if an app is returning from a phone call or resuming from background?
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    <p>I make phone call from my application using:</p> <p><code>[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"telprompt://XXXXXXXXXX"]];</code></p> <p>When the user ends the call, the default Apple-provided Phone app goes to the background and my application resumes focus. This happens automatically. </p> <p>Now here's what I want: <strong>I'd like to call a method every time (and only when) the user returns from a call.</strong></p> <p>I tried calling this method from <code>applicationWillEnterForeground:</code> or <code>applicationDidBecomeActive:</code> but these callbacks are fired at other times when the application is being launched from the background state(which I dont want). </p> <p>I'd like to determine if my application is being launched from the background state or if it is returning from a phone call so I can perform a certain task only in the former case and not latter. Any ideas?</p> <p>----EDIT----</p> <p>Here's how I finally did it:</p> <p>See: <a href="https://stackoverflow.com/questions/13553635/callstatedisconnected-only-detected-for-incoming-calls-not-for-calls-made-from?lq=1">CallStateDisconnected only detected for incoming calls, not for calls made from my app</a></p> <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { [self listenForCalls]; } - (void)listenForCalls { self.callCenter = [[CTCallCenter alloc] init]; self.callCenter.callEventHandler = ^(CTCall* myCall) { NSString *call = myCall.callState; if([call isEqualToString:CTCallStateDialing]) { //do ur stuff } }; } </code></pre>
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