CODEWITHSUNDEEP
objective-ciosnotifications
Donal Rafferty
Donal Rafferty

Reputation: 19826

iOS - Notification of when a call is taking place?

Is it possible to be notified or detect when a GSM/CDMA call is taking place on an iOS handset?

I have an application that uses audio in the background and I want to be able to detect when a call is taking place so that my app can react accordingly so as not to intrude on the cellular call in anyway.

Essentially I want to be able to detect when a call is taking place so that if the user enters my application while on a call I can disable some functionality.

So I was wondering how I can detect that a cellular call is taking place on a device?

Upvotes: 4

Views: 10824

Answers (4)

prewett
prewett

Reputation: 1647

As of iOS 6, you should:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onAudioInterruption:) name:AVAudioSessionInterruptionNotification object:session

and then:

- (void)onAudioInterruption:(NSNotification*)notification
{
    NSDictionary *info = notification.userInfo;
    NSUInteger type = [[info valueForKey:AVAudioSessionInterruptionTypeKey] unsignedIntegerValue];

    if (type == AVAudioSessionInterruptionTypeBegan) {
        // stop audio (or whatever)
    } else if (type == AVAudioSessionInterruptionTypeEnded) {
        // restart audio (or whatever)
    }
}

Upvotes: 2

riven
riven

Reputation: 1516

You can use CoreTelephony framework.But you must user some private api.And I have some demo code for this. https://github.com/edison0951/AppNotifyBySMSDemo. And the finally solution is MAP.this is the same with SMS notifications in iOS6

Upvotes: 0

Noah Witherspoon
Noah Witherspoon

Reputation: 57149

As of iOS 4, you can use the CTCallCenter class in the Core Telephony framework to register an event handler so your app gets notified when a call starts or ends. The CTCall it gives you has a callState property, which can be CTCallStateDialing, CTCallStateIncoming, CTCallStateConnected, or—when it ends—CTCallStateDisconnected.

Upvotes: 9

MarrLiss
MarrLiss

Reputation: 808

Look at AVAudioSessionDelegate protocol.

Upvotes: 1

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