iOS - Notification of when a call is taking place?
Is i开发者_开发知识库t 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?
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
.
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)
}
}
Look at AVAudioSessionDelegate protocol.
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
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