How to redirect audio to speakers in the AppRTC iOS example?

apprtcdemo, audio, avfoundation, ios, webrtc

Solution

I solved it by the solution. Just listen AVAudioSessionRouteChangeNotification

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didSessionRouteChange:) name:AVAudioSessionRouteChangeNotification object:nil];

And using the didSessionRouteChange selector as below:

- (void)didSessionRouteChange:(NSNotification *)notification
{
  NSDictionary *interuptionDict = notification.userInfo;
  NSInteger routeChangeReason = [[interuptionDict valueForKey:AVAudioSessionRouteChangeReasonKey] integerValue];

  switch (routeChangeReason) {
      case AVAudioSessionRouteChangeReasonCategoryChange: {
          // Set speaker as default route
          NSError* error;
          [[AVAudioSession sharedInstance] overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:&error];
      }
      break;

    default:
      break;
  }
}

Problem

I'm trying to redirect audio to speakers in the AppRTC iOS example. I tried: ``` AVAudioSession* session = [AVAudioSession sharedInstance]; //error handling BOOL success; NSError* error; //set the audioSession category. //Needs to be Record or PlayAndRecord to use audioRouteOverride: success = [session setCategory:AVAudioSessionCategoryPlayAndRecord error:&error]; if (!success) NSLog(@"AVAudioSession error setting category:%@",error); //set the audioSession override success = [session overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:&error]; if (!success) NSLog(@"AVAudioSession error overrideOutputAudioPort:%@",error); //activate the audio session success = [session setActive:YES error:&error]; if (!success) NSLog(@"AVAudioSession error activating: %@",error); else NSLog(@"audioSession active"); ``` There are no errors, but it doesn't work. How can I fix this?

Original source