iOS play audio through iPhone receiver (phone speaker) - ios

Question

I am currently working on an application which should play Audio files through the iPhone receiver. I know it was easily possible before iOS 6/7, but those methods are deprecated now.
So does anybody know how it works on iOS 7?
This is my code, which does not work:
_audioSession = [AVAudioSession sharedInstance];
[_audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[_audioSession overrideOutputAudioPort:AVAudioSessionPortBuiltInReceiver error:nil];
NSString *ringtone = [[NSUserDefaults standardUserDefaults] stringForKey:#"ringtone"];
ringtone = [ringtone stringByReplacingOccurrencesOfString:#".m4r" withString:#""];
NSString *path;
path = [[NSBundle mainBundle] pathForResource:#"abto_ringbacktone" ofType:#"wav"];
NSError *error;
_player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL URLWithString:path] error:&error];
if (error) {
NSLog(#"Error: %#",error.localizedDescription);
}
}
[_player setNumberOfLoops:10];
[_player prepareToPlay];
[_player play];
[_player setVolume:0.1];

Answer 1

You cannot pass AVAudioSessionPortBuiltInReceiver to the overrideOutputAudioPort:error: because it takes enum as an argument, not a string.
Correct way to do this is to configure session as follows for Receiver:
[_audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[_audioSession overrideOutputAudioPort:AVAudioSessionPortOverrideNone error:nil];
and for Speaker:
[_audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[_audioSession overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:nil];