AVAudioPlayer via Speakers

Question

I got the following code:

- (id)init {
    if (self = [super init]) {
        UInt32 sessionCategory = kAudioSessionCategory_MediaPlayback;
        AudioSessionS         


        

Answer 1

It's picky about how you set it up...

[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty(kAudioSessionProperty_OverrideAudioRoute, sizeof(audioRouteOverride), &audioRouteOverride);

It's very important to use AVAudioSessionCategoryPlayAndRecord or the route will fail to go to the speaker. Once you've set the override route for the audio session, you can use an AVAudioPlayer instance and send some output to the speaker.

Hope that works for others like it did for me. The documentation on this is scattered, but the Skype app proves it's possible. Persevere, my friends! :)

Some Apple documentation here: http://developer.apple.com/library/ios/#documentation/AudioToolbox/Reference/AudioSessionServicesReference/Reference/reference.html

Do a search on the page for kAudioSessionProperty_OverrideAudioRoute

Answer 2

While the other answers do provide the desired effect of playing audio on the speaker instead of the receiver, they are not the idiomatic way to achieve that goal.

One should rather use the AVAudioSessionCategoryOption (what a mouthful) DefaultToSpeaker. The documentation for that reads (emphasis mine):

When using this option and no other audio route (such as a headset) is available, session audio will play through the device’s built-in speaker. When not using this option, and no other audio output is available or selected, audio will play through the receiver (a speaker intended to be held to the ear). Note that only iPhone devices are equipped with a receiver; on iPad and iPod touch devices, this option has no effect.

To use this, change your call to setCategory: to pass the option, like this:

let session = AVAudioSession.sharedInstance()
try session.setCategory(AVAudioSessionCategoryPlayAndRecord, withOptions: [.DefaultToSpeaker])

Answer 3

For iOS7 AudioSessionSetProperty is deprecated. The answer in the following post by foundry shows how to do this for iOS7:

https://stackoverflow.com/a/18808124/1949877

Answer 4

Try this:

NSError *error;
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:&error];    
if(error) { 
    NSLog(@"STKAudioManager: AudioSession cannot use speakers");
}

Answer 5

You're code for playing the sound looks correct, and there's no reason you should have to use AudioToolbox. One thing you might want to make sure of is that you are using supported audio formats. (I personally have had success with MP3 and WAV)

Also, could you share with us your code as to how you get the url to your sound file?

Answer 6

Very good example here http://ruckt.info/playing-sound-through-iphone-speaker/ Solved my problem.

The method below - configureAVAudioSession - reroutes the audio to the main speakers in iOS 7.0. To do so, call it before playing the audio in this way: [self configureAVAudioSession].

- (void) configureAVAudioSession //To play through main iPhone Speakers
{
    //get your app's audioSession singleton object
    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");
    }
}