This simple module routes audio depending on device availability using the following priorities: bluetooth, wired headset, speaker.

It also notifies interested listeners of audio change events (optional).

The only requirement to use this module is an ARC-based iOS 6+ project.

AudioSessionManager is a singleton which can be initialized with a single statement:

// Initialize the audio session...
[[AudioSessionManager sharedInstance] startAndPostNotifications:YES];

Two notifications are posted by this library if enabled:

• kAudioSessionManagerDevicesAvailableChangedNotification - the list of devices (returned by the availableAudioDevices property) has changed
• kAudioSessionManagerAudioDeviceChangedNotification - the current audio device (returned by the audioDevice property) has changed

NSLog(@"audioRoute is %@", [AudioSessionManager sharedInstance].audioRoute);

Configuring the device for input:

if (![[AudioSessionManager sharedInstance] changeMode:kAudioSessionManagerMode_Record]) {
    // .... handle error ...
}

and output:

if (![[AudioSessionManager sharedInstance] changeMode:kAudioSessionManagerMode_Playback]) {
    // .... handle error ...
}