Swift: how to set up an audio session that gracefully mixes with others (aka Pod)

问题

This code snippet makes the other audio (aka iPod) to stop:

func setSessionPlayer() {

    var audioSessionError: NSError?
    let audioSession = AVAudioSession.sharedInstance()

    audioSession.setActive(true, error: nil)

    if audioSession.setCategory(AVAudioSessionCategoryPlayback, withOptions:AVAudioSessionCategoryOptions.MixWithOthers,
        error: &audioSessionError) {
            println("Successfully set the audio session")
    } else {
        println("Could not set the audio session")
    }

}

What am I missing?

回答1:

I think it's because you're setting the audioSession.active before it's configured to MixWithOthers. Move audioSession.setActive below the if block like so:

if audioSession.setCategory(AVAudioSessionCategoryPlayback, withOptions:AVAudioSessionCategoryOptions.MixWithOthers,
    error: &audioSessionError) {
        println("Successfully set the audio session")
} else {
    println("Could not set the audio session")
}

audioSession.setActive(true, error: nil)

来源：https://stackoverflow.com/questions/26655402/swift-how-to-set-up-an-audio-session-that-gracefully-mixes-with-others-aka-pod