Allow users background music in swift 2.0

问题

I am looking for some code to allow the user to play music from their phone while still using my app. Previously before swift 2.0 i would put this in the app delegate and it would work perfectly:

AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryAmbient, error: nil)
AVAudioSession.sharedInstance().setActive(true, error: nil)

Does anyone know how to implement this in swift 2.0?

回答1:

The following would be the syntax for Swift 2 calling setCategory and setActive on AVSession:

do
{
    try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryAmbient)
    try AVAudioSession.sharedInstance().setActive(true)
}
catch let error as NSError
{
    print(error)
}

OR

do
{
    try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
    try AVAudioSession.sharedInstance().setActive(true)
}
catch let error as NSError
{
    print(error)
}

来源：https://stackoverflow.com/questions/32673916/allow-users-background-music-in-swift-2-0