swift 播放声音

import AVFoundation

class ViewController: UIViewController {
var audioPlayer:AVAudioPlayer?

override func viewDidLoad() {
super.viewDidLoad()

let url = NSURL(fileURLWithPath:NSBundle.mainBundle().pathForResource("car", ofType:"mp3"))
audioPlayer = AVAudioPlayer(contentsOfURL:url, error:nil)
audioPlayer!.play()
}
}