iOS,简单播放器

1.简单播放/停止功能

import AVFoundation
class ViewController: UIViewController, AVAudioPlayerDelegate {
var audioPlayer: AVAudioPlayer?
var timer: NSTimer?

@IBOutlet weak var progress: UIProgressView!

@IBAction func player(sender: UIButton) {
    let url = NSBundle.mainBundle().URLForResource("断点", withExtension: "mp3")
    do {
        try audioPlayer = AVAudioPlayer(contentsOfURL: url!)

// audioPlayer?.enableRate = true
// audioPlayer?.rate = 10
audioPlayer?.prepareToPlay()
audioPlayer?.play()
print(audioPlayer?.duration)
audioPlayer?.delegate = self

    }
    catch let error as NSError {
        print(error.code, error.localizedDescription)
    }
    
    timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: #selector(didTime(_:)), userInfo: nil, repeats: true)
    
    }
@IBAction func stop(sender: UIButton) {
    audioPlayer?.pause()
    timer?.invalidate()
}
    func didTime(timer: NSTimer) {
        print("\(audioPlayer?.currentTime)s")
        print("\((audioPlayer?.currentTime)! / (audioPlayer?.duration)!)")
        progress.progress = Float((audioPlayer?.currentTime)! / (audioPlayer?.duration)!)
    
    }
    func audioPlayerDidFinishPlaying(player: AVAudioPlayer, successfully flag: Bool) {
        print("播放完成")
    }

}