ios开发——实用技术篇Swift篇&播放MP3

播放MP3

 

  1     // MARK: - 播放MP3

  2     /*----- mp3 ------*/

  3     //定时器-

  4     func updateTime()

  5     {

  6         //获取音频播放器播放的进度，单位秒

  7         var cuTime:Float = Float(audioPlayer.currentTime)

  8         

  9         //更新进度条

 10         jinDuSlider.value = cuTime

 11         

 12         //获取总时间

 13         var duTime:Float = Float(audioPlayer.duration)

 14         

 15         //播放时间秒数，换算成：时、分、秒

 16         var hour1:Int = Int(cuTime/(60*60))

 17         var minute1:Int = Int(cuTime/60)

 18         var second1:Int = Int(cuTime%60)

 19         

 20         //总时间秒数，换算成：时、分、秒

 21         var hour2:Int = Int(duTime/(60*60))

 22         var minute2:Int = Int(duTime/60)

 23         var second2:Int = Int(duTime%60)

 24         

 25         

 26         //label显示

 27 //        timeLabel.text = NSString(format: "%.2d:%.2d:%.2d / %.2d:%.2d:%.2d",hour1,minute1,second1,hour2,minute2,second2)

 28         

 29         //2015年5月2后修改

 30         timeLabel.text = NSString(format: "%.2d:%.2d:%.2d / %.2d:%.2d:%.2d",hour1,minute1,second1,hour2,minute2,second2) as String

 31     }

 32   

 33     //播放按钮事件

 34     @IBAction func audioPlayButton()

 35     {

 36         if audioPlayer.playing

 37         {

 38             return;//如果已在播放，跳出

 39         }

 40         

 41         //开始播放音频文件

 42         audioPlayer.play()

 43         

 44         //设置进图条最小是=0

 45         jinDuSlider.minimumValue = 0.0;

 46         

 47         //设置进度条最大值等于声音的描述

 48         jinDuSlider.maximumValue = Float(audioPlayer.duration)

 49         

 50         //启动定时器 定时更新进度条和时间label 在updateTime方法中实现

 51         _timer = NSTimer.scheduledTimerWithTimeInterval(0.5, target: self, selector: "updateTime", userInfo: nil, repeats: true)

 52     }

 53     

 54     //暂停

 55     @IBAction func audioPauseButton(sender:UIButton)

 56     {

 57         var title = sender.titleForState(UIControlState.Normal)

 58         if  title == "Pause" && audioPlayer.playing

 59         {

 60             audioPlayer.pause()

 61             sender.setTitle("Continue", forState: UIControlState.Normal)

 62         }

 63         else if title == "Continue"

 64         {

 65             sender.setTitle("Pause", forState: UIControlState.Normal)

 66             audioPlayer.play()

 67         }

 68     }

 69     

 70     //停止

 71     @IBAction func audioStopButton(sender:UIButton)

 72     {

 73         if(audioPlayer.playing)

 74         {

 75             audioPlayer.stop()

 76             audioPlayer.currentTime=0;

 77             timeLabel.text = "";

 78         }

 79     }

 80     

 81     //调 进度

 82     @IBAction func jinDuChange(sender:UISlider)

 83     {

 84         //获取jinDuSlider的值来设置音频播放器进度

 85         audioPlayer.currentTime = NSTimeInterval(jinDuSlider.value)

 86         

 87         //播放器播放

 88         audioPlayer.play()

 89     }

 90 

 91     //控制声音

 92     @IBAction func audioSoundChange(sender:UISlider)

 93     {

 94         //获取UISlider对象的值，并设置audioPlayer.volume

 95         audioPlayer.volume = sender.value

 96         

 97         aLabel.text = "\(sender.value)"

 98     }

 99     

100     //播放代理AVAudioPlayerDelegate

101     func audioPlayerDidFinishPlaying(player: AVAudioPlayer!, successfully flag: Bool)

102     {

103         //成功播放完毕结束

104     }

105     

106     func audioPlayerDecodeErrorDidOccur(player: AVAudioPlayer!, error: NSError!)

107     {

108         //音频播放器的解码错误

109     }

110     

111     //@availability(iOS, introduced=2.2, deprecated=8.0)

112     func audioPlayerBeginInterruption(player: AVAudioPlayer!)

113     {

114         //音频播放器开始中断

115     }

116     

117     

118     //@availability(iOS, introduced=6.0, deprecated=8.0)

119     func audioPlayerEndInterruption(player: AVAudioPlayer!, withOptions flags: Int)

120     {

121         //音频播放结束中断

122     }

123     

124     

125     /*-----mp3 end------*/

126     

127