音乐播放

在Activity中创建对象时传入要播放的音乐地址列表，即可顺序或循环播放。

List<String> audioList = new ArrayList<String>();

AudioPlayer audio = new AudioPlayer(audioList,false);
//开始播放

audio.start();

//停止播放

audio.stop();

代码如下：

  1 package com.farben.ams.widget;
  2 
  3 import java.util.List;
  4 
  5 import android.media.MediaPlayer;
  6 import android.media.MediaPlayer.OnCompletionListener;
  7 import android.media.MediaPlayer.OnErrorListener;
  8 import android.util.Log;
  9 
 10 
 11 /**
 12  * 播放背景音乐
 13  * @package com.farben.ams.widget
 14  * @author Keynes Cao
 15  * @create 2011-12-7 下午1:56:06 * 
 16  */
 17 public class AudioPlayer{
 18     /**
 19      * 歌曲地址列表
 20      */
 21     private List<String>    mList            =    null;
 22     /**
 23      * 播放模式
 24      */
 25     private boolean         mMode            =    true;
 26     
 27     /**
 28      * 媒体播放对象
 29      */
 30     private MediaPlayer     mMediaPlayer    =    null;
 31     /**
 32      *播放索引 
 33      */
 34     private int             currentListItem =   0;
 35 
 36     /**
 37      * @param list
 38      * <see>歌曲地址列表</see>
 39      * @param mode
 40      * <see>播放模式，默认 true 循环播放列表，false:只播放列表一次</see>
 41      */
 42     public AudioPlayer(List<String> mList, boolean mMode) {
 43         this(mList);
 44         this.mMode = mMode;
 45     }
 46 
 47     /**
 48      * @param list
 49      * <see>歌曲地址列表</see>
 50      */
 51     public AudioPlayer(List<String> mList) {
 52         super();
 53         this.mList         =     mList;
 54         mMediaPlayer     =     new MediaPlayer();
 55     }
 56     /**
 57      * <see>开启播放</see> 
 58      */
 59     public void start(){
 60         if(mList != null && mList.size() > 0){
 61             playMusic(mList.get(currentListItem));
 62         }
 63     }
 64     /**
 65      * <see>停止播放</see>
 66      */
 67     public void stop(){
 68         if(mMediaPlayer != null){
 69             //停止播放
 70             mMediaPlayer.stop();
 71             //资源回收
 72             mMediaPlayer.release();
 73             mMediaPlayer = null;
 74         }
 75     }
 76     
 77     /**
 78      * @param path
 79      * <see>播放指定的歌曲</see>
 80      */
 81     private void playMusic(String path){
 82         try{
 83             //重置到空闲状态
 84             mMediaPlayer.reset();
 85             //设置要播放的内容
 86             mMediaPlayer.setDataSource(path);
 87             //播放前准备
 88             mMediaPlayer.prepare();
 89             //开始播放
 90             mMediaPlayer.start();
 91             //注册监听事件
 92             mMediaPlayer.setOnCompletionListener(new OnCompletionListener() {
 93                 public void onCompletion(MediaPlayer arg0) {
 94                     //下一首
 95                     nextNext();                    
 96                 }
 97             });
 98             mMediaPlayer.setOnErrorListener(new OnErrorListener() {
 99                 public boolean onError(MediaPlayer arg0, int arg1, int arg2) {
100                     //发生错误时恢复到空闲状态
101                     mMediaPlayer.reset();
102                     return false;
103                 }
104             });
105         }catch(Exception ex){
106             Log.e("AudioPlayer",ex.getMessage()+"\n"+ex);
107         }
108     }
109     /**
110      *下一首歌曲 
111      */
112     private void nextNext(){
113         if(++currentListItem >= mList.size()){
114             currentListItem = 0;
115             if(!ismMode()){//非循环模式，播放完后退出
116                 stop();
117                 return;
118             }
119         }
120         playMusic(mList.get(currentListItem));
121     }
122 
123     public boolean ismMode() {
124         return mMode;
125     }
126 
127     public void setmMode(boolean mMode) {
128         this.mMode = mMode;
129     }
130 }