Android - 通过系统数据库获取SD卡音乐媒体信息

 1     private void getMusicPaths(){
 2         //
 3         // 获取音乐列表
 4         //
 5         Cursor cursor = getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, null, null, null, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
 6         if(cursor.moveToFirst()){
 7             while (!cursor.isAfterLast()) { 
 8                 //歌曲编号
 9                 //int id = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media._ID));  
10                 //歌曲标题
11                 String tilte = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE));  
12                 //歌曲的专辑名：MediaStore.Audio.Media.ALBUM
13                 //String album = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM));  
14                 //歌曲的歌手名： MediaStore.Audio.Media.ARTIST
15                 String artist = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST));  
16                 //歌曲文件的路径 ：MediaStore.Audio.Media.DATA
17                 String url = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA));   
18                 //歌曲的总播放时长 ：MediaStore.Audio.Media.DURATION
19                 //int duration = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DURATION));    
20                 //歌曲文件的大小 ：MediaStore.Audio.Media.SIZE
21                 //Long size = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.SIZE));
22                 cursor.moveToNext(); 
23             } 
24         }
25     }