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  • Android查询系统的音频(音乐播放器的核心)

     1 //查询系统的音频库
     2     public static List<MusicBean> getMusicInfo(Context context){
     3         List<MusicBean> musicList= new ArrayList<>();
     4         //查询音频数据库
     5         Cursor c = context.getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, null, MediaStore.Audio.Media.DURATION+">=?", new String[]{"20000"}, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
     6 
     7         while (c.moveToNext()){
     8            MusicBean musicBean=new MusicBean();
     9             musicBean.setTitle(c.getString(c.getColumnIndex(MediaStore.Audio.Media.TITLE)));
    10             musicBean.setName(c.getString(c.getColumnIndex(MediaStore.Audio.Media.DISPLAY_NAME)));
    11             //对未知艺术家进行判断
    12             String singer = c.getString(c.getColumnIndex(MediaStore.Audio.Media.ARTIST));
    13             if(singer==null || "".equals(singer) || "<unknown>".equals(singer)){
    14                 singer = "未知艺术家";
    15             }
    16             musicBean.setSinger(singer);
    17             musicBean.setAlbum(c.getString(c.getColumnIndex(MediaStore.Audio.Media.ALBUM)));
    18             musicBean.setSize(c.getLong(c.getColumnIndex(MediaStore.Audio.Media.SIZE)));
    19             musicBean.setTime(c.getLong(c.getColumnIndex(MediaStore.Audio.Media.DURATION)));
    20             musicBean.setUrl(c.getString(c.getColumnIndex(MediaStore.Audio.Media.DATA)));
    21             musicList.add(musicBean);
    22 
    23         }
    24         //关闭游标,释放资源
    25         c.close();
    26         return musicList;
    27     }
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  • 原文地址:https://www.cnblogs.com/yoyohong/p/5755688.html
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