Android获得音乐文件的方法

Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder);

//初始化光标

Cursor cursor = context.getContentResolver().query( MediaStore.Audio.Media.EXTERNAL_XONTENT_URL, null, null, null, MediaStore.Audio.Media.DEFAULT_SOET_ORDER);

//获得相应信息的办法

歌曲ID：MediaStore.Audio.Media._ID
Int id = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media._ID));

歌曲的名称 ：MediaStore.Audio.Media.TITLE
String tilte = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE));

歌曲的专辑名：MediaStore.Audio.Media.ALBUM
String album = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM));


歌曲的歌手名： MediaStore.Audio.Media.ARTIST
String artist = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST));

歌曲文件的路径 ：MediaStore.Audio.Media.DATA
String url = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA));

歌曲的总播放时长 ：MediaStore.Audio.Media.DURATION
Int duration = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DURATION));

歌曲文件的大小 ：MediaStore.Audio.Media.SIZE
Int size = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.SIZE));