android 查寻mp3 amr多媒体文件方法

public ArrayList<Map<String, String>> getData(){		ArrayList<Map<String, String>> data = new ArrayList<Map<String, String>>();		ContentResolver cr =mContext.getContentResolver();		Uri audio_uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;		String[] columns = new String[] { MediaStore.Audio.Media.TITLE,				MediaStore.Audio.Media.DATA };		// 要读的列名 条件是只要是muisc为真都查找处理		Cursor cursor = cr.query(audio_uri, columns, MediaStore.Audio.Media.IS_MUSIC+"=?", new String[]{String.valueOf(1)}, null);		// 跟查询SQL一样了,除了第一个参数不同外.后面根据时长过滤小于10秒的文件		while (cursor.moveToNext()) {			// 循环读取第一列,即文件路径,0列是标题			//System.out.println(cursor.getString(0) + "文件路径：" + cursor.getString(1)+" 格式："+cursor.getString(2));			String filePath = cursor.getString(1);			Map<String, String> map = new HashMap<String, String>();			map.put("file_path", filePath);			map.put("file_name", cursor.getString(0)+FileHelper.getSuffix(filePath));			data.add(map);		}		cursor.close();		return data;	}