很NICE的视频音频播放器

自己上课编的，请多多指教，新人学android的开发，希望各位前辈多多指教

/** Automatically generated file. DO NOT MODIFY */
package com.demo.pr5;

public final class BuildConfig {
    public final static boolean DEBUG = true;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2015-06-02 09:13  MediaPlayer\
     文件         475  2015-05-19 14:05  MediaPlayer\.classpath
     文件         847  2012-03-25 11:41  MediaPlayer\.project
     目录           0  2015-06-02 09:13  MediaPlayer\.settings\
     文件         177  2013-07-14 18:24  MediaPlayer\.settings\org.eclipse.jdt.core.prefs
     文件         841  2015-05-26 08:26  MediaPlayer\AndroidManifest.xml
     目录           0  2015-06-02 09:13  MediaPlayer\assets\
     目录           0  2015-06-02 09:13  MediaPlayer\bin\
     文件         841  2015-05-26 10:52  MediaPlayer\bin\AndroidManifest.xml
     文件     4776470  2015-05-26 08:26  MediaPlayer\bin\MediaPlayer.apk
     目录           0  2015-06-02 09:13  MediaPlayer\bin\classes\
     目录           0  2015-06-02 09:13  MediaPlayer\bin\classes\com\
     目录           0  2015-06-02 09:13  MediaPlayer\bin\classes\com\demo\
     目录           0  2015-06-02 09:13  MediaPlayer\bin\classes\com\demo\pr5\
     文件         333  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\BuildConfig.class
     文件        1999  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MediaPlayerActivity$1.class
     文件        1277  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MediaPlayerActivity$2.class
     文件        1089  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MediaPlayerActivity$3.class
     文件        2550  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MediaPlayerActivity$4.class
     文件        1398  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MediaPlayerActivity$5.class
     文件        1592  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MediaPlayerActivity$6.class
     文件        1110  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MediaPlayerActivity$7.class
     文件        1144  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MediaPlayerActivity$8.class
     文件         859  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MediaPlayerActivity$MyTask.class
     文件        7390  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MediaPlayerActivity.class
     文件        1577  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MyFileActivity$1.class
     文件        1396  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MyFileActivity$2.class
     文件        2371  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MyFileActivity$FileListAdapter.class
     文件        5305  2015-05-26 10:52  MediaPlayer\bin\classes\com\demo\pr5\MyFileActivity.class
     文件         322  2015-06-02 08:00  MediaPlayer\bin\classes\com\demo\pr5\R$attr.class
     文件         728  2015-06-02 08:00  MediaPlayer\bin\classes\com\demo\pr5\R$drawable.class
............此处省略82个文件信息