用Android Studio写的音乐播放器小程序
主要功能为从手机本地读取所有的音频文件并且用一个ListView显示出来
点击其中的项可以进入音乐播放界面
支持随机播放，顺序播放，单曲循环等等功能
Basic Functions:
The main function is to read all audio files locally from the mobile phone and display them with a listview
Click one of the items to enter the music playing interface
Support random play, sequential play, single loop and other functions