Android TreeView, based on RecyclerView package, support node radio \ multiple choice, support for custom node text size, color, height and color of the spacer line, etc.基于 RecyclerView 封装的 AndroidTreeView，支持单选\多选，支持自定义属性
Based on Netease cloud letter IM SDK for Android, the interface mimics QQ and WeChat, to create a simple instant messaging APP, which can be realized by adding friends, modifying personal information, basic chatting functions (including text, emoticons, voice, video, Location information send and receive function).基于网易云信 IM SDK for Android，界面仿造QQ和微信，打造的一款简单的即时通讯 APP，目前可实现好友添加，个人资料修改，基础聊天功能（包括文字，表情，语音，视频，图片和位置信息发送接收功能）
EZ Music 是以 网易云音乐 为模板，使用 Kotlin 语言开发的一款 音乐播放 APP。将会实现本地和在线音乐播放、歌单创建和管理、歌词和音乐下载等，各功能会逐步完成。EZ Music is based on Netease cloud music as a template, using Kotlin language development of a music player APP. Will achieve local and online music playback, song list creation and management, lyrics and music downloads, etc., the various functions will be gradually completed.
