实现了移动端的互联互通的即时通信功能，该系统是基于Android平台开发的，并且实现了基本的文本聊天，语音，图片，表情等功能，还实现了文件传输功能-Achieve interoperability of mobile terminals instant messaging capabilities, the system is based on the Android platform, and to achieve a basic text chat, voice, pictures, fac