十天冲刺（第二阶段）

一、说在前面

　　最近各个科都开始试验了太多了最近安卓学习的不是很多但是也有一些小的收货

二、完成情况

　　今天主要完成了语音通话demo的学习过程还可以过程中困难有但是还是可以克服的

{
  "name":"file.txt",
  "size":190184,
  "type":"txt",
  "fileUrl":"http://www.demo.com/am.ind",
  "user":
  {
    "id":"4242",
    "name":"Robin",
    "portrait":"http://example.com/p1.png",
    "extra":"extra"
  },
  "extra":""
}
{
  "sightUrl":"http://rongcloud...com/video...",
  "content":"/9j/4AAQSkZ/2wB...hDSaSiimB//9k=",
  "duration":2,
  "size":734320,
  "name":"video_xx.mp4",
  "user":
  {
    "id":"4242",
    "name":"Robin",
    "portrait":"http://example.com/p1.png",
    "extra":"extra"
  },
  "extra":"extra"
}