前端添加loadContact（）以及相关调用
Merge branch 'data2' of ssh://github.com/IbpTeam/demo-rio into data2_xiquan
fix
Merge pull request #220 from shuanzi/data2_xiquan

Data2_xiquan->wangfeng
Merge pull request #221 from huyuanzhe/data2

Data2#153 yuanzhe->Wangfeng
Merge pull request #222 from huyuanzhe/data2

Data2#153_yuanzhe->Wangfeng