Merge pull request #250 from whuthm/ios-style

fix bug JOYL-113,when there is no notwork,the database is not updated.
wanghao:according to sd card to distinguish copy path
Merge pull request #252 from lwanghaol/ios-style

wanghao:according to sd card to distinguish copy path
Merge pull request #106 from heyongjian/ios-style

Ios style