Merge pull request #31 from heyongjian/ios-style

merger
optimize for joy folder
modify bug when save first time for joy folder
Merge pull request #86 from whuthm/ios-style

huangming: fix the bug for launcher crashing when push list str is null.
Merge pull request #83 from lwanghaol/ios-style

optimize for joyfolder
Merge pull request #58 from heyongjian/ios-style

Ios style