wanghao:fix bug issue-37,without prompting when download apk that no SD card
Merge pull request #165 from lwanghaol/ios-style

wanghao:fix bug issue-38,without prompting when download apk that no SD card
Merge pull request #54 from heyongjian/ios-style

merge pull request
Merge pull request #167 from lwanghaol/ios-style

Merge pull request #54 from heyongjian/ios-style
Merge pull request #83 from heyongjian/ios-style

Ios style