https://developer.apple.com/library/ios/#qa/qa1686/_index.html
optional but recommended って ほとんど書いてあるから、あった方が良いってことかな
This entry was posted on 金曜日, 3月 2nd, 2012 at 11:22 PM and is filed under iOS. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.