马上着手开发 iOS 应用程序 (Start Developing iOS Apps Today)重新录制 因为之前录制的音效实在太差，重新录制了视频版的。http://pan.baidu.com/s/1pJ5qjwRhttps://developer.apple.com/library/ios/referencelibrary/GettingStarted/RoadMapiOSCh/index.html
