国外《The Business of iPhone App Development》电子书配套源代码，对专业IOS开发工程师有很好参考价值。-Abroad, " The Business of iPhone the App Development, e-books matching the source code of professional IOS development engineers a good reference value.

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简略的实现了电子书的实现～包括下载和布局和略读～-Briefly to achieve the realization of e-books to download and layout and skimming to