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Learning iOS Development: A Hands-on Guide to the Fundamentals of iOS Programming by Erica Sadun, Rod Strougo, Maurice Sharp

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11. Navigation Controllers II: Split View and the iPad

iPads account for almost half of iOS devices. As of June 2013, there were more than 600 million total iOS devices. Depending on the statistics you look at, iPads account for anywhere from 40% to 60% of those units. All iPhone apps will run on iPad, but they do so in a special mode. For the user, the app screen is centered on the display at actual or double size. Either experience is less than optimal. Creating a universal app, one that uses appropriate screen layouts and graphics on both iPhone and iPad, gives you the best chance of reaching customers using either handheld or tablet devices.

If you have not used an iPad, or even if you have, you might wonder why you need to do something different ...

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