By Shawn Welch

There's “an app for that,” yet each app starts off as an idea. principles can come from anyone—designers or builders, advertising managers or CEOs—and this booklet is ready bringing these principles to lifestyles.

iOS is a extraordinary platform, either from a know-how viewpoint and as a natural company chance. With over 10 billion apps downloaded throughout the iTunes App shop, and over 50 million new iOS units anticipated to send in 2011, no different platform places tremendous enterprise and person builders on a degree taking part in box like iOS does. remember that, when you've got an concept for an app, now's the time to make it happen.

Whether you’re a fashion designer or a developer, this e-book can help you:
* Create easy consumer interface elements
* comprehend navigation metaphors and practices
* layout for a number of devices
* customise procedure UI elements
* comprise system-provided and customized animations
* Use contact- and motion-based gestures
* Create UIViews and UIViewControllers utilizing middle Graphics
* steer clear of rejection by means of the iTunes App shop
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Additional info for From Idea to App: Creating iOS UI, animations, and gestures (Voices That Matter)

Sample text

All of your simple data structures, such as arrays and dictionaries (value-key paired arrays), are defined in Foundation. Additionally, Foundation defines utility functions for network operations and XML parsing. Finally, while Foundation and iOS are primarily Objective-C objects and classes, there exists a toll-free bridge to basic C representations of objects. This means you can move between the C and Objective-C representation of an object without any impact on performance. com/reference#foundation for more information on the Foundation framework.

IdleTimerDisabled = YES; but make sure your app can wake up from sleep without issue. When the device enters a sleep state, some processes continue, such as sound and network processes, but others are halted. Animations, timers, and other triggers stop and need to be restarted when the app resumes. If these processes are state oriented, you will need to save their state when a sleep event is triggered. ” The beauty of iOS devices is their versatility when it comes to orientation. If you rotate a device, apps adjust and optimize themselves to fit the screen.

77 /Documents 77 /Library 77 /Library/Preferences 77 Any custom subdirectories created Designer Note Be aware of the impact an app has on user workflows. Because iOS apps are isolated from one another, your app cannot interact directly with another app installed on a device. If necessary, you can launch system apps, such as Safari, Maps, YouTube, and Phone; or your app can register a custom URL scheme that allows other apps to launch it. Besides providing initial launch parameters, however, apps can only launch another app; they cannot interact with its data.

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