By Shawn Welch
There is “an app for that,” yet each app starts off as an idea. rules can come from anyone—designers or builders, advertising managers or CEOs—and this booklet is ready bringing these principles to lifestyles.
iOS is a notable platform, either from a know-how perspective and as a natural company chance. With over 10 billion apps downloaded in the course of the iTunes App shop, and over 50 million new iOS units anticipated to send in 2011, no different platform places giant enterprise and person builders on a degree enjoying box like iOS does. keep in mind that, when you have 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 may also help you:
* Create easy consumer interface elements
* comprehend navigation metaphors and practices
* layout for a number of devices
* customise approach UI elements
* include system-provided and customized animations
* Use contact- and motion-based gestures
* Create UIViews and UIViewControllers utilizing center Graphics
* steer clear of rejection via the iTunes App shop
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Extra info for From Idea to App: Creating iOS UI, animations, and gestures (Voices That Matter)
From the designer and developer’s point of view, however, there’s a catch. When including audio in your app, you are responsible for defining your audio’s session properties. These properties include 77 Audio session response to the hardware Mute switch 77 Audio session response to screen lock 77 Ability to continue playing on top of other system audio such as the iPod or other music players Finally, your app’s audio session will always be silenced during system events such as an incoming phone call.
If an iOS device has multiple cameras, you can only access one camera at a time and must indicate which camera you would like to use. Finally, because the camera session also records audio, activating the camera automatically silences any audio sources. Volume Controls The volume controls on the side of an iOS device control the system volume. Your app and any sounds depend on this control. Through the iOS SDK, however, you can manipulate the system volume from your app. This means you can create custom volume controls within your UI to match the look and feel of your app.
Once an app is created in Xcode, it is signed with your developer credentials, distributed through iTunes, and can be installed on a device /Documents* Stores application data or user files. If your app requires you to edit and modify a file regularly, you should copy that file from your app bundle to the documents folder when the app first launches. Developers can also mark this directory as readable through iTunes, which gives you the ability to allow users to access files (such as audio or video recordings) created by your app /Library* Contains the subfolders /Library/Preferences and /Library/Caches, which store app data that are unrelated to the user /tmp Stores temporary files that are deleted between app launches.
From Idea to App: Creating iOS UI, animations, and gestures (Voices That Matter) by Shawn Welch