By Shawn Welch
There is “an app for that,” yet each app begins as an idea. principles can come from anyone—designers or builders, advertising and marketing managers or CEOs—and this publication is ready bringing these rules 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 during the iTunes App shop, and over 50 million new iOS units anticipated to send in 2011, no different platform places immense company and person builders on a degree enjoying box like iOS does. take into account that, when you've got an concept for an app, now could be the time to make it happen.
Whether you’re a fashion designer or a developer, this e-book can assist you:
* Create uncomplicated 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 by way of the iTunes App shop
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Additional resources for From Idea to App: Creating iOS UI, animations, and gestures (Voices That Matter)
Basic User Interface Objects 51 5. User Interface Controllers and Navigation 71 6. User Interface Buttons, Inputs, Indicators and Controls 89 iOS App Blueprint The Basics Adding standard UI elements to your first iOS App. 107 This page intentionally left blank Chapter 3 Physical Hardware W hen designing or developing applications—especially applications created for mobile devices—one of the most important aspects to consider is user experience (UX). User experience doesn’t just involve designing a user interface; it encompasses everything from workflows to input devices.
Mute Switch The Mute switch is used to silence iOS devices. 2 and a hardware switch that controlled an orientation lock (preventing the device from automatically rotating). 2, Apple changed the function of this switch to a Mute toggle. 2, their Orientation Lock switch automatically changed to a Mute switch. For iOS devices in the iPhone family, this switch also enables the vibrate function of the phone. This does not, however, automatically enable Vibrate mode for your app. If you want conditional sound versus vibrate based on the position of the Mute switch, you need to track and handle the logic within your app.
So, if you can’t call drawRect from your code, how do you refresh a view? The answer is to call the function setNeedsDisplay. Because resources are scarce on mobile devices, iOS attempts to optimize resource intensive processes whenever possible. Drawing content to the screen can require a lot of resources. Instead of manually calling drawRect to refresh a view, set the view as setNeedsDisplay. When a view has the setNeedsDisplay flag set, iOS automatically refreshes the view when it is most efficient.
From Idea to App: Creating iOS UI, animations, and gestures (Voices That Matter) by Shawn Welch