March 2013
Intermediate to advanced
1000 pages
34h 51m
English
Content preview from Programming iOS 6, 3rd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Device Architecture and Conditional Code
As you create a project (File → New → Project), after you pick a project template, in the screen where you name your project, the Devices pop-up menu offers a choice of iPad, iPhone, or Universal (meaning an app that runs on both iPhone and iPad natively, typically with a different interface on each type of device).
You are not tied forever to your initial decision, but your life will be simpler if you decide correctly from the outset. The iPhone and iPad differ in their physical characteristics as well as their programming interfaces. The iPad has a larger screen size, along with some built-in interface features that don’t exist on the iPhone, such as split views and popovers (Chapter 22); thus an iPad project’s nib files and some other resources will typically differ from those of an iPhone project.
Your choice in the Devices pop-up menu affects the details of the template on which your new project will be based. It also affects your project’s Targeted Device Family build setting:
- iPad
- The app will run only on an iPad.
- iPhone
- The app will run on an iPhone or iPod touch; it can also run on an iPad, but not as a native iPad app (it runs in a reduced enlargeable window, which I call the iPhone Emulator; Apple sometimes refers to this as “compatibility mode”).
- iPhone/iPad
- The app will run natively on both kinds of device, and should be structured as a universal app.
Two additional build settings determine what systems your device will run ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.