December 2014
Intermediate to advanced
480 pages
11h 31m
English
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Chapter 15. Working with the Real World
Desktops, laptops, iPhones, and iPads are all physical devices existing in the real world—either on your desk, on your lap, or in your hand. For a long time, your apps were largely confined to your computer, and weren’t able to do much with the outside world besides instructing a printer to print a document.
Starting with iOS and OS X 10.6, however, things began to change, and your code is now able to learn about the user’s location, how the device is moving and being held, and how far away the computer is from landmarks.
In this chapter, you’ll learn about how your programs can interact with the outside world. Specifically, you’ll learn how to use Core Location to determine where your computer or device is on the planet, how to use MapKit to show and annotate maps, how to use Core Motion to learn about how the user is holding the device, how to use the printing services available on OS X and iOS to work with printers, how to connect game controllers into your apps, and how to make sure your apps don’t excessively drain the user’s battery.
Note
Most of the technology discussed in this chapter works on both OS X and iOS. Some of the technologies have identical APIs on both platforms (Core Location, MapKit, and Game Controllers), some have different APIs on the two platforms (print services), and some are only available on iOS (Core Motion) or OS X (App Nap). We’ll let you know which technology is available where.
Working with Location
Almost every ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.