June 2011
Intermediate to advanced
590 pages
19h 31m
English
Content preview from iOS Programming: The Big Nerd Ranch Guide, Second Edition
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Application States, Transitions, and Multitasking
To know when an application should save its data to filesystem, it helps to understand the states that an application can be in as well as the transitions between them.(Figure 15.5).
Figure 15.5 States of typical application
When an application is not running, it is in the not running state, and it does not execute any code or have any memory reserved in RAM.
After the user launches an application, it enters the active state. Its interface is on the screen, it is accepting events, and your code is handling those events. There is also an inactive state that is similar to the active state, except ...
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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.