May 2022
Intermediate to advanced
688 pages
20h 12m
English
book
Android Programming: The Big Nerd Ranch Guide, 5th Edition
by Bryan Sills, Brian Gardner, Kristin Marsicano, Chris Stewart
Content preview from Android Programming: The Big Nerd Ranch Guide, 5th Edition
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For the More Curious: Singletons
The singleton pattern, as used in the CrimeRepository, is very common in Android. But singletons get a bad rap because they can be misused in a way that makes an app hard to maintain.
Singletons are often used in Android because they outlive a single fragment or activity. A singleton will still exist across rotation and as you move between activities and fragments in your application.
Singletons also make a convenient owner for your model objects. Imagine a more complex CriminalIntent application with many activities and fragments modifying crimes. When one component modifies a crime, how would you make sure that updated crime was sent over to the other components?
If the CrimeRepository is the ...
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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.
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.