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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Providing User Control over Polling
Some users may not want your app to run in the background. An important control to provide users is the ability to enable and disable background polling.
For PhotoGallery, you will add a menu item to the app bar that will toggle your worker when selected. You will also update your work request to run your worker periodically instead of just once.
To toggle your worker, you first need to determine whether the worker is currently running. To do this, supplement your PreferencesRepository to store a flag indicating whether the worker is enabled.
Listing 22.12 Saving Worker state (PreferencesRepository.kt)
class PreferencesRepository private constructor( private val dataStore: DataStore<Preferences> ...
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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.