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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Updating the Database
You can now modify a crime’s details – but when you navigate away from the detail screen, all your changes are wiped away. Your last task in this chapter will be to save those changes to the database.
To accomplish this task, you will start at the database layer and work your way up.
To begin, open CrimeDao.kt.
Previously, you used the @Query annotation to write functions that query the database.
Other annotations allow you to create functions that add, delete, or update records in the database.
Since the crime you are altering already exists in the database, write a function to update the entry.
Annotate your function with @Update and use the suspend modifier so that you can call it from a coroutine scope. ...
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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.
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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.