April 2019
Beginner to intermediate
698 pages
15h 15m
English
Content preview from Android Programming with Kotlin for BeginnersBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Device detection mini app
The best way to learn about detecting and responding to devices and their varying attributes (screens, orientations, and so on) is to make a simple app. Let's do this by going through the following steps:
- Create a new Empty Activity project and call it
Device Detection. Leave all the other settings as their defaults. - Open the
activity_main.xmlfile in the Design tab and delete the default Hello world!TextView. - Drag a Button to the top of the screen and set its onClick property to
detectDevice. We will code this function in a minute. - Drag two TextView widgets onto the layout, one below the other, and set their id properties to
txtOrientationandtxtResolution, respectively. - Check that you have a layout that looks something ...
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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.