August 2020
Intermediate to advanced
800 pages
20h 12m
English
book
Android Application Development All-in-One For Dummies, 3rd Edition
by Barry Burd, John Paul Mueller
Content preview from Android Application Development All-in-One For Dummies, 3rd Edition
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Chapter 4
Examining a Basic Android App
IN THIS CHAPTER
Finding your app’s activities, layouts, menus, and other stuff
Assigning names to things
Choosing API levels
In Chapter 3 of this minibook, you run Android Studio to create a skeletal Android app. The skeletal app doesn’t do much, but the app has all the elements you need for getting started with Android. You get a basic activity (a screen full of stuff for the user to look at). You get an elementary layout for your activity. You get an icon or two, and a little text thingy that says Hello World! You can even run the new app on an emulator or on a real Android device.
Unfortunately, this skeletal app contains many, many parts. Your platform likely has a quick way to check how many. For example, on a Windows platform, you can right click the MyFirstApp project folder in File Explorer and choose Properties from the context menu. The General tab tells you how many files and folders MyFirstApp contains. The test system used to create that example shows a whopping 1,459 files and 417 different directories. All this just to display Hello World! on a mobile device's small screen!
So before you plunge headlong into Android development, ...
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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.