December 2014
Beginner to intermediate
240 pages
6h 54m
English
book
Learning MIT App Inventor: A Hands-On Guide to Building Your Own Android Apps
by Derek Walter, Mark Sherman
Content preview from Learning MIT App Inventor: A Hands-On Guide to Building Your Own Android Apps
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Component Properties: The Built-in Variables
You have already seen that each component you have in your app has some collection of properties that are visible in the Designer screen. These properties control various traits of that particular component, including its color, the text it displays, and its shape, among many others. Each component has a set of parameters that are relevant to that type of component. A check box has the property isChecked, which describes, as you may guess, whether that check box is currently checked. No other component has the concept of being checked, so no other component has this property. But the check box does display some text, so it also has a text property, as do many other components.
All the properties you ...
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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.
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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.