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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Color as a List
You might have noticed the built-in blocks palette called Colors. In it are 13 color blocks, which make setting the colors of background and buttons in code blocks quick and easy. But the really interesting part is at the bottom of the palette: the make color block (see Figure 6.16).
Figure 6.16 Making a custom color out of a list. This one has red at maximum and blue and green at zero. The color will be red.
Colors in App Inventor are really just lists. These lists must have exactly three items in them, and those items must be numbers, which specify the red, green, and blue parts of the color. Using the make color block, you ...
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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.