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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Switching Screens
To open another screen, you use the block under the Control palette called open another screen. This block requires one input, which must be the name of the screen you want to open, in a text block. See Figure 8.3 for the programming that opens Screen2 when a button is pressed.
Figure 8.3 Programming an app to switch screens.
Screen behavior is like a small deck of cards on a table. You start with just one card, which is Screen1, the first screen you see. When you open another screen, that screen opens on top of the previous one, like another card being put on the deck (see Figure 8.4).
Figure 8.4 Think of multiple screens ...
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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.