App Inventor: Create Your Own Android Apps

385 Pages·2011·9.75 MB·English

by  David Wolber

App Inventor
Create Your Own Android Apps

App Inventor
Create Your Own Android Apps
David Wolber, Hal Abelson,
Ellen Spertus & Liz Looney
Beijing · Cambridge · Farnham · Köln · Sebastopol · Tokyo
App Inventor
by David Wolber, Hal Abelson, Ellen Spertus & Liz Looney
Copyright © 2011 David Wolber, Hal Abelson, Ellen Spertus & Liz Looney. All rights reserved.
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April 2011: First Edition.
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978-1-4493-9748-7
[TI]
For Tomás, who reinvents me every day.

Contents
Foreword......................................................... xiii
Preface.......................................................... xv
1. Hello Purr......................................................... 1
What You’ll Learn 1
The App Inventor Environment 2
Designing the Components 3
Adding Behaviors to the Components 8
Packaging the App for Downloading 14
Sharing the App 15
Variations 15
Summary 16
Part I. 12 Customizable Apps
2. PaintPot......................................................... 19
What You’ll Learn 20
Getting Started 20
Designing the Components 20
Adding Behaviors to the Components 24
The Complete App: PaintPot 35
Variations 35
Summary 36
3. MoleMash........................................................ 37
What You’ll Build 37
What You’ll Learn 38
Getting Started 38
Adding Behaviors to the Components 41
viii  Contents
The Complete App: MoleMash 49
Variations 49
Summary 50
4. No Texting While Driving........................................... 51
What You’ll Learn 52
Getting Started 53
The Complete App: No Texting While Driving 66
Variations 66
Summary 68
5. Ladybug Chase.................................................... 69
What You’ll Build 69
What You’ll Learn 69
Designing the Components 70
Getting Started 71
Animating the Ladybug 71
Displaying the Energy Level 74
Adding an Aphid 78
Adding a Restart Button 82
Adding the Frog 83
Adding Sound Effects 86
Variations 86
Summary 87
6. Paris Map Tour.................................................... 89
What You’ll Learn 89
Designing the Components 90
Setting the Properties of ActivityStarter 90
Adding Behaviors to the Components 91
Setting Up a Virtual Tour 94
Variations 98
Summary 98
7. Android, Where’s My Car?........................................... 99
What You’ll Learn 99
Getting Started 100
Designing the Components 100