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This chapter is from the book

What Can You Build?

This first exercise demonstrates a little of what is possible with App Inventor. Throughout this book, you will learn how to maximize the power of App Inventor to build a variety of apps.

The skills you gain will also empower you to begin your own experimentation and build apps beyond the walk-throughs provided in this text.

The following sections preview some of the other apps and exercises we will be exploring throughout the book. With careful attention to detail and some creativity, you will be able to build these apps and have the foundations for creating your own set of applications.

Speak, Android!

Give your Android device a voice. This simple app (see Figure 2.19) teaches you how to enable an image to respond to touch and speak on command. You can also use it to explore other ways to work with images.

Figure 2.19

Figure 2.19 The Speak, Android app.

Pollock

Named after Jackson Pollock, the American artist who helped popularize abstract art, this app turns an Android device into a canvas for color (see Figure 2.20). You will learn how to turn buttons into paint and use the Canvas component.

Figure 2.20

Figure 2.20 The Pollock app.

Fore

MIT App Inventor has some surprisingly powerful tools for creating games. Various motion-enabled commands enable you to create some powerful games. The game you will be building will show how you can use the canvas and various sprites to create a game field and objects that can be manipulated while playing (see Figure 2.21).

Figure 2.21

Figure 2.21 The Fore golf game.

Android Quiz

Games can be fun to create, but imagine being able to use an app for your own productivity. Android Quiz (see Figure 2.22) demonstrates that you can create an actual assessment app.

Figure 2.22

Figure 2.22 Android Quiz.

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