Tutorials

PaintPot lets you scribble in different colors by touching the screen to draw dots and lines. Concepts introduced in this project include: Canvas components for drawing; event handlers that take arguments, including touch and drag events; and Arrangement components for controlling screen layout. Part 2 extends the project to draw dots of different sizes, as an introduction to global variables. Variation: PaintPic extends this app to use the camera component to take a new picture for drawing upon. This version of the tutorial is for use with App Inventor 2.

You know that texting while driving is dangerous, so you've created and installed the No Text While Driving app on your phone. Now, when you drive you open that app and let it auto-respond to incoming texts. But the jingle of the texts coming in is killing you with curiosity-- wouldn't it be great if you could hear the texts spoken aloud? With Part II of the tutorial, you'll extend the app so that it speaks out both the message and who sent it. And since you're making some changes anyway, you'll modify the auto-response so it reports your whereabouts in the reply: "Sorry, I'm driving and I'm at 1600 Pennsylvania Avenue". Before completing this tutorial you should complete part I.

In the arcade game Whac-a-Mole TM , a "mole" pops up at random positions on a playing field, and the user score points by hitting the mole with a mallet. This is a similar game that uses the touchscreen. This tutorial introduces: image sprites, timers, and procedures.

MoleMash2 provides an alternative implementation of the classic boardwalk game that demonstrates how to use the Advanced features in the Blocks Editor and how to layer Sprites.