App Inventor Classic Reference Documentation

App Inventor Classic • App Inventor Classic • FOR APP INVENTOR 2 CLICK HERE• App Inventor Classic • App Inventor Classic

Components

These pages describe the components you can use in App Inventor to build your apps.

Each component can have methods, events, and properties. Most properties can be changed by apps — these properties have blocks you can use to get and set the values. Some properties can't be changed by apps — these only have blocks you can use to get the values, not set them. In this document, read-only properties are shown in italics. A few properties are only available in the Designer.

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Blocks

Click here for an overview on understanding all blocks and how they work.

The following pages describe the different types of blocks that you can use when you build your App Inventor apps.

Concepts