Event Flashcards
Events
An action that causes something to happen (These are the mustard yellow blocks in App Inventor)
Command
The blocks of code that actually do the work of the app (These are the blocks that go inside the yellow blocks)
Palette
The section in the design view that shows a list of components that you can add to your app
Viewer
The section in the design view that shows what the app will look like
Components
The section in the design view that shows what items have already been added to your app
Properties
The section in the design view that shows what you can change about the current component
Media
The section in the design view that shows any images and sounds you have currently uploaded to your app
Blockly
Blockly is the name of the visual programming editor that App Inventor uses to make the blocks in the browser.
Designer
The screen where you can drag and drop component pieces and design your app.
Accelerometer Sensor
Non-visible component that can detect shaking
Canvas
A two-dimensional touch-sensitive rectangular panel in App Inventor on which drawing can be done and sprites (images) or a ball object can be moved.
Heading
A property of the “ball” component in AppInventor. This specifies the direction in which the ball travels
Heading is measured in degrees
Interval
A property of the “ball” component in AppInventor. This specifies the frequency of the ball movement
Interval is measure in milliseconds
Radius
A property of the “ball” component in AppInventor. This specifies the size of the ball
Radius is measured in pixels
Speed
A property of the “ball” component in AppInventor. This specifies how fast the ball travels
Speed is measured in pixels per second
