App Inventor 14

About this set

Created by:

mfcarrell  on April 25, 2012

Subjects:

Computer Science

Description:

Understanding an App's Architechture, Chapter 14 from App Inventor, Create You Own Apps

Classes:

APP's for Handheld Devices, CS Principles SHS

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App Inventor 14

components
The ______________ are the the objects are placed (canvases, labels, buttons, etc.)
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Definitions

components The ______________ are the the objects are placed (canvases, labels, buttons, etc.)
behaviors The _______________ are how the app responds to user and external events.
user interface The visible components, like buttons, text boxes, images, etc. make up the _______________________.
functionality The non-visible components provide access to the built-in ________ of the device, for example Texting, LocationSensor, TextToSpeech.
properties ______________________ are the memory slots for storing information about the components.
properties Width, height, text, and color are some examples of _______________.
behavior The ____________ defines how an app should respond to events.
user A button click is an example of a(n) ________-initiated event.
external A text arriving to the phone is an example of a(n) ________ event.
function When an event occurs, the app reacts by calling a set of ___________________.
event handler The sequential list of instructions that tell the app how to respond when an event is called is a(n) __________________.
Initialize When the app needs to perform certain functions right as the app begins, the event you should use is Screen1._____________.
clock or timer When you need something to happen based on time, like the ladybug to move every 1/10 of a second, you should use a ___________.
sprites Activities that involve graaphical objects that are interactive within a canvas are ___________.
if An ____ is an example of a conditional block.
foreach _____________ are performed for each item in a list.
variable A _____________ is a memory slot that holds information that is not associated with any component.

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