Page 123 - KEC Khaitan C5 Flipbook
P. 123
DESIGNING USER INTERFACES CHAPTER
AND SIMULATING DATA C2
Learning outcomes
The student will be able to:
understand the App Lab environment and design user interfaces using UI components.
create and customize sprites using image elements.
use variables to store and manipulate user input.
implement lists to store, add, and display multiple data values.
apply background settings dynamically using code.
develop interactive applications by integrating UI elements, events, and logic.
WHAT IS APP LAB?
App Lab is a visual programming environment on Code.org where you can design and
build apps using block-based or JavaScript coding. It allows users to create interactive
apps with buttons, text inputs, images, and animations.
UI COMPONENTS
A User Interface (UI) is the part of an app that users interact with. A well-designed UI
makes an app easy to use, visually appealing, and functional. In App Lab, you can create
buttons, text fields, labels, and images to build engaging applications. UI components
are interactive elements that make an app functional and user-friendly. Here's a brief
explanation of some key components:
Buttons: Buttons are clickable elements that trigger specific actions when pressed. For
example, you might use a button to submit a form, navigate to a new page, or start an
animation in an app.
Label: Labels are used to display text or information to users. They are non-interactive
and simply provide feedback or instructions. For example, a label could show the user’s
score, a message, or the name of a button.
Text Area: A Text Area is a larger, multi-line input field that allows users to type longer
text. It’s used when you expect the user to enter more than just a single line of text, such
as a description, comment, or message.
Designing User Interfaces and Simulating Data 121

