TK2323 Mobile Programming UI Quiz & Flashcards 2023

Questions and Answers

To define the layout of the interface by holding other View objects

To display text on the screen

To create complex layouts by specifying constraints between UI elements

layout_width Signup and view all the answers

To handle user input from various interface elements Signup and view all the answers

layout_width Signup and view all the answers

gravity Signup and view all the answers

To create extra space inside components Signup and view all the answers

As wide or tall as 100% of the layout Signup and view all the answers

Supports a flat view hierarchy Signup and view all the answers

Study Notes

A ViewGroup acts as a container for other views and can hold multiple child views.
It defines the layout structure for its child views and provides the necessary functionality for organizing UI components.

TextView displays text to the user and can be styled and formatted to enhance UI.
Supports dynamic text content, allowing text to be programmatic and editable properties like font size, color, etc.

ConstraintLayout allows flexible positioning of UI elements relative to each other and the parent container.
Reduces the nesting of layouts, improving performance and making UI design more efficient.

The 'layout_width' attribute is used to define the width of a layout in Android app development.
Common values include 'wrap_content', which sizes the view to its content, and 'match_parent', which scales the view to fill its parent container.

EditText is a specialized TextView that enables user input through a keyboard.
It can accept various text types, such as email, password, and plain text, with built-in validation features.

The 'layout_width' attribute is utilized to specify the width of either a View or ViewGroup in a layout.

The 'gravity' attribute defines the alignment of contents within a View, determining how child views are positioned within that parent's bounds.

The 'padding' attribute creates space between the content of a view and its borders, enhancing visual clarity and preventing content from touching edges.

'match_parent' indicates that the view should extend to fill all available space within its parent, making it crucial for responsive designs.

ConstraintLayout's primary advantage is its ability to position and size views directly relative to each other and the parent without deep nesting, resulting in better performance and a cleaner layout structure.