TK2323 Mobile Programming Sem 1 2023/2024 User Interface Quiz

ViewGroup in Android

• 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 in Android

• 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 in Android

• 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.

Layout Width Specification

• 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 in Android

• 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.

Specifying View/ ViewGroup Width

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

Gravity Attribute

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

Purpose of Padding in Layout

• 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 in Layout

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

ConstraintLayout vs RelativeLayout

• 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.