TK2323 Mobile Programming Sem 1 2023/2024 User Interface Quiz
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Questions and Answers

What is the purpose of a ViewGroup in Android app development?

  • To define the layout of the interface by holding other View objects (correct)
  • To handle user input from various interface elements
  • To draw something on the screen that the user can interact with
  • To store data for future use within the app

    • What is the function of TextView in Android app development?

  • To handle user input from various interface elements
  • To define the layout of the interface
  • To draw something on the screen that the user can interact with
  • To display text on the screen (correct)

    • In Android app development, what is the role of Constraint Layout?

  • To store data for future use within the app
  • To define the layout of the interface by holding other View objects
  • To draw something on the screen that the user can interact with
  • To create complex layouts by specifying constraints between UI elements (correct)

    • Which attribute is used to specify the width of a layout in Android app development?

    <p>layout_width</p> Signup and view all the answers

    What is the purpose of EditText in Android app development?

    <p>To handle user input from various interface elements</p> Signup and view all the answers

    What attribute specifies the width of the View or ViewGroup?

    <p>layout_width</p> Signup and view all the answers

    Which attribute sets the gravity of the contents (subviews) of the View it's used on?

    <p>gravity</p> Signup and view all the answers

    What is the purpose of the 'padding' attribute in Android layout?

    <p>To create extra space inside components</p> Signup and view all the answers

    What does 'match_parent' specify in the context of layout width and height?

    <p>As wide or tall as 100% of the layout</p> Signup and view all the answers

    What is the primary advantage of ConstraintLayout over RelativeLayout in Android?

    <p>Supports a flat view hierarchy</p> Signup and view all the answers

    Study Notes

    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.

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    Quiz Team

    Description

    Test your knowledge of user interface elements and layout in Android mobile programming with this quiz. Topics include TextView, EditText, ImageView, Button, ViewgroupLayout, Constraint Layout, and more.

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