05

    Building Your First UI

    Beginner • 15 min • Video Lesson

    Complete tasks and quiz to finish this lesson

    Video Player Placeholder (b1D1Y_I_5Y8)

    Learning Objectives

    • Understand the composition model of the widget tree
    • Leverage core structure widgets: Scaffold, AppBar, body, and floating buttons
    • Incorporate simple visual elements: Text, Container, Icon, and Image
    • Apply margins, borders, and rounded corners to layout wrappers

    What You'll Learn

    1. Understanding widget composition: nested widgets model
    2. Scaffold: the foundation of Material Design screen structures
    3. Container styling: BoxDecoration, border radius, shadows, and paddings
    4. Aligning single child components using Center and Padding

    Key Concepts

    Scaffold
    Container
    BoxDecoration
    AppBar
    Padding
    Composition

    Key Takeaways

    • Composition over inheritance is a core Flutter layout philosophy.
    • Scaffold manages basic layout areas like headers, bodies, drawer panels, and button positions.
    • Container is a versatile box widget equipped with margin, padding, borders, and coloring utilities.

    Build Steps

    Knowledge Check

    Which widget provides typical Material layout structures like appbars and action buttons?

    What parameter of Container is used to apply background gradients and custom borders?

    Which layout approach does Flutter promote when combining basic building blocks?

    Next Lesson

    06 — Layout System Deep Dive →