Lecture Notes: Flutter UI Development for Beginners to Advanced

Introduction

• Began with a simple app development concept.
• Aim: To transition beginners from basic to advanced learners.
• Approach: Start from text and view layout to more complex UIs.
• Scope: Covers different aspects of UI including scrollable views, dynamic data handling, and reusable widgets.

Initial Setup

• Created a new Flutter project.
• Organized folders: android, ios, lib, etc.
• Main entry point: main.dart file inside lib folder.
• Intro to Flutter's StatelessWidget and StatefulWidget.
• Basic app functionality: Counter app example.
• State management using setState.

Layout Basics

• Scaffold structure for pages.
• Using Container, Row, Column widgets for alignment.
• Styling text: Using Text widget and TextStyle.
• Color and borders: Using BoxDecoration.
• Dynamic height and width adjustments using MediaQuery.

Accessing Images and Assets

• Organizing images inside assets folder.
• Declaring asset paths in pubspec.yaml.
• Displaying images using Image.asset and AssetImage.

Complex UI Components

Bottom Navigation Bar

• Implemented using BottomNavigationBar widget.
• Managed state changes for navigation.
• Customizing icons and text styles for selected and unselected states.

Home Screen Layout

• Organized layout into rows and columns.
• Using ListView for scrollable content.
• Complex UI elements: Text widgets, Containers with padding, alignment.

Reusable Widgets

• Creating custom widgets like BottomBar, TicketView, HomeScreen to encapsulate UI components.
• Reusable widget for bottom navigation tabs.

Advanced UI Components

Dynamic Data Implementation

• Data handling using maps and lists in Dart.
• Creating and using a TicketView widget for dynamic ticket information.
• Handling dynamic color changes and styling based on conditions.
• Implementing dynamic UI list rendering through loops.

Styling and Theming

• Centralized style management using a dedicated styles.dart file.
• Defining and accessing colors and text styles from a single source.

Performance Optimizations

• Conditional styling and layout adjustments to improve looks and efficiency.
• Layout adjustments for dynamic content.
• Implementing Get package for efficient state management.

Profile Screen Layout

• Scaffold and ListView structure for the profile screen.
• Implementing custom styles, spacings, and decorations.
• Overlapping elements and using Stack widget for complex layouts.

Detailed Code Walkthrough

• Conversion of fixed components into dynamic, reusable widgets.
• Adjusting UI elements based on different screen sizes using MediaQuery.
• Managing state and UI updates in a clean and efficient manner.
• Handling click interactions using InkWell widget.

Implementing Utility Functions

• Functions for dynamically computing height and width based on screen size.
• Using the Get package for global state management across widgets.

Conclusion

• Demonstrated building a complete app from scratch, tackling various complexities progressively.
• Emphasized the importance of reusable code in app development.
• Encouraged practice through detailed implementation of UI components.
• Future suggestions: More practice on complex UI layouts and animations.