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Computer Science
Mobile Application Development
Flutter Framework
1. Introduction to Flutter and Dart
2. Setting Up the Development Environment
3. Flutter Fundamentals: Widgets
4. Building Layouts in Flutter
5. Handling User Input and Forms
6. Displaying Collections and Lists
7. Navigation and Routing
8. State Management
9. Asynchronous Programming
10. Working with Data and Backend Services
11. Assets, Images, and Fonts
12. Advanced UI and Animations
13. Interacting with Native Platform Features
14. Testing, Debugging, and Performance
15. Building and Deploying Applications
16. Flutter Ecosystem and Continuous Learning
3.
Flutter Fundamentals: Widgets
3.1.
The Core Concept: "Everything is a Widget"
3.1.1.
Widget Definition
3.1.2.
Widget Composition
3.1.3.
Widget Immutability
3.2.
Declarative UI Programming
3.2.1.
Principles of Declarative UI
3.2.2.
Comparison with Imperative UI
3.2.3.
Benefits and Trade-offs
3.3.
The Widget Tree
3.3.1.
Structure and Hierarchy
3.3.2.
Parent-Child Relationships
3.3.3.
Widget Keys
3.3.3.1.
ValueKey
3.3.3.2.
ObjectKey
3.3.3.3.
UniqueKey
3.3.3.4.
GlobalKey
3.4.
The `build()` Method
3.4.1.
Purpose and Usage
3.4.2.
BuildContext
3.4.3.
Rebuilding and Performance
3.4.4.
Best Practices
3.5.
Stateless vs. Stateful Widgets
3.5.1.
StatelessWidget
3.5.1.1.
Characteristics
3.5.1.2.
Use Cases
3.5.1.3.
Implementation Pattern
3.5.2.
StatefulWidget
3.5.2.1.
Characteristics
3.5.2.2.
Use Cases
3.5.2.3.
The `State` Object
3.5.2.3.1.
Lifecycle Methods
3.5.2.3.1.1.
`initState()`
3.5.2.3.1.2.
`didChangeDependencies()`
3.5.2.3.1.3.
`build()`
3.5.2.3.1.4.
`setState()`
3.5.2.3.1.5.
`didUpdateWidget()`
3.5.2.3.1.6.
`deactivate()`
3.5.2.3.1.7.
`dispose()`
3.5.2.4.
Widget Lifecycle
3.5.2.4.1.
Creation
3.5.2.4.2.
Update
3.5.2.4.3.
Destruction
3.5.2.5.
The `setState()` Method
3.5.2.5.1.
Triggering UI Updates
3.5.2.5.2.
Best Practices
3.5.2.5.3.
Performance Considerations
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4. Building Layouts in Flutter