Summary  
This chapter explains the lifecycle phases of a UI component—creation, building, updating via state changes, and destruction—highlighting methods like initState, build, setState, and dispose.  

General domain of usage  
Mobile user interface development

## Widget lifecycle stages

In Flutter, widgets move through a clear lifecycle as your app runs. Understanding this lifecycle helps you manage state, update UI, and optimize performance.



Watch this video to see the Flutter widget lifecycle in action. You'll follow a simple stateful widget as it moves through creation, build, update, and destruction phases. The video highlights when the `build()` and `dispose()` methods are called, and shows how UI updates happen in response to state changes. This visual walkthrough will help you understand how widgets are managed by Flutter during an app's runtime.

Which statement accurately describes a stage in the Flutter widget lifecycle?

Learn the essential skills to build simple, visually appealing Android and iOS apps using Flutter. This course covers Dart fundamentals, Flutter project structure, UI building blocks, navigation, and theming to help you create robust mobile applications.

Get introduced to Flutter and Dart, their relationship, and the core concepts that power Flutter app development.

Dive into the widget-based architecture of Flutter and understand how the widget tree and build context work.

Master the essential widgets and layout systems for building clean and responsive Flutter UIs.

Implement navigation in your Flutter apps using Navigator, named routes, and data passing techniques.

Widget Lifecycle Overview

Widget lifecycle stages

Widget Lifecycle Overview

Widget lifecycle stages