Types of Widgets

There are broadly two types of widgets in the flutter: 

• Stateless Widget
• Stateful Widget

1. Stateless Widget

Stateless Widget is a type of widget which once built , then it’s properties and state can’t be changed. These widgets are immutable, once created can’t be modified.

Note: These are used for static content or UI content that don’t need a change after time.

Key Characterstics of Stateless Widgets are: Immutable , No State and Lightweight.

Examples: Display Text , Icons, Images, etc.

2. Stateful Widget

Stateful Widgets is a type of widget that can change state. It can maintain and update the appearance in the response to change in state.

Note: These are used for dynamic change in the properties and appearance over the time.

Key Characterstics of Stateful Widgets are: Mutable State , State Lifecycle and Dynamic Updates.

Examples: Buttons, Sliders, Text Fields, etc.

Flutter is Google’s UI toolkit for crafting beautiful, natively compiled iOS and Android apps from a single code base. To build any application we start with widgets – The building block of Flutter applications. Widgets describe what their view should look like given their current configuration and state. It includes a text widget, row widget, column widget, container widget, and many more.