AppBar class :
A Material Design app bar.
An app bar consists of a toolbar and potentially other widgets, such as a TabBar and a FlexibleSpaceBar. App bars typically expose one or more common actions with IconButtons which are optionally followed by a PopupMenuButton for less common operations (sometimes called the "overflow menu").
AppBar( title: Text('Flutter AppBar '), )
Components and Structure of Flutter AppBar
The AppBar mainly comprises two parameterized properties:
The Title: title is a parameter in the AppBar Class that takes a text widget.
The Leading widget: leading defines the widget displayed before the title.
However, the AppBar can avail other widgets like icons and buttons to enrich its functionality and interactivity.
Let's take a simple example of an app bar with a leading menu icon and a title:
AppBar(
leading: Icon(Icons.menu),
title: Text('Flutter AppBar '),
)