Stateful Widget In Action
Explore how to implement a StatefulWidget in Flutter to dynamically update the interface by toggling greeting text between English and Spanish. This lesson guides you through creating state variables, using the setState method, and linking updates to a button tap for an interactive app.
We'll cover the following...
We'll cover the following...
Introduction
In this lesson, we’ll make use of the Stateful widget to toggle “Hello Flutter !” text from English to Spanish and vice versa.
We chose the Stateful widget because we need to update the currently displayed text.
In the Hello Flutter app, clicking on the ‘refresh’ IconButton in appBar will trigger updating the text. The interface rebuild is triggered by the setState method provided by the Stateful widget.
Creating Stateful widget
First, HelloFlutterApp needs to extend Stateful widget:
class HelloFlutterApp extends