Error Description
- The "CircularProgressIndicator not found Error" can occur when Flutter is unable to locate the required widget, CircularProgressIndicator, within the widget tree or the import path is incorrect.
- This error usually manifests when the app attempts to render this widget at runtime, yet it can't find it in the current context.
Common Scenarios
- Using the CircularProgressIndicator without importing the proper Flutter material library may lead to this error, as the widget is part of the material library.
- Sometimes, incorrect or missing context can render a widget search unsuccessful, meaning the widget is not found where expected during build execution.
Code Examples
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("Circular Progress Example"),
),
body: Center(
child: CircularProgressIndicator(), // Ensure importing 'package:flutter/material.dart'
),
),
);
}
}
Additional Context
- The CircularProgressIndicator widget provides a simple and elegant way to show loading states within a Flutter application.
- This widget is usually used to indicate the progress of a task whose completion time is unknown, such as loading or fetching data from a server.
