How to create a circle image in Flutter

In this Google flutter code example we are going to learn how to create a circle image in Flutter.

The code is based on flutter version 1.0.0

Main.dart (App entry point)

import 'package:flutter/material.dart';
import 'circle_image_task-4.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      //home: MyHomePage(title: 'Flutter Demo Home Page'),
      home: CircleImage(),
    );
  }
}

circle_image_task-4.dart

import 'package:flutter/material.dart';

class CircleImage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    Size size = MediaQuery.of(context).size;
    return Scaffold(
      appBar: AppBar(
        centerTitle: true,
        title: Text('Circle Image Example'),
      ),
      body: Center(
        child: CircleAvatar(
          backgroundImage: ExactAssetImage('assets/images/umbrella.png'),
          minRadius: 90,
          maxRadius: 150,
        ),
      ),
    );
  }
}

flutter circle image

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