CircleAvatar

 import "package:flutter/material.dart";

void main() {
  runApp(const CircleApp(),);
}
class CircleApp extends StatelessWidget {
  const CircleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: "CircleAvatar in Flutter",
      theme: ThemeData(
        primarySwatch: Colors.blueGrey,
      ),
      home: const CircleDemo(),
    );
  }
}
class CircleDemo extends StatefulWidget {
  const CircleDemo({super.key});

  @override
  State<CircleDemo> createState() {
    return CircleState();
  }
}
class CircleState extends State<CircleDemo> {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("CircleAvatar"),
      ),
      body: Center(
        child: Container(
          width: 300.0,
          height: 300.0,
          child: CircleAvatar(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                Text("Oliver Sea", style: TextStyle(color: Colors.white, fontSize: 50.0, fontWeight: FontWeight.bold,),),
              ],
            ),
            radius: 100.0,
            backgroundImage: AssetImage("assets/images/oliver_sea.jpg",),
            backgroundColor: Colors.grey,
          ),
        ),
      ),
    );
  }
}