IconButton-basic

main.dart

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('FlutterZero'),
        ),
        body: Center(
          child: IconButton(
            icon: Icon(Icons.home),
            color: Colors.blue,
            iconSize: 50,
            onPressed: () {},
          ),
        ),
      ),
    );
  }
}