Hide keyboard in TextFormField when clicked outside

main.dart

import 'package:flutter/material.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(
        primarySwatch: Colors.red,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Hide keyboard in TextFormField when touched outside'),
      ),
      body: GestureDetector(
        onTap: () {
          print('Clicked outside');
          FocusScope.of(context).unfocus();
        },
        child: Container(
          color: Colors.white,
          child: Form(
            child: Column(
              children: [
                TextFormField(
                  onTap: () => print('Clicked TextFormField'),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}