import 'package:flutter/material.dart';

void main() {
  runApp(const MainApp());
}

class MainApp extends StatelessWidget {
  const MainApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          actions: [],
        ),
        body: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            TextField(
              key: const ValueKey("1"),
              decoration: const InputDecoration(
                hintText: "1",
              ),
              onTapOutside: (event) {
                debugPrint("Callback from 1");
              },
            ),
            const TextField(
              key: ValueKey("2"),
              decoration: InputDecoration(
                hintText: "2",
              ),
            ),
          ],
        ),
      ),
    );
  }
}