flutter – How to change AppBar height

main.dart

import 'package:flutter/material.dart';

void main(){
  runApp(
      MaterialApp(
        home: Scaffold(
            appBar: PreferredSize(
              preferredSize: const Size.fromHeight(100),
              child: AppBar(
                  title: const Text("Flutter - AppBar Change Height")
              ),
            )
        ),
      )
  );
}

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