import "package:flutter/material.dart";

void main() => runApp(ExercicioAula04());

class ExercicioAula04 extends StatelessWidget
{
  @override
  Widget build(BuildContext context)
  {
    return MaterialApp
    (
      home: DefaultTabController
      (
        length: 2,

        child: Scaffold
        (
          appBar: AppBar
          (
            title: Text("ExercicioAula04"),

            bottom: TabBar
            (
              tabs:
              [
                Tab(icon: Icon(Icons.image)),
                Tab(icon: Icon(Icons.list))
              ]
            )
          ),

          body: TabBarView
          (
            children:
            [
              Center
              (
                child: Image.network('https://unilavras.edu.br/new_site/wp-content/uploads/2018/11/Logo-Unilavras-Oficial_2019.png'),
              ),

              Center
              (
                child: GridView.count
                (
                  crossAxisCount: 3,
                  children: List.generate(100, (index)
                  {
                    return Center
                    (
                      child: Text
                      (
                        'Item $index',
                        style: Theme.of(context).textTheme.headline5,
                      ),
                    );
                  })
                )
              ),
            ]
          )
        )
      )
    );
  }
}