rubywai

import 'package:flutter/material.dart';
import 'package:flutter_ui_lesson/screens/second_screen.dart';

class FirstScreen extends StatelessWidget {
   FirstScreen({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return  DefaultTabController(
      length: 2,
      child: Scaffold(

rubywai

import 'package:flutter/material.dart';
import 'package:flutter_ui_lesson/screens/first_screen.dart';
import 'package:flutter_ui_lesson/screens/second_screen.dart';
import 'package:flutter_ui_lesson/screens/third_screen.dart';

class MainScreen extends StatefulWidget {
  const MainScreen({Key? key}) : super(key: key);

  @override
  State<MainScreen> createState() => _MainScreenState();

rubywai

Navigator.push(context,
                MaterialPageRoute(builder: (context) =>  const SecondScreen(data: 'This is from first screen',)));
                
Navigator.pop(context,' Second screen data');                

rubywai

import 'package:flutter/material.dart';
import 'package:flutter_ui_lesson/screens/first_screen.dart';

class ThirdScreen extends StatelessWidget {
  const ThirdScreen({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Third Screen'),),

rubywai

import 'package:flutter/material.dart';
import 'package:flutter_ui_lesson/screens/third_screen.dart';

class SecondScreen extends StatelessWidget {
  const SecondScreen({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Second Screen'),),

rubywai

import 'package:flutter/material.dart';
import 'package:flutter_ui_lesson/screens/second_screen.dart';

class FirstScreen extends StatelessWidget {
  const FirstScreen({Key? key}) : super(key: key);
  //

  @override
  Widget build(BuildContext context) {
    return Scaffold(

rubywai

//debug release profile
//assets file binary network
//container
// Material , Cupertino
//Stateless .Stateful
//row column wrap container stack
//listview gridview

import 'package:flutter/material.dart';
import 'package:flutter_ui_lesson/screens/first_screen.dart';

rubywai

//debug release profile
//assets file binary network
//container
// Material , Cupertino
//Stateless .Stateful
//row column wrap container stack
//listview gridview

import 'package:flutter/material.dart';

rubywai

//debug release profile
//assets file binary network
//container
// Material , Cupertino
//Stateless .Stateful
//row column wrap container stack
//listview gridview

import 'package:flutter/material.dart';

rubywai

//debug release profile
//assets file binary network
//container
// Material , Cupertino
//Stateless .Stateful
//row column wrap container stack
//listview gridview

import 'package:flutter/material.dart';