Day 1 - Setting up Flutter & Creating First App

Installation & Setup

Setting up Flutter is pretty straightforward. You can do so by installing these in your system -

1. Flutter SDK

2. Dart

3. An editor - Visual Studio Code/Android Studio/Emacs

I'll be using VS Code. Here's the official link that'll guide you through the installation.

Make sure to do these things -

1. Validate everything is right by running flutter doctor in your terminal.

2. After installing Flutter & Dart plugins in the editor, set up an emulator.

3. Make sure the path is updated.

Creating Your First Flutter Project

Inside VS Code, click on View -> Command Palette (Ctrl+Shift+P) & then create a new project. For that click on New: Flutter Project -> Application. Then name the project (Eg. hello_flutter). Your new project will start building.

Now you can run the default code that new projects come with by clicking on Run -> Debug. You can also do a Hot Reload.

Creating Your First Flutter App

Inside main. dart file, write this code snippet to print "Hello, Flutter!"

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Material(
        child: Center(
          child: Container(
            child: Text("Hello, Flutter!", textDirection: TextDirection.ltr,),
          ),
        )
      )
    );
  }
}

My Errors and How I Overcame Them

1. Error:
   The following assertion was thrown building Text("Welcome to Flutter"):

   No Directionality widget found.

   RichText widgets require a Directionality widget ancestor.

   The specific widget that could not find a Directionality ancestor was: RichText

   Solution:
   Adding text direction - textDirection: TextDirection.ltr to the Text widget.(Stackoverflow link)