To generate SHA-1 code for your Flutter project, you can follow these steps:

1. Open your Flutter project in Android Studio.

2. Navigate to the terminal located at the bottom of your project.

3. Type the command `cd android` in the terminal and press Enter.

4. Type the command `./gradlew signingReport` in the terminal and press Enter.

Example :

keytool -list -v -keystore "C:\Users\winsa\.android\debug.keystore" -alias androiddebugkey -storepass android -keypass android

• change winsa with you pc name

5. Scroll down to the `Variant: debug` section to find the SHA-1 key or SHA-256 key.

as shown in the picture downblow

Please note that SHA-1 is considered insecure and should not be used for new applications. SHA-256 is the recommended cryptographic hash function for generating secure digital signatures and message authentication codes. You can generate both SHA-1 and SHA-256 keys using the same command in Flutter apps.

 1. Basics:

1. Flutter Introduction
2. Setting up Flutter Environment
3. Your First Flutter App

2. Dart Programming:

1. Dart Basics (Variables, Data Types, Functions, etc.)
2. Object-Oriented Programming in Dart
3. Dart Packages and Dependencies

3. Widgets and Layouts:

1. Widget Tree and Widget Hierarchy
2. Basic Widgets (Container, Row, Column, Image, Text, etc.)
3. Layouts (Padding, Center, Stack, Expanded, etc.)

4. State Management:

1. setState and StatefulWidget
2. Provider Package
3. Bloc Pattern
4. MobX State Management

5. Navigation:

1. Routes and Navigation
2. Named Routes
3. Passing Data Between Screens

6. User Input and Forms:

1. Handling User Input (Buttons, Text Fields, etc.)
2. Form Validation and Error Handling

7. Networking and APIs:

1. Making API Calls (http or Dio Package)
2. JSON Parsing and Serialization

8. Persistence:

1. Local Storage (Shared Preferences)
2. SQLite Databases

9. Firebase Integration:

1. Firebase Authentication
2. Real-Time Database
3. Cloud Storage
4. Cloud Messaging

10. Animations:

1. Implicit Animations (Tween, AnimatedBuilder, etc.)
2. Hero Animations
3. Custom Animations

11. Advanced UI:

1. Custom Paint and Canvas
2. Slivers and Custom ScrollViews

12. Flutter Plugins:

1. Using Device Capabilities (Camera, Geolocation, etc.)

13. State Management Patterns:

1. Redux State Management
2. Riverpod State Management

14. Testing:

• Unit Testing
• Widget Testing
• Integration Testing

15. Performance Optimization:

• Optimizing Layouts and Rendering
• Memory Management

16. Internationalization and Localization:

• Multi-Language Support

17. Advanced Topics:

1. Inherited Widgets
2. Custom Widgets
3. Mixins and Inheritance

18. Deployment:

1. Publishing to Google Play Store and Apple App Store
2. App Distribution

19. Flutter Web and Desktop:

• Building for Web
• Flutter for Desktop

20. CI/CD and Automation:

• Continuous Integration and Continuous Deployment
• Automating Testing and Releases

Key Widgets List:

• Scaffold
• AppBar
• FloatingActionButton
• RaisedButton
• FlatButton
• TextField
• ListView
• GridView
• SingleChildScrollView
• GestureDetector
• Dismissible
• TabBar
• BottomNavigationBar
• Card
• ListTile
• AlertDialog
• CupertinoAlertDialog
• ProgressIndicator (CircularProgressIndicator, LinearProgressIndicator)
• PageView
• WebView
• Image
• VideoPlayer
• CupertinoPicker
• CupertinoActionSheet
• CustomPaint

Conclusion:

Introduction:

Firebase is a powerful platform that provides a variety of services for web and mobile app developers. If you are a Flutter developer and want to integrate Firebase into your project, follow this simple step-by-step guide to connect Firebase to your Flutter account seamlessly.

Step 1: Install Firebase Globally

Open your terminal or command prompt.

Execute the following command to install Firebase globally:

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npm i -g firebase

Step 2: Log in to Firebase

After installing Firebase, log in to your Firebase account using the following command:

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firebase login

Enter your username and password to complete the login process.

Step 3: Activate FlutterFire CLI

• Next, activate the FlutterFire Command-Line Interface (CLI) with this command:

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dart pub global activate flutterfire_cli

Step 4: Initialize Firebase and Add Plugins

• Go to the main page of your Flutter project (usually 'main.dart').
• Import the 'firebase_core.dart' file and 'firebase_options.dart' into your main.dart file:

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import 'package:firebase_core/firebase_core.dart';
import 'firebase_options.dart';

To initialize Firebase, call the 'Firebase.initializeApp' method from the firebase_core package with the configuration from your 'firebase_options.dart' file:

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await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);

Step 5: Obtain SHA-1 Code and Add It to Your Flutter Project

• Open a terminal or command prompt.
• Navigate to the 'android' folder of your Flutter project using the following command:

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cd your_flutter_project/android

• Execute the following command to obtain the SHA-1 code:

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./gradlew signingReport

1. Look for the SHA1 value in the output, which should resemble this:

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Variant: debug
Config: debug
Store: /Users/your_username/.android/debug.keystore
Alias: AndroidDebugKey
MD5: YOUR_MD5_CODE
SHA1: YOUR_SHA1_CODE
SHA-256: YOUR_SHA256_CODE

Copy the SHA-1 code.

Go back to your Firebase project on the Firebase Console.

Navigate to your project settings and click on "Your apps."

Click on "Add fingerprint" and paste the copied SHA-1 code in the provided field.

Conclusion:

By following these simple steps, you have successfully connected Firebase to your Flutter project. Now you can make use of various Firebase services to enhance your app's functionality and provide a seamless user experience. Whether it's authentication, real-time database, cloud storage, or cloud messaging, Firebase offers a wide range of tools to empower your Flutter app. Happy coding!

If you have an issue like this
get the following warning, but I'm not sure where v1.0.6 resides.
Is it possible this error comes from a Kotlin library somehow including an old Kotlin version?

Use kotlin latest version 1.6.20 (the latest when I'm writing this post)

replace this
implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.4.30'
with
implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.4.30'

and also the gradle version for
dependencies {
classpath 'com.android.tools.build:gradle:7.1.3'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}


 As per Documents 

Error: No pubspec.yaml file found.

This command should be run from the root of your Flutter project.

Do not run this command from the root of your git clone of Flutter.

if you still getting this type of error 

then 

Looks like you are running flutter run command from a different directory (maybe parent directory).

Try running flutter run command from the project directory. 

To solve this error in the EASIEST WAY follows the below steps:

1. Go to terminal
2. Then find local tabs
3. Then click on a '+' sign and type your command.

This should solve your error

The long-awaited major upgrade to Flutter With
this upgrade, we have officially supported web, mobile, and desktop applications.
In Flutter2.0, in the basic part, you can use the same source code and release it to 5 OSs: native apps (iOS, Android), Windows, macOS, and Linux.
* It also includes the Web for browsers such as Chrome, Firefox, Safari, and Edge.
Flutter can also be incorporated into modules related to cars, TVs, and smart homes.
The Play Store alone already has over 150,000 Flutter apps, and customers around the world, including popular apps like Alibaba, Tencent, Baidu, WeChat, Grab, Yandex Go, Nubank, Sonos, Fastic, Betterment, and realtor.com, have Flutter. I'm using.

Over 1,000 Google engineers use Dart and Flutter to build apps.
Built with Flutter from these products such as Stadia, Google One, and Google Nest Hub.
Google Pay switched to Flutter as its flagship mobile app a few months ago, and it's already significantly improved in productivity and quality. By integrating the source code, the team eliminated functional differences between platforms and eliminated more than 500,000 lines of code.
Google Pay reports that it is much more efficient, significantly reduces technical debt, and has an integrated release process such as security reviews and experiments on both iOS and Android.

This initial release focuses specifically on three applications.

• PWA

• SPA

• Extending your existing Flutter mobile app to the web

Toyota, the world's best-selling carmaker, has announced plans to bring the best digital experience on the market to vehicles by building systems with Flutter.

🚙 The future of @Toyota's infotainment systems will be powered by Flutter.@ToyotaConnected is building Flutter right into the heart of their vehicles. Catch @danielthall at #FlutterEngage as he talks more about their plans with us!

On now 👉 https://t.co/T9025C5NCV pic.twitter.com/pSn299QF9P

— Flutter (@FlutterDev) March 3, 2021

$ dart fix --dry-run

$ dart fix --apply