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[VibeCoding] Flutter Professional Level-Up: 3-Stage Build Variants (Flavor) and Environment Switching Without Code Modification

"Are you still modifying code every time you change server addresses?" In real-world practice, development (Dev), staging, and production (Prod) environments are strictly separated. However, many developers are exposed to the risk of deployment accidents by manually changing variables in a single main.dart file. This course covers a 'real production-grade architecture' that allows you to instantly switch environments simply by selecting a build target, without modifying a single line of code.

(5.0) 3 reviews

32 learners

Level Intermediate

Course period Unlimited

  • survivalcoding
Flutter
Flutter
Docker
Docker
dart
dart
n8n
n8n
get-it
get-it
Flutter
Flutter
Docker
Docker
dart
dart
n8n
n8n
get-it
get-it

What you will gain after the course

  • Independent build and execution capability for each environment

  • Advanced Dependency Injection (DI) Applications Using Get_it

  • Creating Your Own Test Environment Without a Server Developer

🚀 [Update Complete] [Special] Production Mastery: Flavor Environment Separation and Firebase Emulator session has been added!

Celebrating 2.5x content update! Despite the increased content, the price remains at the current 22,000 won only until [January 30th]. After that, it will increase to the regular price of 33,000 won.


The standard that separates the levels of Flutter expertise,

It's the 'environment separation strategy'

Switch environments with just build targets, without modifying a single line of code


Break free from the hassle of modifying code every time and the risk of deployment accidents,
and acquire systematic environment management skills using Build Flavors and Get_it.

"If you've solidified your foundation and theory through my previous courses, now it's time to experience 'the speed of real-world practice'. No lengthy explanations needed. In 2 hours, your project will be perfectly isolated by environment, ready for deployment with just a single mouse click. Short, but the most efficient course in your development career"

Skip the boring theory, choose 70 minutes of core practical skills

Instead of a long-winded lecture, you'll take away just one solid '3-stage build separation' technique that you can immediately apply in the field.

From Flutter, get-it, n8n, Docker usage
to environment-specific independent builds and DI applications, we cover practical essentials.


10-Second Coding with AI (Antigravity)

If you have specifications, minimize code typing through Antigravity AI.

Instantly switch between development, verification, and production environments without modifying a single line of code,
and design the entire process of building your own test server.


'Server-Independent' Development Environment Using n8n and No-code

Even the time spent waiting for backend developers is too precious. We introduce the tools of a 'complete developer' who builds and validates their own Staging server by combining n8n and AI.

Complete environment configuration with pure Dart alone,
and finish the practical development experience from terminal execution in VS Code.

Experience the magic of environment switching
without a single line of code

Section 1 - Understanding the Basics of Build Variants

Understand the necessity of environment-specific build configurations encountered in Flutter production work. Learn how to separate and use development, staging, and production environments without code modifications, and learn how to configure build environments using only Dart without native settings.


Section 2 - Building a Development Environment Using Mock Environment

Quickly build an independent development environment using mock data. Practice how to effectively connect state management and UI using dependency injection (DI) libraries such as GetIt.


Section 3 - Building a Test (Staging) Server Based on n8n

Understand the role of a staging server and build your own testing environment using n8n and Docker. Learn how to integrate APIs on the staging server using Webhook nodes.


Section 4 - Environment Switching Techniques Without Code Modification

Configure the DI setup required for the staging environment and run the app. Learn how to run the app for each build environment through the terminal, and master environment switching for final checks before actual deployment.


Section 5 - Final Environment Configuration for Production Deployment

Complete the build environment-specific run configuration in VS Code and perform final checks for production deployment.



Are you still manually changing main.dart?
This course was made for people just like you.


✔️ Developers who have broken into a cold sweat after forgetting to change the server address before deployment

  • Those who want to escape the risk of deployment accidents caused by manually changing variables in main.dart

  • Those who want to build a stable deployment process with independent build and execution capabilities for each environment

  • Those who want to experience a practical architecture that instantly switches environments just by selecting a build target without any code modifications

✔️ Those curious about practical applications of Dependency Injection (DI) using Get_it

  • Those who want to learn advanced dependency injection (DI) application methods using the Get_it library

  • Those who want to learn how to improve code reusability and testability through DI

  • Those who want to develop the ability to write flexible and scalable code even in complex app structures

✔️ Those who want to build a Mock server using AI and no-code tools without a server developer

  • Those who want to quickly build their own test environment without the help of a server developer

  • Those who want to learn how to build and automate a Staging server using n8n and Docker

  • Those who want to experience an efficient testing process by utilizing mock data and actual staging server data


Experience the magic of freely switching between build environments without modifying a single line of code.
It will be the best choice for stable deployment and efficient development.

Things to Note Before Taking the Course


Practice Environment

  • Operating System: macOS, Windows, and Linux are all supported.

  • Required installation tools: Flutter SDK, Dart SDK, Android Studio or VS Code.

  • Recommended specifications: 8GB RAM or more, 50GB of SSD storage space is recommended.

Prerequisites and Important Notes

  • This is a course for those with Flutter development experience.

  • It would be good if you have watched Flutter Intermediate Part 1: Clean Architecture or have related knowledge.



Roadmap


Recommended for
these people

Who is this course right for?

  • A developer who broke into a "cold sweat" after forgetting to change the server address before deployment

  • A developer who knows the concept of Dependency Injection (DI) but is thirsty for practical application

  • A developer with unnecessarily long wait times for server API integration testing

Need to know before starting?

  • Flutter and Dart Fundamentals

  • Experience using the Get_it package

Hello
This is

12,313

Learners

886

Reviews

864

Answers

4.7

Rating

15

Courses

I am Junseok Oh, a developer who teaches and writes books.
I run the 'Junseok Oh's Survival Coding' YouTube channel and the Survival Coding (https://survivalcoding.com) educational platform.

Specialties: Android, Flutter

Books
Oh Jun-seok's Flutter Survival Coding (Hanbit Media 2020)
Oh Jun-seok's Android Survival Coding: Kotlin Edition (Hanbit Media 2018)
Android Until It Works (Ruby Paper 2018)

Key Experience
CEO of OhRange
IT Development Vocational Training Instructor at Semin Vocational Training School
Director of Suwon Smart App Development Academy
LG Electronics MC Division
Security Division, Tokai Rika Co., Ltd., Aichi Prefecture, Japan
IT Division, Nihon Techseed Co., Ltd., Aichi Prefecture, Japan

LinkedIn: https://www.linkedin.com/in/junsuk5/

Curriculum

All

26 lectures ∙ (3hr 3min)

Published: 
Last updated: 

Reviews

All

3 reviews

5.0

3 reviews

  • songjin39148713님의 프로필 이미지
    songjin39148713

    Reviews 20

    Average Rating 5.0

    Edited

    5

    100% enrolled

    It was a short but substantial lecture on separating development environments, which was great for quickly learning the core concepts. Additionally, it was good to see how to structure and rapidly build apps through this Antigravity approach.

    • wogks274388님의 프로필 이미지
      wogks274388

      Reviews 12

      Average Rating 4.6

      5

      83% enrolled

      Things you must know before or after joining a company, I had always been curious about development environment separation, and this completely cleared it up for me. I was able to use MCP, which I had always been curious about, without any burden, and what was even better was being able to approach various new tools I learned about without hesitation.

      • savetheaspirin6157님의 프로필 이미지
        savetheaspirin6157

        Reviews 1

        Average Rating 5.0

        5

        100% enrolled

        $26.40

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