Скачать или смотреть Setting Up a Full-Stack Ktor Project with Android and Kotlin Multiplatform

Learn how to configure a Gradle project for full-stack development with Ktor and Android, including a shared Kotlin Multiplatform module for efficient code management, reducing redundancy and streamlining your workflows.
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Streamlining Your Full-Stack Development with Ktor and Android

In the development world, efficiency is key, especially when managing multiple projects that share code. If you're working on a full-stack application using Ktor for your backend and an Android app using the Ktor client, you may find yourself duplicating a lot of code, particularly data classes. This redundancy can lead to inconsistencies, especially if you forget to update one version after making changes. In this guide, we'll tackle how to set up a well-structured Gradle project that encompasses both your Android and backend applications, while also integrating a shared Kotlin Multiplatform module to simplify your development efforts.

Understanding the Problem

You have:

Two Gradle-based projects:

Frontend: An Android Compose application that communicates with your server through a Ktor client.

Backend: A Ktor web server.

Repeated Code: You currently maintain separate data classes for both projects which leads to redundancy and increased chances of errors.

Your goal is to create a single Gradle project that includes:

Two child modules (frontend and backend)

A third module for shared code (common Kotlin Multiplatform) that avoids duplication and enables efficient code sharing.

Solution Setup

Here’s a step-by-step guide to set up your Gradle project efficiently:

Step 1: Create the Root Gradle Project

Start by creating a new root Gradle project. This project will serve as the parent for your frontend, backend, and common modules.

Step 2: Configure the Settings File

Within the root project, define the settings.gradle.kts file to include your child modules and common module:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Set Up the Root build.gradle.kts

In the root project’s build.gradle.kts file, apply necessary plugins and configure shared settings:

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Configure the Common Module

Next, create the build.gradle.kts for the common module. This will include the multipliable plugin and define shared resources:

[[See Video to Reveal this Text or Code Snippet]]

Step 5: Setup Child Modules

For both the backend and frontend modules, define the build.gradle.kts file, ensuring to include the common module as a dependency:

[[See Video to Reveal this Text or Code Snippet]]

Step 6: Move Common Code to the common Module

Transfer any common code such as data classes and utility functions into the common module. This helps avoid any redundant code in the frontend and backend projects.

Step 7: Remove Duplicates

After setting up the common module, ensure that you eliminate duplicate code within the backend and frontend modules. Instead, reference the common functionality from the newly established shared module.

Managing Gradle Wrapper Versions

Because you currently have different Gradle wrapper versions and potentially different configurations (like libs.versions.toml), you have two choices:

Standardize on a single Gradle version for all modules.

Differentiate versions for each child module by specifying them in their respective gradle-wrapper.properties files.

Conclusion

Setting up a Gradle project with a frontend Android application and a backend Ktor server while utilizing a common Kotlin Multiplatform module will greatly enhance your development efficiency. By reducing code duplication and creating a clear organizational structure, you will streamline your work processes, minimize errors, and enable easier updates.

Start implementing this setup today to take full advantage of Kotlin's capabilities and improve your full-stack development experience!