Kotlin Multiplatform
Kotlin Multiplatform :is transforming the way we build modern software by enabling the development of applications that work across multiple platforms from a single codebase. In this article, we will explore what Kotlin Multiplatform is, its benefits, key use cases, and how you can start implementing it in your projects.
What is Kotlin Multiplatform?
Kotlin Multiplatform is a feature of the Kotlin language, developed by JetBrains, that allows sharing business logic and common code across different platforms such as Android, iOS, Web and Desktop, while maintaining the ability to write platform-specific code where needed.
Key Features:
Codeshare: You can write common logic (such as data handling, validation, or networking) once and reuse it.
The Kotlin compiler takes source code as input and produces a set of platform-specific binaries as output. When compiling cross-platform projects, you can produce multiple binaries from the same code. For example, the compiler can produce both JVM .class files and native executable files from the same Kotlin file:
Native code support: In the context of Kotlin Multiplatform, it means that you can use the libraries and functionalities specific to each platform without any problems. This is essential to take full advantage of the unique features of each operating system or environment, such as iOS, Android, Web or Desktop.
Modularity: refers to the ability to split an application into independent parts (modules), allowing you to decide which parts of the code to share between platforms and which t o develop specifically for each one. This provides great flexibility to design your project according to the specific needs of your application.
What does this modularity imply?
Shared code for common logic: You can write a portion of code that is platform-independent (such as data handling, validations, or business logic) and reuse it across platforms.
Independent code for specific functionalities: If certain parts of your app are unique to a platform (for example, the user interface or functionality unique to Android or iOS), you can develop them separately without interfering with the shared parts.
Construction in parts: By using a modular approach, you can add or modify a module without having to alter the entire application. For example, if you decide to use Kotlin Multiplatform just to share networking logic at first, you can gradually expand it to include other functionalities.
By using a modular approach, you can add or modify a module without having to alter the entire application. For example, if you decide to use Kotlin Multiplatform just to share networking logic at first, you can gradually expand it to include other functionalities.
What would be “widgets” in the context of Kotlin Multiplatform?
In Kotlin Multiplatform, a “widget” could refer to:
Shared Logic Components:
Classes, functions, or structures that encapsulate common logic (such as validations, data handling, or business rules).
Although they do not directly control the user interface, these “widgets” serve as a basis for native platforms to implement their own visual components.
UI Abstractions (in certain cases):
Some developers use external libraries or tools like Kotlin Compose Multiplatform to build reusable cross-platform interfaces. In this case, a “widget” could be a reusable visual component created with Compose.
Adapted native implementations:
Each platform (Android, iOS, Web) can implement its own visual version of a widget, while using the same shared logic.
Libraries for Widgets in Kotlin Multiplatform. Although Kotlin Multiplatform does not have native widgets, you can use libraries like:
Jetpack Compose Multiplatform (from JetBrains): It allows you to create shared interfaces using Jetpack Compose, which generates similar visual components across Android, iOS, and Desktop.
KMP-NativeCoroutines + Native Widget Declaration:
Use libraries that facilitate the integration of shared logic with specific platformsUsing Kotlin Multiplatform (KMP) offers numerous advantages for modern software development, especially if you work on applications that need to run on multiple platforms (Android, iOS, web, desktop, etc.) Key advantages:
Code reuse
Shared logic: You can write important parts of your application, such as business logic, validations, data models, database access, or network management, once and reuse them across different platforms.