The versions of platform-specific libraries provide the libraries that can be used to increase the platform-specific capabilities of the platforms that are targeted. Multiplatform libraries help develop shared parts of the project in one area by providing APIs for common Kotlin code and later sharing it with all the target platforms. These versions contain platform-specific tools, libraries, and extensions to the Kotlin language.Įach platform-specific version includes various platforms for example, JVM has Java 8, Java 6, and Android, then the JavaScript includes Browser and Node, and the Native has iOS, Mac, Windows, Linux, etc. These platform-specific versions include Kotlin/ JVM, Kotlin/ JavaScript, and Kotlin/ Native. To convert the code according to different platforms, it provides different compilers. To make common Kotlin code run, Kotlin provides platform-specific compilers. So in the case of android, it converts it into java bytecode, and for iOS, it converts it into iOS native machine code. Now in the Kotlin compiler, there is a frontend that converts the code into an intermediate representation known as IR, and the backend converts that intermediate representation to machine-executable code. But in the case of iOS, there is no virtual machine, so the code is converted to the native code that can be executed on iOS.
The shared business logic code for Android gets converted to Java bytecode that can be executed in JVM and Android has the virtual machine, so it can easily run it. Kotlin for iOS, Android, and other popular operating systems allows you to store the reusable pieces of code for two or more app versions. The Kotlin Multiplatform allows you to include other platforms like Linux, Windows, and the web ( JavaScript), while its subset Kotlin multiplatform mobile allows the developers to write business logic code for iOS and Android from a single codebase. It reduces time spent on writing and maintaining the same code for different platforms. Kotlin multiplatform programming enables developers to solve the problem of platform-specific dependencies. It is based on the idea of the ‘Write Once Run Anywhere’ approach, but it takes the concept of Write Once Run Anywhere to a much higher level, in which you can write the code once and target multiple platforms. This feature allows you to write the same code on multiple platforms directly, it focuses on cross-platform app development. Kotlin multiplatform is a feature released in 2017 with Kotlin 1.2.
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