Make your Android application work on iOS tutorial Kotlin Multiplatform Documentation

These apps are provided for you, but the library is not, because this article is exclusively focused on making a KMP library, and not the apps that use the library. But rest assured, you’ll acquire knowledge that’ll be valuable if you want to dive into Android development. It contains a boilerplate KMP project, which includes an empty KMP library. The starter project also includes an iOS app and an Android app that both display gifs from a list of 25 hardcoded “meh” URLs.

Key priorities

In the #compose-ios channel, you can find discussions about Compose Multiplatform for iOS. In #compose you can discuss general topics related to Compose Multiplatform and Jetpack Compose. We provide a number of different ways for you to get acquainted with the Alpha release of Compose Multiplatform for iOS, including sample applications and project templates.

iOS App with Kotlin/Native: Getting Started

The need for fast product delivery led us to experiment with a multiplatform architecture. The drawback here is that users cannot utilize all of their device’s functionality while using the app, such as contacts, calendars, the phone, and other assets, which results in a limited user experience. If your focus is Android or you need a single codebase for multiple platforms, pick Kotlin. If you’re building for iPhone or leveraging SwiftUI for sleek interfaces, go with Swift.

Why Swift Matters

• After approval, monitor user feedback, crash reports, and analytics for performance improvement.
• It enables developers to share UIs across Android, iOS, web, and desktop (via the JVM) and is based on Kotlin and Jetpack Compose.
• Another window will then appear to install the selected version of Android.
• The widespread pattern is used to create an instance of the Clazz class.
• The APIs in Compose Multiplatform are the same ones that have already been tried and tested in Jetpack Compose.

This is why the core-di module depends on all other modules and will also contain the Objective-C framework settings. Kotlin Multiplatform (KMP) is a key feature of the Kotlin language designed to facilitate code sharing between Android and iOS within the mobile development ecosystem. However, when focusing on the iOS side of development, there are specific challenges and considerations that can impact the overall experience for iOS developers. You’ve shared the business logic of your application, but you can also decide to share other layers of your application. For example, the ViewModel class code is almost the same for Android and iOS applications, and you can share it if your mobile applications should have the same presentation layer. Without considering these factors, it’s difficult to choose the framework for cross-platform mobile development that will best meet your specific needs.

• Learn to use Jetpack Room to share a data layer between Android and iOS in the next codelab.
• Launched by Appcelerator and later acquired by Axway, it allows developers to build iOS and Android apps with a single codebase using the Titanium SDK.
• You can find the source code on GitHub, which contains a minimal Kotlin Multiplatform and Compose Multiplatform template designed to build applications for both Android and iOS.
• First introduced in 2011 and later acquired by Microsoft in 2016, Xamarin allows developers to write shared code across iOS and Android with native performance using platform-specific APIs.
• Swift can’t use Kotlin modules directly and requires a compiled binary frameworkto be produced.

Bureau of Labor Statistics (2023), demand for iOS app developers is projected to grow by 25% by 2030, driven by rising enterprise investment in mobile applications and app monetization strategies. Compose Multiplatform builds on top of Jetpack Compose from Google, the recommended UI framework for modern Android development, which is 100% Kotlin. The team at JetBrains that develops Compose Multiplatform collaborates with Google and regularly upstreams changes to the Jetpack Compose repositories.

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Kotlin is a statically-typed programming language that bears a striking resemblance to Swift, and is 100% interoperable with Java. KMP is a feature of Kotlin which shares code between an app’s various platforms, so that each platform’s natively programmed UI calls into the common code. KMP is not the final step to accomplishing 100% shared code across all full-stack developer platforms, but it is the natural next step towards that goal. DRY (or Don’t Repeat Yourself) is one of the foundational principles of programming, but repeating lots of logic has been often necessary to develop an app running on multiple platforms. And more shared code across platforms means less repetition, which means better code.

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This familiarity makes it an accessible option for developers looking to explore cross-platform development while leveraging their existing skills. On the UI side, Compose Multiplatform, built on top of Kotlin Multiplatform, allows developers to share UI logic written in Jetpack Compose across various platforms. Essentially, Compose Multiplatform functions as a dedicated client, following a similar approach to Android’s Jetpack Compose UI, and is built on top of the existing Compose compiler and runtime system. This framework enables the creation of UIs for Android, iOS, desktop, and web, all using the same declarative Kotlin-based syntax. One of the major Kotlin Multiplatform use cases is sharing code between mobile platforms.

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Android apps use Java or Kotlin and allow more flexibility in design, app stores, and device compatibility. Run the app on different iOS simulators or real iPhones to test layout, speed, and stability. Use Xcode’s Senior iOS developer job built-in debugger and Instruments to analyse memory usage, performance bottlenecks, and network activity. Proper testing ensures a smooth UX and reduces the chance of rejection. Key features of Java include asynchronous programming, DOM manipulation, and wide browser and framework support. For projects prioritising speed, design fidelity, and deep system integration, native is preferred; for broader audience reach and faster deployment, cross-platform is ideal.

Amper is an experimental project configuration and build tool by JetBrains. In 2025, we will focus on making Amper fully suitable for multiplatform mobile app development for Android and iOS, with shared Compose Multiplatform UI. Kotlin also offers a number of features, such as null safety and higher-order functions, that can make your code more concise and easier to read. KMP works by using Kotlin to program business logic that is common to your app’s various platforms.