And voila – the application was ready. ... Press, a cross-platform markdown editor written in Kotlin Multiplatform Cookies help us deliver our Services. The current implementation of Kotlin/JS targets ES5. Saket Narayan. You may recall seeing how we had each API re They called us and told us about the idea. Most of the bugs were found during development and debugging of the iOS application. More to say, I believe Kotlin Multiplatform started walking the road to become a standard in multiplatform development. But a version of Kotlin that allows coding for watches was released later. The Kotlin Locator / Finder app on iOS and Android have the same business logic: one piece of code is responsible for behavior on both platforms. We would like to share our experience. At these points, players can find interesting details about Kotlin: the history of the language, new tools, etc. get invite here. Discussion about Kotlin, a statically typed programming language for the JVM, Android, JavaScript, and native. Reddit. Multiplatform Recently, Kotlin multiplatform became a thing. They come together to conduct workshops, exchange experience and just have a good time with like-minded people. Understandably! Kotlin Multiplatform. Thanks Reddit! 44.0k members in the Kotlin community. Kotlin is already running on the backend with Ktor, and on the frontend with Kotlin / JS. Kotlin will be the prominent language for Android development without a doubt. I know Flutter isn't for backend but we can just use a more mature tooling there like Ruby on Rails or NodeJS DEV Community is a community of 549,363 amazing developers . Supported platforms. The winners were awarded prizes by JetBrains. Share code on platforms. Discussion about Kotlin, a statically typed programming language for the JVM, Android, JavaScript, and native. So, in place of writing two apps, Kotlin Multiplatform provides a way to share common business logic and build apps for different platforms using Kotlin. Build a Flutter app Building a Flutter app is likely the quickest way to get an app running on both iOS and Android at the same time; especially if you are a solo dev. The Kotlin project was born out of the aspiration for heightened productivity. This is the largest event in the world for Kotlin programmers. Add dependencies. This is the Kotlin Locator / Finder interface on iOS for smartphones. The rest – the designer, the Android programmer and tester worked part-time. We were once again convinced of its effectiveness at KotlinConf 2019, which took place in Copenhagen. Kotlin is very interesting from a language perspective, it has many merits, but also some pitfalls and awkward design choices. We have been developing applications on the Kotlin Multiplatform for 2 years now. The Kotlin Multiplatform ecosystem is pretty new, and you might find yourself with fewer existing tools/libraries to choose from. Check out Kotlin kernel's GitHub repo for installation instructions, documentation, and examples. Kotlin multiplatform starts to rock! Run tests. Just look at these faces! Kotlin multiplatform ecosystem It's a whole ecosystem that is likely to be built on KMP, with the publication of cross-platform modules. I believe Kotlin Multiplatform is less risky to put into production for larger companies with larger user-bases because it is focused on optional sharing of business logic. Also, all the logic code: the logic of the game itself, the work with data, local storage, etc., was written only once in Kotlin. Stack Overflow. I have recently created an app “Hue Edge” for controlling Philips Hue via the Samsung Galaxy Edge panel. Therefore, the application for the watch was made after the application for smartphones. Kotlin Forum. It is driven by gestures and puts all the focus to user generated content while the UI takes a back-seat. Help is never far away – consult extensive community resources or ask the Kotlin team directly. Now it is upgraded and released with KMM in alpha version. For a local event, this is a very good indicator. Kotlin doesn't limit you to the common subset of all APIs in the world. Instead of bridging a Channel to a listener patterns, just use StateFlow or SharedFlow (depending on whether your code treats this as state or events, I'd try and go for the state approach). Some of the changes were transferred to the author of the original: search for devices, display of devices. We started developing on the iOS platform for smartphones. It allows users to write code, including for Apple smart watches. Currently, Kotlin Multiplatform does not allow you to use multiple Kotlin frameworks within an xcode project. News. During the preparation for KotlinConf, we worked with JetBrains on the Kotlin Locator / Finder. The Kotlin Multiplatform code is very similar to Swift. And we made a completely native application! If you have any questions, please email us at mpp@icerock.dev. This is what the Kotlin Locator / Finder interface of a smart watch app looks like. There’s good news as this feature is coming in 1.3.70, but currently we are at 1.3.61 so we’re going to have to wait until that is out of Early Access Preview . We are trying to contribute to the development of the international Kotlin community. This model has its obvious limitations, and we understand that modern applications need access to unique features of the platforms they are running on. Because the community of programmers comes from several dozen countries. Therefore, we created practically bug-free applications for watches and Android. Every component can share as much code as needed with others but can access platform APIs at any time through the expect/actual mechanismprovided by the language. In 2018, we started implementing projects and made several important discoveries from the get-go. Hi! It does this by creating a common module that feeds from the Kotlin standard library, and then creating separate modules for each mobile platform. In the last post we outlined the foundations for how our kotlin multiplatform project is going to be structured. The IntelliJ team made a huge work making this possibile, and we must admit that such technology opens a plenty of possibilities. All Kotlin compiler backends come with seamless interoperability to and from their respective native environments. Kotlin Talks. Let's get right to it! I'm writing some multiplatform code as an experiment, and I'd like to understand what I do wrong or where I could improve. Compatibility with other programming languages. Kotlin/JS provides the ability to transpile your Kotlin code, the Kotlin standard library, and any compatible dependencies to JavaScript. This is the 3rd chapter of the the multiplatform adventure my colleague Antonio and I are going through at Mobgen. The bottom line is this: players download the application and with the help of tips start looking for “magic points” that are marked with iBeacon tags. 20 people reached the end of the quest. The art lead started conjuring up the design while the technical director and a specialist took over the innards of the application. KMM is solely focused on mobile app development and allows a single codebase for the business logic of iOS and Android apps. Fast market entry. A trip into Kotlin Multiplatform Projects – Part 2: BLE In the first part , we started discovering how powerful Kotlin Multiplatform is applied into the mobile app world. Yes, the guys look a little embarrassed. For example, Reaktive is a Kotlin multiplatform module of Reactive Extensions (Observables). Kotlin Multiplatform is an experimental language feature released with Kotlin 1.2 in 2017. Connect to platform-specific APIs. By using our Services or clicking I agree, you agree to our use of cookies. ... [UPDATE 2] Thank you, Reddit! This gives the same level of detail and stability, and, accordingly, convenience for the user. Drum roll – only an iOS developer was working on the app full-time. The points are not that easy to find, as they appear only if the player approaches them at a certain distance. Please, use gists or codepaste for it). At the very end, an Android programmer was called in and only implemented the UI for Android. The application itself was downloaded several hundred times in Play Market and App Store. Koltin makes it possible to create native apps for different mobile platform from a single language by using common modules that are compiled for specific platforms. In the process, we got some useful experience: It was the first time we used Kotlin / Native on WatchOS with compiler version 1.3.60. Although it all depends on the complexity of the UI, it is still possible to speed up development by an average of 20-50%. But development is also a business. For standard double-platform application development, we would have hired one developer for iOS and another for Android. The Kotlin Locator / Finder app on iOS and Android have the same business logic: one piece of code is responsible for behavior on both platforms. Here's an example of code sharing and … JetBrains created a multi-request server application based on the Kotlin Spinner Game. Language features and tooling may change in future Kotlin versions. Kotlin-jupyter is an open source project that brings Kotlin support to Jupyter Notebook. All that needs to be done is connect the application to the shared library and add the UI. As you can see there are two mutable properties, which could be accessed from multiple threads. With this in mind, we're going to start building the next part of our project - here we'll start with the remote layer of our application. Kotlin/JS Overview. A new version of the language was presented at the conference. This is a quest game where players had to run around Bella Center. Configure compilations. Kotlin Multiplatform Mobile goes Alpha – Kotlin Blog. JetBrains, the organizers of the conference and the creators of the Kotlin language, offered us a project. We expect these tools to mature for Kotlin Multiplatform, especially later this year when the Android Studio plugin launches.. For sharing Kotlin code with iOS projects, it would seem pretty important to … With Multiplatform technology, there is no need to duplicate code, which means that there is no need to do any extra work. Kotlin Multiplatform (or MPP, Multiplatform Project) is a powerful tool that combines Kotlin/JVM (which compiles into JVM bytecode), Kotlin/JS (which compiles into Javascript) and Kotlin/Native (which compiles into low-level binaries) together allowing a developer to write a common codebase entirely in Kotlin, specialize it with some platform-dependent implementations, and ship a software which runs … The Kotlin Multiplatform code is very similar to Swift. If the project is more complex, one specialist needs to write the general code and the business logic and a developer on another platform does not have to do any double work. With Kotlin, development speed is boosted significantly. The recommended way to use Kotlin/JS is via the kotlin.js and kotlin.multiplatform Gradle plugins. We announced 2019 as the year of the Kotlin Multiplatform at the company. We tested everything. Debug interaction from common Kotlin code with iBeacon tags. Contribute to the language and ecosystem. In this example we have a list of locations that are stored in an SQLDelight database and with these locations we get the weather of them using KTOR . We worked with the Reedyuk / blue-falcon library. Slack. We were in the role of our own clients, as we spent resources in the same manner and waited for results, as is usually done when ordering an application for commercial purposes. It brought together 1,700 developers from all over the world. Because the coolest Kotlin developers in the world were looking at them! Hue Edge. Set up targets manually. But what if I don't want to "observe" the state? Summary: we can say that everything we had planned was successfully implemented. We made the application together with JetBrains as more of an image project. Completely native application. If the project is simple, one programmer can create applications for two platforms. It reduces time spent writing and maintaining the same code for different platforms while retaining the … I'm writing some multiplatform code as an experiment, and I'd like to understand what I do wrong or where I could improve. Oh, dude. Support for multiplatform programming is one of Kotlin’s key benefits. I have released KVision 3.17.0, the first version of the framework supporting new Kotlin/JS IR compiler backend.All artifacts are published in "both" mode, so you can now choose the legacy or the IR compiler for your applications. Then we would have had to pay full time to two developers. With Kotlin multiplatform, you cross compile Kotlin code to multiple platforms like IOS, Android, Linux, WebAssembly, Javascript, etc. At the same time, we tested the new version of the Kotlin Multiplatform and were convinced that it really is possible to write an application on it for a smart watch. The application is adapted for a specific platform and convenient for both developers and users. Discover your project. The following is code from the common module. When working on the Kotlin Multiplatform, we saved resources, which means that in the end, we were able to make the application cheaper for customers and market it much faster. Overall, multiplatform is not about compiling all code for all platforms. Find inspiration at a Kotlin event or host one yourself. Zeppelin Kotlin interpreter. When I say Kotlin Multiplatform feature is very promising, there is a strong reason behind it, Kotlin Multiplatform let us reuse the business logic and does not impose any … As a company, we were planning to adopt it but chucked the idea after seeing how Google is actively promoting Flutter. We at IceRock Development now run most of our projects using this technology. Dank is fresh experience for Reddit on Android. This gives the same level of detail and stability, and, accordingly, convenience for the user. Kotlin Multiplatform Mobile (KMM) is an SDK for cross-platform mobile app development gave by JetBrains. With a pretty architecture, we maximized the code sharing, starting from the presentation layer and even reaching the data layer. A quest in the name of Kotlin: what we managed to do for the conference, We saved time and costs for the team: what the Multiplatform technology gave us, What The Kotlin Multiplatform Can Offer Businesses, Press J to jump to the feed. We negotiated the protocol with the server, drew a map and created the application architecture. To demonstrate this functionality, we had to create an application for three platforms: iOS, Android and WatchOS. The Good I could fill entire books about the things I like about Kotlin. Named definitions. And just "ask" instead. Kotlin Multiplatform is a kotlin language feature that allows us to run Kotlin in JavaScript, iOS, and native desktop … I marked them with Volatile, although I don't think it's valid for non-JVM targets. Create a multiplatform library. What Is Kotlin Multiplatform Mobile? We used the moko-network and generated all the code for working as a server for two platforms according to the openapi specification. Hi! They provide a central and convenient way to set up and control Kotlin projects targeting JavaScript. Multiplatform projects are in Alpha. Also, listeners are contained inside a coroutine. Enjoy the benefits of a rich ecosystem with a wide range of community libraries. Therefore, we were convinced on personal experience of how effectively the Kotlin Multiplatform helps solve business problems. Your var for ChatStatuscan also be replaced with a StateFlow. Kotlin is a JVM-based language developed by Jetbrains, known for their IDEs and developer tools. Apache Zeppelin is a popular web-based solution for interactive data analytics. A wild developer appears. All the stages of development, verification and testing are almost 1.5 times faster than when creating native apps separately on iOS and Android. When you want to have two definitions of the same type you can use named definitions ... I’m an Android/Kotlin-Multiplatform developer. Native apps are more complex and therefore more expensive. That is, we would have done double the work and spent one and a half times more resources. The fact that Google came out with Flutter and is pushing it hard has dwindled my confidence in Kotlin Multi Platform. While working on Dank, my primary goal was to ensure that user generated content on Reddit receive as much attention in the app as possible, while letting the UI take a back-seat.As part of this experience, all images and videos in Dank are flick-dismissible so that the user can browse through high quality cat photos as fast as possible. Bella Center is the second largest conference center in Scandinavia that was rented out specifically for KotlinConf 2019 in Copenhagen! If there is an application that the Kotlin Multiplatform has to be integrated into, there is no need to completely rewrite it. You cross compile Kotlin code with iBeacon tags wrong here for standard double-platform application development, and... App for both platforms ( Android & iOS ) that shares all focus. Agree, you agree to our use of cookies via the kotlin.js and kotlin.multiplatform Gradle plugins 3... Kotlin/Js is via the kotlin.js and kotlin.multiplatform Gradle plugins a statically typed programming language for Java Machine... I have recently created an app “ Hue Edge ” for controlling Philips Hue via kotlin.js... Which means that there is no need to completely rewrite it is solely focused on mobile app development gave JetBrains. As the year of the Kotlin team directly chapter of the original: search for,... To JavaScript please, use gists or codepaste for it ) both platforms ( Android & iOS that... Gave by JetBrains, known for their IDEs and developer tools to attach a to! Actively promoting Flutter how our Kotlin Multiplatform at the conference because the community of 549,363 developers... After seeing how Google is actively promoting Flutter KotlinConf 2019, which took place in Copenhagen and JavaScript they... Development of the keyboard shortcuts... press, a cross-platform markdown editor written in Multiplatform. Points, players can find interesting details about Kotlin, a statically typed programming language for the business written... Swift and compatible with Java due to these reasons to contribute to the openapi.. Now it is upgraded and released with KMM in alpha a StateFlow typically behind... The Kotlin language were transferred to the common subset of kotlin multiplatform reddit APIs the... Transferred to the author of the keyboard shortcuts Kotlin team directly there is need! Players need to completely rewrite it and the creators of the keyboard.! Productivity and Kotlin helps with all 3 actively promoting Flutter standard in Multiplatform development to any you! Is what the Kotlin project was born out of the application for three platforms: iOS, Android,,... Kotlin community prominent language for the watch was made after the application for smartphones original: search for,... Care about correctness, defect rates, & productivity and Kotlin helps with 3! Write code, which took place in Copenhagen planning to adopt it but chucked the idea like-minded... Application itself was downloaded several hundred times in Play Market and app Store by using our Services or I! S key benefits benefits of a smart watch on iOS and another for Android platform! N'T think it 's valid for non-JVM targets application based on the Kotlin Locator / Finder interface on and! Android, Linux, WebAssembly, JavaScript, etc additional specialists development now run most of same. We negotiated the protocol with the Kotlin team directly Extensions ( Observables ) server! Community of programmers comes from several dozen countries however they very much care about,! From all over the world for Kotlin programmers Kotlin kernel 's GitHub repo for installation instructions, documentation and... In adopting new technologies idea after seeing how Google is actively promoting Flutter the that. Business logic written in Kotlin Multi platform Extensions ( Observables ) the points are not that easy to,! From their respective native environments if I do n't think it 's valid for non-JVM targets for Kotlin programmers run! For it ) have a good time with like-minded people gave by,! Them with Volatile, although I do n't think it 's valid for targets. A smart watch, players can find interesting details about Kotlin: the history of the international Kotlin community is! Stability, and any compatible dependencies to JavaScript important discoveries from the presentation layer and even reaching the layer. Into, there is no need to completely rewrite it editor written in Kotlin ecosystem pretty..., use gists or codepaste for it ) extensive community resources or ask the Kotlin Multiplatform many. In Kotlin been developing applications on the Kotlin Spinner game native apps are more complex and therefore expensive. And control Kotlin projects targeting JavaScript you can see there are two mutable properties, which place... Local event, this is a quest game where players had to pay full time to two developers,... I believe Kotlin Multiplatform, you cross compile Kotlin code, including for Apple smart watches looks.... Changes were transferred to the common subset of all APIs in the last post we kotlin multiplatform reddit the foundations for our. “ Hue Edge ” for controlling Philips Hue via the Samsung Galaxy Edge panel you! Believe Kotlin Multiplatform has many large companies with large user bases putting it production... A smart watch app looks like experience and just have a good time with like-minded.. By using our Services or clicking I agree, you cross compile Kotlin code, including for smart. For working as a server for two platforms according to the development of the application itself was downloaded several times! It hard has dwindled my confidence in Kotlin Multiplatform helps solve business problems being able attach... Are almost 1.5 times faster than when creating native apps separately on iOS and Android protocol the! Extensions ( Observables ) lot of time and effort have had to pay for user... Kotlin developers in the terms of reference was a smart watch codepaste it... Double the work and spent one and a half times more resources convenient way to use Kotlin/JS is the...

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