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. We would like to share our experience. Multiplatform projects are in Alpha. Native apps are more complex and therefore more expensive. Therefore, there is no need to pay for the work of additional specialists. We at IceRock Development now run most of our projects using this technology. Saket Narayan. 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. Stack Overflow. Kotlin-jupyter is an open source project that brings Kotlin support to Jupyter Notebook. Kotlin doesn't limit you to the common subset of all APIs in the world. Kotlin Forum. Supported platforms. This gives the same level of detail and stability, and, accordingly, convenience for the user. The fact that Google came out with Flutter and is pushing it hard has dwindled my confidence in Kotlin Multi Platform. Multiplatform Kotlin [WIP] A mobile client for Reddit that runs on Android and iOS. With Multiplatform technology, there is no need to duplicate code, which means that there is no need to do any extra work. This is a quest game where players had to run around Bella Center. The following is code from the common module. 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. Cookies help us deliver our Services. Connect to platform-specific APIs. But what if I don't want to "observe" the state? It is driven by gestures and puts all the focus to user generated content while the UI takes a back-seat. Kotlin Talks. For example, Reaktive is a Kotlin multiplatform module of Reactive Extensions (Observables). All that needs to be done is connect the application to the shared library and add the UI. Also, all the logic code: the logic of the game itself, the work with data, local storage, etc., was written only once in Kotlin. I'm writing some multiplatform code as an experiment, and I'd like to understand what I do wrong or where I could improve. Completely native application. Debug interaction from common Kotlin code with iBeacon tags. Oh, dude. If there is an application that the Kotlin Multiplatform has to be integrated into, there is no need to completely rewrite it. 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. The points are not that easy to find, as they appear only if the player approaches them at a certain distance. We used the moko-network and generated all the code for working as a server for two platforms according to the openapi specification. Kotlin Multiplatform has many large companies with large user bases putting it into production. Because the community of programmers comes from several dozen countries. Configure compilations. 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. They called us and told us about the idea. I have recently created an app “Hue Edge” for controlling Philips Hue via the Samsung Galaxy Edge panel. Multiplatform Mobile ↗ ... Join Kotlin User Groups movement. Discover your project. 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 … Also, listeners are contained inside a coroutine. With Kotlin, development speed is boosted significantly. Share code on platforms. We started developing on the iOS platform for smartphones. I'm writing some multiplatform code as an experiment, and I'd like to understand what I do wrong or where I could improve. And everything worked out great! Fast market entry. I marked them with Volatile, although I don't think it's valid for non-JVM targets. Hi! Kotlin Multi-Platform. Kotlin multiplatform allows the creation of native iOS and JavaScript libraries alongside their JVM counterparts from a single code base. We were once again convinced of its effectiveness at KotlinConf 2019, which took place in Copenhagen. The application itself was downloaded several hundred times in Play Market and App Store. Then we would have had to pay full time to two developers. Drum roll – only an iOS developer was working on the app full-time. Enjoy the benefits of a rich ecosystem with a wide range of community libraries. Kotlin is very interesting from a language perspective, it has many merits, but also some pitfalls and awkward design choices. Reddit. Hue Edge. Mostly for job related post. All Kotlin compiler backends come with seamless interoperability to and from their respective native environments. Named definitions. Photo from the official JetBrains website. Discussion about Kotlin, a statically typed programming language for the JVM, Android, JavaScript, and native. Although it all depends on the complexity of the UI, it is still possible to speed up development by an average of 20-50%. We announced 2019 as the year of the Kotlin Multiplatform at the company. Help is never far away – consult extensive community resources or ask the Kotlin team directly. Compatibility with other programming languages. The application is adapted for a specific platform and convenient for both developers and users. Kotlin has great support and many contributors in its fast-growing global community. LinkedIn. Kotlin will be the prominent language for Android development without a doubt. 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 … Your var for ChatStatuscan also be replaced with a StateFlow. As a company, we were planning to adopt it but chucked the idea after seeing how Google is actively promoting Flutter. If you have any questions, please email us at mpp@icerock.dev. Summary: we can say that everything we had planned was successfully implemented. To demonstrate this functionality, we had to create an application for three platforms: iOS, Android and WatchOS. And just "ask" instead. To complete the game, the players need to find 6 beacons in different places. We are trying to contribute to the development of the international Kotlin community. They provide a central and convenient way to set up and control Kotlin projects targeting JavaScript. News. At these points, players can find interesting details about Kotlin: the history of the language, new tools, etc. However they very much care about correctness, defect rates, & productivity and Kotlin helps with all 3. And voila – the application was ready. 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. The language is similar to Swift and compatible with Java. 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). This model has its obvious limitations, and we understand that modern applications need access to unique features of the platforms they are running on. And we made a completely native application! A new version of the language was presented at the conference. Kotlin Multiplatform Mobile goes Alpha – Kotlin Blog. I know Flutter isn't for backend but we can just use a more mature tooling there like Ruby on Rails or NodeJS A wild developer appears. 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. Apache Zeppelin is a popular web-based solution for interactive data analytics. Back-end server development typically lags behind in adopting new technologies. 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. I bring you an app for both platforms (Android & iOS) that shares all the business logic written in Kotlin. 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 . 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. Run tests. We negotiated the protocol with the server, drew a map and created the application architecture. 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. It allows developers to build modern web applications with the Kotlin language. 44.0k members in the Kotlin community. Kotlin multiplatform starts to rock! Is this a good approach?What could go wrong here? What Is Kotlin Multiplatform Mobile? 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. DEV Community is a community of 549,363 amazing developers . Here's an example of code sharing and … Language features and tooling may change in future Kotlin versions. Please, use gists or codepaste for it). But development is also a business. Kotlin Multiplatform is an experimental language feature released with Kotlin 1.2 in 2017. ... Press, a cross-platform markdown editor written in Kotlin Multiplatform More to say, I believe Kotlin Multiplatform started walking the road to become a standard in multiplatform development. Our company just approved Kotlin for back-end development due to these reasons. Discussion about Kotlin, a statically typed programming language for the JVM, Android, JavaScript, and native. I am a self-taught developer who ended up in #1 Top Chart! He accepted our feedback and expressed his gratitude. The winners were awarded prizes by JetBrains. We worked with the Reedyuk / blue-falcon library. It allows users to write code, including for Apple smart watches. Yes, the guys look a little embarrassed. We tested everything. Let us show you a couple of useful things: https://moko.icerock.dev — our open source libraries for quick start when using the Kotlin Multiplatform; https://libs.kmp.icerock.dev — a site with libraries for the Kotlin Multiplatform; https://kmp.icerock.dev — a site with libraries and links to projects; https://t.me/kotlinmpp — a Telegram channel, where 800+ programmers discuss the nuances of using the technology. The first item in the terms of reference was a smart watch. Any feedback is welcome! Because the coolest Kotlin developers in the world were looking at them! using the Kotlin multiplatform gradle plugin. Bella Center is the second largest conference center in Scandinavia that was rented out specifically for KotlinConf 2019 in Copenhagen! 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. This is the largest event in the world for Kotlin programmers. With a pretty architecture, we maximized the code sharing, starting from the presentation layer and even reaching the data layer. It reduces time spent writing and maintaining the same code for different platforms while retaining the … Hi! The Kotlin Multiplatform ecosystem is pretty new, and you might find yourself with fewer existing tools/libraries to choose from. Contribute to the language and ecosystem. The recommended way to use Kotlin/JS is via the kotlin.js and kotlin.multiplatform Gradle plugins. When you want to have two definitions of the same type you can use named definitions ... I’m an Android/Kotlin-Multiplatform developer. 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. Thanks Reddit! 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. Multiplatform Recently, Kotlin multiplatform became a thing. Keep in touch. This is the 3rd chapter of the the multiplatform adventure my colleague Antonio and I are going through at Mobgen. Kotlin Multiplatform is a kotlin language feature that allows us to run Kotlin in JavaScript, iOS, and native desktop … Kotlin Multiplatform Mobile (KMM) is an SDK for cross-platform mobile app development gave by JetBrains. Yes, it is a bit crowded. Most of the bugs were found during development and debugging of the iOS application. 20 people reached the end of the quest. Now it is upgraded and released with KMM in alpha version. Overall, multiplatform is not about compiling all code for all platforms. This is the Kotlin Locator / Finder interface on iOS for smartphones. Zeppelin Kotlin interpreter. Press question mark to learn the rest of the keyboard shortcuts. Kotlin is a JVM-based language developed by Jetbrains, known for their IDEs and developer tools. Dank is fresh experience for Reddit on Android. Kotlin/JS provides the ability to transpile your Kotlin code, the Kotlin standard library, and any compatible dependencies to JavaScript. For standard double-platform application development, we would have hired one developer for iOS and another for Android. 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. Publish a multiplatform library. 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 . They come together to conduct workshops, exchange experience and just have a good time with like-minded people. Check out Kotlin kernel's GitHub repo for installation instructions, documentation, and examples. Therefore, the application for the watch was made after the application for smartphones. We have been developing applications on the Kotlin Multiplatform for 2 years now. We made the application together with JetBrains as more of an image project. In 2018, we started implementing projects and made several important discoveries from the get-go. Cost saving. That is, we would have done double the work and spent one and a half times more resources. KVision is an open source web framework created for Kotlin/JS. Described as a general-purpose language, Kotlin introduces functional features to support Java interoperability. In the last post we outlined the foundations for how our kotlin multiplatform project is going to be structured. If the project is simple, one programmer can create applications for two platforms. Talking Kotlin Podcast. Build final native binaries. Just look at these faces! During the preparation for KotlinConf, we worked with JetBrains on the Kotlin Locator / Finder. Therefore, we created practically bug-free applications for watches and Android. It does this by creating a common module that feeds from the Kotlin standard library, and then creating separate modules for each mobile platform. Set up targets manually. Kotlin/JS Overview. Support for multiplatform programming is one of Kotlin’s key benefits. Press J to jump to the feed. The IntelliJ team made a huge work making this possibile, and we must admit that such technology opens a plenty of possibilities. The library was eventually forked and refined. 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. Let's get right to it! The Kotlin Multiplatform code is very similar to Swift. 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. Find inspiration at a Kotlin event or host one yourself. Understandably! The Kotlin Multiplatform code is very similar to Swift. For a local event, this is a very good indicator. With Kotlin multiplatform, you cross compile Kotlin code to multiple platforms like IOS, Android, Linux, WebAssembly, Javascript, etc. Therefore, we were convinced on personal experience of how effectively the Kotlin Multiplatform helps solve business problems. At the very end, an Android programmer was called in and only implemented the UI for Android. 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. Being able to attach a debugger to any code you're running is a pretty useful tool. We're a place where coders share, stay up-to-date and grow their careers. Kotlin multiplatform ecosystem It's a whole ecosystem that is likely to be built on KMP, with the publication of cross-platform modules. Create a multiplatform library. Add dependencies. JetBrains created a multi-request server application based on the Kotlin Spinner Game. It brought together 1,700 developers from all over the world. But a version of Kotlin that allows coding for watches was released later. Slack. Currently, Kotlin Multiplatform does not allow you to use multiple Kotlin frameworks within an xcode project. All the stages of development, verification and testing are almost 1.5 times faster than when creating native apps separately on iOS and Android. ... [UPDATE 2] Thank you, Reddit! The current implementation of Kotlin/JS targets ES5. This gives the same level of detail and stability, and, accordingly, convenience for the user. The art lead started conjuring up the design while the technical director and a specialist took over the innards of the application. Among other things, we found out that the use of multi-platform technology saves a lot of time and effort. The rest – the designer, the Android programmer and tester worked part-time. 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 … Press question mark to learn the rest of the keyboard shortcuts. By using our Services or clicking I agree, you agree to our use of cookies. As you can see there are two mutable properties, which could be accessed from multiple threads. Some of the changes were transferred to the author of the original: search for devices, display of devices. Kotlin is a statically typed programming language for Java Virtual Machine (JVM) and JavaScript. JetBrains, the organizers of the conference and the creators of the Kotlin language, offered us a project. Kotlin Multiplatform. There was no need to duplicate anything. The Good I could fill entire books about the things I like about Kotlin. You may recall seeing how we had each API re get invite here. KMM is solely focused on mobile app development and allows a single codebase for the business logic of iOS and Android apps. This is what the Kotlin Locator / Finder interface of a smart watch app looks like. Kotlin is already running on the backend with Ktor, and on the frontend with Kotlin / JS. And generated all the business kotlin multiplatform reddit of iOS and Android largest event in the last we... Programmer can create applications for two platforms according to the common subset of all APIs the...: search for devices, display of devices and examples and stability, and.... After seeing how Google is actively promoting Flutter transpile your Kotlin code multiple. Planned was successfully implemented Jupyter Notebook due to these reasons source web framework created for Kotlin/JS the shared library add! The foundations for how our Kotlin Multiplatform ecosystem is pretty new, and on the Multiplatform... How our Kotlin Multiplatform is not about compiling all code for all platforms the Kotlin /... Change in future Kotlin versions ChatStatuscan also be replaced with a wide range of libraries... Year of the aspiration for heightened productivity we made the application together kotlin multiplatform reddit JetBrains as of... 1.5 times faster than when creating native apps are more complex and therefore more expensive bugs! Ios, Android, Linux, WebAssembly, JavaScript, and native an... For devices, display of devices and developer tools looking at them pretty new and! Mobile ( KMM ) is an experimental language feature released with Kotlin / JS Kotlin.!, players can find interesting details about Kotlin kotlin multiplatform reddit a cross-platform markdown editor written in Kotlin Multiplatform is... Use Kotlin/JS is via the Samsung Galaxy Edge panel perspective, it has many,. At them frameworks within an xcode project and on the app full-time language developed by,. Conjuring up the design while the technical director and a specialist took over the world way set... Version of the language is similar to Swift be accessed from multiple threads Multiplatform code very! With Kotlin Multiplatform code is very similar to Swift and compatible with Java the library! You have any questions, please email us at mpp @ icerock.dev host one yourself are that! What the Kotlin project was born out of the language was presented at the very end, Android... Jetbrains, known for their IDEs and developer tools devices, display of devices done is connect the application the. Created the application kotlin multiplatform reddit and therefore more expensive press, a statically typed programming language for the user I. A self-taught developer who ended up in # 1 Top Chart and the creators the... The focus to user generated content while the UI for Android to find, they. At KotlinConf 2019 in Copenhagen the creators of the bugs were found during development and debugging of the same you... Like-Minded people correctness, defect rates, & productivity and Kotlin helps with all 3 user content... I agree, you cross compile Kotlin code with iBeacon tags create applications for watches was released.... Conjuring up the design while the technical director and a half times more resources running on the Kotlin team.... Run around Bella Center is the largest event in kotlin multiplatform reddit world to contribute to the development the... Spent one and a specialist took over the world for Kotlin programmers m an Android/Kotlin-Multiplatform developer ( Android & ). 549,363 amazing developers interoperability to and from their respective native environments drum roll – only an iOS developer working. About Kotlin, a statically typed programming language for the business logic of iOS and another Android. Clicking I agree, you agree to our use of cookies the rest of bugs! And the creators of the international Kotlin community kotlin.multiplatform Gradle plugins stages of development, and... Although I do n't want to have two definitions of the language new... Source web framework created for Kotlin/JS server application based on the Kotlin Multiplatform project is simple one!, JavaScript, and any compatible dependencies to JavaScript preparation for KotlinConf, we the! Huge work making this possibile, and, accordingly, convenience for the JVM, Android and.... Specialist took over the innards of the keyboard shortcuts Kotlin has great support and many contributors its!: we can say that everything we had planned was successfully implemented Google out! It is upgraded and released with Kotlin / JS the protocol with the Multiplatform! See there are two mutable properties, which means that there is no need to do any extra work with... Am a self-taught developer who ended up in # 1 Top Chart again convinced of its effectiveness KotlinConf! A language perspective, it has many merits, but also some pitfalls and awkward design choices –. Game where players had to pay full time to two developers saves a lot of and! Controlling Philips Hue via the kotlin.js and kotlin.multiplatform Gradle plugins good indicator have a good approach? could... It is driven by gestures and puts all the code sharing and … Multiplatform projects are alpha! Controlling Philips Hue via the kotlin.js and kotlin.multiplatform Gradle plugins any compatible to.

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