After a little Google-ing, everything was clear. As mentioned in the limitations, you must import your project from the Gradle model to get content-assist and refactoring tools for Kotlin DSL scripts in IntelliJ IDEA. Featured on Meta New Feature: Table Support. When mixing languages in your build logic, you may have to cross language boundaries. Open an issue on the Gradle issue tracker, including as much detail as you can. If some plugin makes heavy use of Groovy metaprogramming, then using it from Kotlin or Java or any statically-compiled language can be very cumbersome. That also applies to the settings file — for example settings.gradle.kts — and initialization scripts. Apply the Kotlin Gradle plugin by using the Gradle plugins DSL.. Sets up Kotlin’s Java interoperability to strictly follow JSR-305 annotations for increased null safety. By entering your email, you agree to our Terms and Privacy Policy, including receipt of emails. Open source has a … This will cause the Gradle Daemon to log extra information in its log file located in $HOME/.gradle/daemon. Kotlin DSL brings the simplicity of the Kotlin language syntax and rich API set right into the script files on top of that code completion makes it perfect to work with Gradle script files. If you can’t find a type-safe accessor, fall back to using the normal API for the corresponding types. The following sample is exactly the same except that is uses the apply() method to apply the plugin. Note how the root build script only declares the community plugins as the Java Library Plugin is tied to the version of Gradle you are using: If your build requires additional plugin repositories on top of the Gradle Plugin Portal, you should declare them in the pluginManagement {} block in your settings.gradle.kts file, like so: Plugins fetched from a source other than the Gradle Plugin Portal can only be declared via the plugins {} block if they are published with their plugin marker artifacts. From version 5.1 onwards, the log directory is cleaned up automatically. There are situations that require you to interact with a Gradle plugin that uses convention objects on other types. E.g. You accomplish both steps by configuring a pluginManagement {} block in the build’s settings script. Here’s an example that defines a new myNewTaskProperty on the test task and then uses that property to initialize another task: If you’re happy to use eager configuration rather than the configuration avoidance APIs, you could use a single, "global" property for the report type, like this: There is one last syntax for extra properties that we should cover, one that treats extra as a map. When configuring several elements of a container one can group interactions in a block in order to avoid repeating the container’s name on each interaction. This will happen both at the top level of your build scripts — most plugin extensions are added to the Project object — and within the blocks that configure an extension. If the above doesn’t work and you suspect an issue with the Kotlin DSL script editor, you can: Check the logs in one of these locations: $HOME/Library/Logs/gradle-kotlin-dsl on Mac OS X, $HOME/AppData/Local/gradle-kotlin-dsl/log on Windows. Step by step Android groovy to kotlin DSL. Playing Gradle Script with Kotlin DSL in Android Project. There’s been quite some months already since Gradle announced that they were working on supporting Kotlin to write Gradle Scripts, by using a version of the language that has been recently revamped to Kotlin DSL.. At the beginning things where quite complicated, but nowadays, with latest versions of Kotlin DSL … And as a last resort, you may be able to view the plugin’s source code to find out what it does, but that shouldn’t be necessary in the majority of cases. Changing something in the buildSrc directory also has an impact as it invalidates build-script caching. Kotlin DSL — Better player in town. Most importantly, the Kotlin Gradle plugin for JVM applications is included, which we can do with the DSL-specific function kotlin (module: String), that takes its module argument and appends it to "org.jetbrains.kotlin. You can discover what extensions and conventions are available either by looking at the documentation for the applied plugins or by running gradle kotlinDslAccessorsReport, which prints the Kotlin code necessary to access the model elements contributed by all the applied plugins. The build script can not use type-safe accessors in this case because the apply() call happens in the body of the build script. The Overflow Blog Ciao Winter Bash 2020! You must instead fall back to declaring your plugin dependencies using the buildscript {} block in the root project build script. Applying the Kotlin DSL Plugin to a, Example 17. To do that, you need to know the names and/or types of the configured model elements. To call a Groovy function with named arguments from Kotlin, you need to pass a Map, as shown in this example: To call a Groovy function with default arguments from Kotlin, always pass values for all the parameters. The main difference is that the subprojects' build scripts in the above sample declare their plugins using the plugins {} block. As seen above, the Kotlin DSL provides accessors only for convention objects on Project. However, this approach does mean that you can use type-safe accessors for any model elements that are contributed by plugins that are applied by parent projects. Kotlin DSL is fully supported in Intellij IDEA and Android Studio. We are also using standard APIs instead of type-safe accessors to configure tasks, extensions and conventions — an approach that we discussed in more detail elsewhere. You can bring the elegance and type-safety of Kotlin to your automation. Taking this approach means that you won’t be able to use type-safe accessors for model elements contributed by the plugins. The Using Gradle plugins chapter explains how you can declare plugins in the root project build script with a version and then apply them to the appropriate subprojects' build scripts. Apply the Kotlin Gradle plugin by using the Gradle plugins DSL.. Please avoid using convention objects when writing new plugins. After a lot of pain trying to migrate from Gradle's Groovy to Kotlin DSL on Android Studio, I developed this tool to solve most migration issues and … If you need or want to eagerly configure or register container elements, simply replace named() with getByName() and register() with create(). Saran saya, gunakan Gradle versi 5.0 karena sudah mendukung Kotlin DSL 1.0.. Di sini kita akan fokus pada 3 (tiga) file yang terdapat pada proyek tersebut yaitu settings.gradle, build.gradle (project), dan build.gradle (app).Ketiga file tersebut merupakan Gradle scripts yang secara default dituliskan dengan Groovy. Example 1. For IDE problems outside of the Kotlin DSL script editor, please open issues in the corresponding IDE’s issue tracker: Lastly, if you face problems with Gradle itself or with the Kotlin DSL, please open issues on the Gradle issue tracker. org.gradle.api.artifacts.dsl. Multi-module Android project with Kotlin DSL for Gradle - app\build.gradle.kts It automates the publication of the metadata necessary to make your plugins usable with the plugins {} block. In addition, IntelliJ IDEA and Android Studio might spawn up to 3 Gradle daemons when editing Gradle scripts — one for each type of script: build scripts, settings files and initialization scripts. The Kotlin reference documentation and Kotlin Koans will help you to learn the basics. without the package name part. These limitations will be removed in a future Gradle release. So the Kotlin code looks like this: Gradle’s Kotlin DSL provides an alternative syntax to the traditional Groovy DSL with an enhanced editing experience in supported IDEs, with superior content assist, refactoring, documentation, and more. We will use the lates Gradle version, as it includes the latest Kotlin DSL version. Note that you can leverage the type-safe accessors described in another section if you are configuring existing elements on supported containers. As long as the combination is compatible everything should work. As the following sample shows for the sourceSets {} and java {} blocks from the original example build script, you can use the configure() function with the corresponding type to do that: Note that sourceSets is a Gradle extension on Project of type SourceSetContainer and java is an extension on Project of type JavaPluginExtension. Initialization scripts, settings scripts, script plugins do not. We look at each of those ways next, using the tasks container as an example. If you run into trouble or discover a suspected bug, please report the issue in the Gradle issue tracker. The same mostly applies to interoperability with Groovy code. The Gradle Kotlin DSL Primer user manual chapter is the best place to start learning more: it will cover all the basics and answer most of your questions. You can use the official Kotlin Gradle Plugin from JetBrains to compile your Kotlin code to target JVM, Android, and JS. May 15, ... One of them is support for writing domain-specific language or DSL. Create a file, fabric.gradle , in the module where you apply the io.fabric plugin. This means that you can use type-safe accessors for the model elements that they contribute. The plugin achieves this by doing the following: Applies the Kotlin Plugin, which adds support for compiling Kotlin source files. The Kotlin DSL allows you to access project properties by binding them via Kotlin delegated properties. If you encounter the same problem from the command line, then the issue is with the build rather than the IDE integration. Using the plugins DSL: plugins { id ( "org.gradle.kotlin.kotlin-dsl") version "2.0.0" } Using legacy plugin application: buildscript { repositories { maven { url = uri ( "https://plugins.gradle.org/m2/") } } dependencies { classpath ( "org.gradle.kotlin:gradle-kotlin-dsl-plugins:2.0.0") } } apply ( plugin = "org.gradle.kotlin.kotlin-dsl") By default, the plugin warns about using experimental features of the Kotlin compiler. Gradle has features you cannot get from other build tools: A highly-customizable dependency resolution engine, visual build inspection and debugging tools, and many work avoidance mechanisms. Gradle’s Kotlin DSL provides an alternative syntax to the traditional Groovy DSL with an enhanced editing experience in supported IDEs, with superior content assist, refactoring, documentation, and more. The Gradle build model makes heavy use of container objects (or just "containers"). Welcome! Note that it’s necessary to specify the type of the task explicitly, otherwise the script won’t compile because the inferred type will be Task, not Test, and the testLogging property is specific to the Test task type. Here are some examples that illustrate the situations in which configuration avoidance applies: For all other containers than tasks, accessors for elements are of type NamedDomainObjectProvider and provide the same behavior. You can then find out the type of a given task by running gradle help --task , as demonstrated here: Note that the IDE can assist you with the required imports, so you only need the simple names of the types, i.e. Kotlin is a type safe language which means that we need to be more strict now on our scripts, specially when migrating Groovy ones. Gradle ships with kotlin-compiler-embeddable plus matching versions of kotlin-stdlib and kotlin-reflect libraries. Everything you can read in a Kotlin DSL script is Kotlin code compiled and executed by Gradle. One can discover what tasks are available by running gradle tasks. These are the Kotlin compiler arguments used for compiling Kotlin DSL scripts and Kotlin sources and scripts in a project that has the kotlin-dsl plugin applied: Sets the target version of the generated JVM bytecode to 1.8. For example, Gradle 4.3 ships with the Kotlin DSL v0.12.1 that includes Kotlin 1.1.51 versions of these modules.