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kotlinlang

Do you use platform plugin? for example `kotlin-platform-jvm` instead of `kotlin` in Gradle?

```apply plugin: 'kotlin-platform-jvm'

repositories {
    jcenter()
    maven { url "<http://kotlin.bintray.com/kotlinx>" }
}

sourceSets {
    main.kotlin.srcDirs += 'main/'
    test.kotlin.srcDirs += 'test/'
}

dependencies {
    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    expectedBy project(":booking:framework")

    testCompile "junit:junit:4.12"
    testCompile "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
    testCompile "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
}```

expectedBy dependency and `actual` declaration should be enough

What is your error message? maybe you forgot to implement some declarations

Here s my expect declaration: ```expect class Platform(
        url: String
) {
    fun get():String
}```

and here is my actual: ```actual class Platform actual constructor(
        private val url: String
) {
    actual fun get():String {
        return "KN-Android $url"
    }
}```

I’m using one from an example project i found online

And my error says `Expected class Platform has no actual declaration in module `

And vice versa: `Actual class 'Platform' has no corresponding expected declaration`

hmm, just for test, try to use the same actual declaration with primary constructor, maybe this is the problem

Sorry what do you mean? I’m new to kotlin as well

try:
```
actual class Platform(url: String) {
    actual fun get():String {
        return "test"
    }
}```

Maybe you could show some sample project that reproduces this problem

Class must have the same package in expect and actual declaration

It is just the compiler that raises the error or also idea? If you have the error in idea, just use the quickfix.

Yes it worked! Thankyou :slightly_smiling_face:

I’m still relatively new to Android/Kotlin

It’s Kotlin multi-platform rule, class name is not enough, you should use fully qualified name of a class package + name

Also, if you use multiple source sets in gradle project, then the corresponding expects and actuals should be in the same named source sets. For example, actuals from _main_ source set of platform project implement expects from _main_ source set common project.

<@U0AAQKT9Q> So, when the `main` of `expect common` module is located in `./common/main/`, while the `main` of `actual platform` module resides in `./src/main/java`. The building won’t work? Even I set the `sourceSets` in `build.gradle`? These relative path of the 2 need to match even in the different project?

<@U822EMCSH> No, the binding works by sourceset name. The directory layout inside the sourceset can be arbitrary