Dagger2错误：Kotlin：未解析的参考：DaggerSOMETHINGComponent

Question

source code

I'm building a gradle project of Kotlin and Dagger2 which runs well half year ago in macOS:

GitHub:Kotlin-Tutorials13

you can get it by

git clone https://github.com/enbandari/Kotlin-Tutorials.git
cd Kotlin-Tutorials/code/Kt13

you can open it in IntelliJ IDEA

building enviroment

My building enviroment is listed as below:

• IntelliJ IDEA 2017.1.3
• JRE: 1.8.0_112-release-736-b21 amd64
• JVM: OpenJDK 64-Bit Server VM by JetBrains sro
• Windows 10 10.0

building result

It tuens out an error:

C:\Users\xiang\IdeaProjects\Kotlin-Tutorials-master\code\Kt13\src\main\kotlin\net\println\kt13\Service.kt
Error:(3, 25) Kotlin: Unresolved reference: DaggerRESTFulComponent
Error:(19, 9) Kotlin: Unresolved reference: DaggerRESTFulComponent

decompile

So, I decompile RESTFulComponent.class

the source file of it is RESTFulComponent.kt

package net.println.kt13

import dagger.Component
import net.println.kt13.module.RetrofitModule
import retrofit2.Retrofit
import javax.inject.Singleton

/**
 * Created by benny on 12/11/16.
 */
@Singleton
@Component(modules = arrayOf(RetrofitModule::class))
interface RESTFulComponent {
    fun retrofit(): Retrofit
}

decompile RESTFulComponent.class we get

// IntelliJ API Decompiler stub source generated from a class file
// Implementation of methods is not available

package net.println.kt13.module

@dagger.Module public final class RxAdapterModule public constructor() {
    @javax.inject.Singleton @dagger.Provides public final fun adapter(): retrofit2.CallAdapter.Factory { /* compiled code */ }
}

reason

The error result from annotation of dagger 's not working.

How can I fix this error?

Answer 1

wrong operation

I use Ctrl+F9 to compile and this error arises。

right operation

We should click View -> Tool Windows -> Gradle to open Gradle projects Window

Then click Tasks -> build -> build

reason

Ctrl+F9 isn't invoking gradle build , we should use gradle build in Gradle projects Window