Dagger 2 static provider methods in kotlin

Question

With the recent versions of dagger 2 one of the improvements made are the possibility of having static provide methods. Simply so:

@Provides
static A provide         


        

Answer 1

Now Dagger2 (version 2.26) support companion objects in @Module annotated classes in kotlin withthouh @Module and @JvmStatic annotations

Better support for binding declarations within Kotlin companion objects of @Module annotated classes.

Update dagger dependencies to 2.26 version as

def dagger_version = "2.26"
//dagger
implementation "com.google.dagger:dagger:$dagger_version"
kapt "com.google.dagger:dagger-compiler:$dagger_version"

//If you're using classes in dagger.android you'll also want to include:
implementation "com.google.dagger:dagger-android:$dagger_version"
implementation "com.google.dagger:dagger-android-support:$dagger_version"
kapt "com.google.dagger:dagger-android-processor:$dagger_version"

so now you can use

@Module
class AModule {

  companion object {

    @Provides
    fun providesA(): A = A()
  }

}

---

Important: Soon, adding @Module on companion objects in @Module classes will raise an error.

Note: For backwards compatibility, we still allow @Module on the companion object and @JvmStatic on the provides methods. However, @Module on the companion object is now a no-op and all of its attributes (e.g. "includes") will be ignored. In future releases, we will make it an error to use @Module on a companion object.