@ContributesAndroidInjector broken - nondescript error

Tried to use @ContributesAndroidInjector in a simplistic sample project but failed and no idea what the problem is. The sole build error is

dagger.internal.codegen.ComponentProcessor was unable to process this interface because not all of its dependencies could be resolved. Check for compilation errors or a circular dependency with generated code.
interface AppComponent extends AndroidInjector<MainApplication> {
^
1 error

I followed the documentation in creating my sample code. I have no errors when I replace the @ContributesAndroidInjector with the equivalent old-style code.

Same issue with UsesGeneratedModulesApplication from the Dagger repository, at least when I build it in a Gradle project.

[sevar83]

“Just incase anyone as dumb as me also comes across this thread”

Another dumbass in the party. You’re my life savior! I’m struggling since several hours! Who could expect that @ContributesAndroidInjector requires a separate artifact! If anyone in future sees the error message componentProcessor was unable to process this interface because not all of its dependencies could be resolved. Check for compilation errors or a circular dependency with generated code. the above could be the cause.

[Edijae]

Guys, I’m using kotlin in android studio. What was causing this error was because i was using annotationProcessor instead of kapt

 //dagger
implementation "com.google.dagger:dagger:$daggerVersion"
kapt "com.google.dagger:dagger-compiler:$daggerVersion"
implementation "com.google.dagger:dagger-android:$daggerVersion"
implementation "com.google.dagger:dagger-android-support:$daggerVersion" // if you use the support libraries
annotationProcessor "com.google.dagger:dagger-android-processor:$daggerVersion"

Can you see the last line of code above? yah that one made me struggle for like 2 days. so,as i said, what was needed is kotlin application processing tool. a.k.a kapt and not annotationProcessor

//dagger
    implementation "com.google.dagger:dagger:$daggerVersion"
    kapt "com.google.dagger:dagger-compiler:$daggerVersion"
    implementation "com.google.dagger:dagger-android:$daggerVersion"
    implementation "com.google.dagger:dagger-android-support:$daggerVersion" // if you use the support libraries
    kapt "com.google.dagger:dagger-android-processor:$daggerVersion"