DaggerApplicationComponent not compiled

Question

I'm using the latest beta of android studio 3 (currently beta 4), and I can't seem to get it to generate the dagger classes needed.

From my side I created an empty project. Then I renamed the activity to match the dagger notes, YourActivity. See "Injecting Activity objects" in https://google.github.io/dagger/android.html, which shows this:

@Subcomponent(modules = ...)
public interface YourActivitySubcomponent extends AndroidInjector<YourActivity> {
  @Subcomponent.Builder
  public abstract class Builder extends AndroidInjector.Builder<YourActivity> {}
}

@Module(subcomponents = YourActivitySubcomponent.class)
abstract class YourActivityModule {
  @Binds
  @IntoMap
  @ActivityKey(YourActivity.class)
  abstract AndroidInjector.Factory<? extends Activity>
  bindYourActivityInjectorFactory(YourActivitySubcomponent.Builder builder);
}

@Component(modules = {..., YourActivityModule.class})
interface YourApplicationComponent {}

@ActivityScope
@ContributesAndroidInjector(modules = { /* modules to install into the subcomponent */ })
abstract YourActivity contributeYourActivityInjector();

public class YourApplication extends Application implements HasActivityInjector {
  @Inject DispatchingAndroidInjector<Activity> dispatchingActivityInjector;

  @Override
  public void onCreate() {
    super.onCreate();
    DaggerYourApplicationComponent.create()
        .inject(this);
  }

  @Override
  public AndroidInjector<Activity> activityInjector() {
    return dispatchingActivityInjector;
  }
}

//the renamed activity
public class YourActivity extends Activity {

  public void onCreate(Bundle savedInstanceState) {
    //added this line
    AndroidInjection.inject(this);

    super.onCreate(savedInstanceState);
  }
}

I've also added the following from that page for the gradle build app file:

dependencies {
  compile 'com.google.dagger:dagger-android:2.11'
  compile 'com.google.dagger:dagger-android-support:2.11' // if you use the support libraries
  annotationProcessor 'com.google.dagger:dagger-android-processor:2.11'
}

because I was still not seeing anything I tried updating compile to implementation with still no luck, and if you're curious, that looks like:

dependencies {
  implementation 'com.google.dagger:dagger-android:2.11'
  implementation 'com.google.dagger:dagger-android-support:2.11' // if you use the support libraries
  annotationProcessor 'com.google.dagger:dagger-android-processor:2.11'
}

Also, I've found the default setting where I can turn on the default Build -> Compiler -> Annotation Processors to Enable it. I did this before creating the new project.

After all of this, nothing seems to work. Is this broken in android studio 3.x? If not how did you get it work?

Thanks, Kelly

Answer 1

Ahhh ha! I discovered the issue. It appears I needed another annotationProcessor line for the gradle app file

annotationProcessor 'com.google.dagger:dagger-compiler:2.11'

While their example doesn't quite work right, at least I am now seeing the DaggerYourApplicationComponent

the full gradle portion:

dependencies {
  compile 'com.google.dagger:dagger-android:2.11'
  compile 'com.google.dagger:dagger-android-support:2.11' // if you use the support libraries
  annotationProcessor 'com.google.dagger:dagger-android-processor:2.11'
  annotationProcessor 'com.google.dagger:dagger-compiler:2.11'
}

Note: I haven't tried replacing compile with implementation, but I'm just glad this worked.

Hopefully, this helps others too

Answer 2

Dagger like compile-time dependency injection tools need once run application. Then it will create automatically if there is no error.

Answer 3

The detailed solution is here:

Inside your app-level build.gradle inside dependencies block, add these lines:

     //dagger2
     api 'com.google.dagger:dagger:2.24'
     api 'com.google.dagger:dagger-android:2.24'
     api 'com.google.dagger:dagger-android-support:2.24'

     annotationProcessor 'com.google.dagger:dagger-compiler:2.24'
     kapt 'com.google.dagger:dagger-compiler:2.24'

     annotationProcessor 'com.google.dagger:dagger-android-processor:2.24'
     kapt 'com.google.dagger:dagger-android-processor:2.24'

     compileOnly 'javax.annotation:jsr250-api:1.0'
     implementation 'javax.inject:javax.inject:1'

Inside android block of app-level build.gradle,

kapt {
        generateStubs = true
    }

At the top of the app-level build.gradle, Do this in exactly below order.

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-kapt'
apply plugin: 'kotlin-android-extensions'

Finally, You need to configure Annotation Process as provided in the screenshot below. You can do this File>Other Settings>Settings for New Projects>search"Annotation processor"

After this, do from Menu Build > Rebuild. You are done!

Test:

@Component
public interface ApplicationComponent {

}

Now, you can use DaggerApplicationComponent that was generated at compile-time for your ApplicationComponent interface.

public class MyApplication extends Application {

    ApplicationComponent applicationComponent = DaggerApplicationComponent.create();


}

Answer 4

May be it is too late. But implementation also work on dagger 2.11

implementation 'com.google.dagger:dagger-android:2.11'
implementation 'com.google.dagger:dagger-android-support:2.11'
annotationProcessor 'com.google.dagger:dagger-android-processor:2.11'
annotationProcessor 'com.google.dagger:dagger-compiler:2.11'

I have made a simple hello world project to implement dagger 2.11 using Android Studio 3.0 beta-2. Hope this might help the beginners (like me) to have a good start since google documentation does not provide a clear instructions on it

MyDaggerExample

Answer 5

You might have forgot to add apply plugin: 'kotlin-kapt' to the app level build.gradle

// dependency injection
implementation "com.google.dagger:dagger:$dagger2_version"
kapt "com.google.dagger:dagger-compiler:$dagger2_version"
kapt "com.google.dagger:dagger-android-processor:$dagger2_version"
annotationProcessor "com.google.dagger:dagger-compiler:$dagger2_version"

Answer 6

You just need to run "Rebuild" of the project and fix all compile errors if any.

Answer 7

add dependency in gradle for dagger all 5 library given below

implementation 'com.google.dagger:dagger:2.11'
annotationProcessor "com.google.dagger:dagger-compiler:2.11"
implementation "com.google.dagger:dagger-android:2.11"
implementation 'com.google.dagger:dagger-android-support:2.11'
annotationProcessor 'com.google.dagger:dagger-android-processor:2.11'

and also add repositories mavenCenteral()

allprojects {
repositories {
    google()
    jcenter()
    mavenCentral()

Answer 8

I started seeing problems when I upgraded to gradle 3.0.0 as well. For me the solution was to change the implementation dagger lines to api:

api 'com.google.dagger:dagger-android:2.11'

Answer 9

Changing implementation & annotationProcessor to kapt might help you.

@Singleton
@Component(modules = [AndroidSupportInjectionModule::class])
interface AppComponent : AndroidInjector<BaseApplication?> {
@Component.Builder
interface Builder {
    @BindsInstance
    fun application(application: Application?): Builder?
    fun build(): AppComponent?
    }
}

And from your application class

class BaseApplication : DaggerApplication() {
override fun applicationInjector(): AppComponent? {
    return DaggerAppComponent.builder().application(this)?.build()
    //        return null;
   }

}

Also use change

implementation '*emphasized text*com.google.dagger:dagger:2.15'
annotationProcessor 'com.google.dagger:dagger-compiler:2.15'

to

kapt  'com.google.dagger:dagger:2.15'
kapt  'com.google.dagger:dagger-compiler:2.15'

Thank you.