Unresolved reference DaggerApplicationComponent

Question

I'm trying to create my app component, but Dagger does not generate my app component. here is MyApplication class

class MyApplication : Application() {

companion object {
    @JvmStatic lateinit var graph: ApplicationComponent
}
@Inject
lateinit var locationManager : LocationManager

override fun onCreate() {
    super.onCreate()
    graph = DaggerApplicationComponent.builder().appModule(AppModule(this)).build()
    graph.inject(this)
  }
}

and here is my AppComponent class

@Singleton
@Component(modules = arrayOf(AppModule::class))
interface ApplicationComponent {
    fun inject(application: MyApplication)
}

here is screenshot

this is my project on github

here is error log

Error:(7, 48) Unresolved reference: DaggerApplicationComponent
Error:(28, 17) Unresolved reference: DaggerApplicationComponent
Error:Execution failed for task ':app:compileDebugKotlin'.
> Compilation error. See log for more details
Information:BUILD FAILED
Information:Total time: 21.184 secs
Error:e: .../MyApplication.kt: (7, 48): Unresolved reference: DaggerApplicationComponent
e: Unresolved reference: DaggerApplicationComponent
FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDebugKotlin'.
> Compilation error. See log for more details

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

Information:4 errors
Information:0 warnings
Information:See complete output in console

@user5543258 did you solve your issue? I have the same problem. — AlexKost, Oct 16 '16 at 11:44

score 52 · Answer 1 · answered Jan 24 '17 at 19:46

52

my solution is to add

apply plugin: 'kotlin-kapt'

and remove

kapt {
    generateStubs = true
}

answered Jan 24 '17 at 19:46

Pauland

1,974
16
25

2

This save my live. – Jelil Adesina Jun 05 '17 at 00:27
Seriously I was stuck for last one day, unfortunately didn't searched. It helped me a lot. – Ankit Dubey May 04 '20 at 10:00

score 49 · Answer 2 · answered Oct 01 '17 at 09:20

49

This helped me to fix this issue

Add this in the top of the build.gradle

apply plugin: 'kotlin-kapt'

Inside android tag add

kapt {
    generateStubs = true
}

And then replace

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

to

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

Now Rebuild the project by

Build -> Rebuild project

answered Oct 01 '17 at 09:20

Jeffrey Rajan

4,391
4
27
37

1

I think you should remove `generateStubs = true` – newbie Mar 11 '21 at 08:02

score 29 · Answer 3 · answered Aug 09 '16 at 16:28

29

Please try enabling stubs generation, this might be the reason why the class is not visible at this stage of the build process. In your build.gradle file, top level:

kapt {
    generateStubs = true
}

answered Aug 09 '16 at 16:28

AndroidEx

15,524
9
54
50

1

What about Java version?? – Ravi Jan 05 '18 at 22:12

score 7 · Answer 4 · answered Aug 25 '16 at 20:34

I've already downloaded your Github project. Thanks for sharing!

The answer for your issue is pretty simple:

Build -> Rebuild project

Dagger dependencies files will be recreated and app after would launched with any problem.

I checked already this with Android Studio 2.1.2 version. It works

score 5 · Answer 5 · answered Nov 13 '17 at 15:57

5

you should remove

kapt {
generateStubs = true}

and add to the top of application gradle file

apply plugin: 'kotlin-kapt'

then Dagger will take care of the rest :)

answered Nov 13 '17 at 15:57

ediBersh

1,135
1
12
19

score 4 · Answer 6 · answered May 15 '19 at 09:25

Add this on Top of build.gradlle

apply plugin: 'kotlin-kapt'

Add this in Dependencies

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

After that rebuild your project . i hope it will work. Thanks

score 3 · Answer 7 · answered Apr 08 '18 at 13:25

In my case missing kapt compiler dependency. Please make sure to have below dependency too.

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

app build.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-kapt'

apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.usb.utility"
        minSdkVersion 14
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:27.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    compile 'com.google.dagger:dagger-android:2.15'
    compile 'com.google.dagger:dagger-android-support:2.15' // if you use the support libraries
    kapt 'com.google.dagger:dagger-android-processor:2.15'
    kapt 'com.google.dagger:dagger-compiler:2.15'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}

score 2 · Answer 8 · answered Feb 06 '18 at 10:51

2

Also for Java users, the solution is simply to Rebuild your project.

answered Feb 06 '18 at 10:51

otoloye

677
7
11

This is perfect solution – Mubashar Javed Jan 06 '19 at 00:49

score 2 · Answer 9 · answered Feb 09 '18 at 12:16

2

Answer is simple :

Build -> Rebuild project

It works for me.

answered Feb 09 '18 at 12:16

tugbacevizci

81
1
7

score 2 · Answer 10 · answered Apr 22 '18 at 13:37

Only two steps should be required for mixed Java/Kotlin projects:

Add apply plugin: 'kotlin-kapt' to the top of the build file
Replace annotationProcessor 'com.google.dagger:dagger-compiler:2.14.1' with kapt 'com.google.dagger:dagger-compiler:2.14.1'

score 2 · Answer 11 · answered Oct 14 '21 at 14:33

2

In the new version of hilt, you need to use SingletonComponent::class instead of ApplicationComponent::class

answered Oct 14 '21 at 14:33

Simple UX Apps

611
2
10
20

score 1 · Answer 12 · answered Jul 18 '22 at 21:01

1

For anyone using the newest Dagger version (above 2.30):

ApplicationComponent has been replaced by SingletonComponent.

@Module
@InstallIn(SingletonComponent::class)
class RoomModule() {
   . . .
}

See this answer.

answered Jul 18 '22 at 21:01

nitro_nitrat

131
7

EpicPandaForce · Answer 13 · 2017-10-01T09:24:31.807

0

Please try adding this to your build.gradle

android {
    dexOptions {
        incremental false
    }

EDIT: apparently a year later this can happen if you don't apply kotlin-kapt plugin. Also make sure you use kaptinstead of annotationProcessor.

edited Oct 01 '17 at 09:24

answered Aug 09 '16 at 08:59

EpicPandaForce

79,669
27
256
428

https://github.com/developer--/Where_is_WIFI/blob/master/app/build.gradle – Aug 09 '16 at 09:10
What happens if you remove android-apt plugin? – EpicPandaForce Aug 09 '16 at 09:12
I'm not sure what's wrong then :( but please check [this example](https://github.com/damianpetla/kotlin-dagger-example) and see if there's any difference and if the "known limitations" here match your issue – EpicPandaForce Aug 09 '16 at 09:16

score 0 · Answer 14 · answered Jul 06 '22 at 16:36

In my case Rebuild didn't help. I injected two dependencies in <module> component (BookComponent):

fun inject(fragment: ListFragment)

fun inject(fragment: NotFoundFragment)

When I removed one inject, the project had built. But both injects together broke build process. Then I simply swapped them:

fun inject(fragment: NotFoundFragment)

fun inject(fragment: ListFragment)

Uddhav P. Gautam · Answer 15 · 2020-03-30T06:25:07.960

This must solve your problem:

Update (March 29, 2020)

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();


}

score -1 · Answer 16 · answered Jun 21 '20 at 13:31

-1

In my case, I did everything in al answers but did not fix it!

my solution: go to Directory path of your project and delete

build, app>build, .idea , .Gradle

and go back to the android studio and rebuild the project and Done!

answered Jun 21 '20 at 13:31

Sana Ebadi

6,656
2
44
44

Unresolved reference DaggerApplicationComponent

16 Answers16

Update (March 29, 2020)

Linked

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