Dagger 2 "Dagger" prefix component not able to compile? auto generated class

Question

Im trying to use Dagger 2 on android. I previously had it working and i had an appModule injecting dependencies into specific classes in the app. My Issue is that iam getting the error

Error:(14, 55) error: cannot find symbol class DaggerAppComponent

which attempting to import. this is an autogenerated class

below are my Dagger specific dependencies in my build.gradle file

 compile 'com.google.dagger:dagger-compiler:2.0.2'
 compile 'com.google.dagger:dagger:2.0.2'
 provided 'javax.annotation:jsr250-api:1.0'

Ive tried cleaning and rebuilding the app numerous times but the class wont generate. Ive also tried using

 compile 'org.glassfish:javax.annotation:10.0-b28'

for my annotations but Iam having no luck still? If anyone can help me out id appreciate. Its kind of difficult to see exactly what is going on for me at present? Thanks

EDIT: Component code this was working before and i just added 1 extra class to inject into?

@Singleton
@Component(modules = AppModule.class)
public interface AppComponent {

    void inject(RegHelper reghelper);
    void inject(headerFooterRecViewAdapter headadapter);
    void inject(SectionListExampleActivity seclistactivity);

}

Answer 1

This did the trick for me with the (current) latest dagger dependecies.

`dependencies{
...
compile 'com.google.dagger:dagger:2.11'
compile 'com.google.dagger:dagger-android-support:2.11'
annotationProcessor "com.google.dagger:dagger-compiler:2.11"
}`

Answer 2

Setting up a stand-alone project in Android Studio 2.3, I updated the default gradle files as follows to get the generated Component file. Added lines have comment // dagger2 addition

PROJECT build.gradle:

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.1'

        // dagger2 addition
        classpath 'com.android.tools.build:gradle:1.0.0'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.+' 

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()

        // dagger2 addition
        mavenCentral()
        maven{
            url 'https://oss.sonatype.org/content/repositories/snapshots/'
        }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

APP MODULE build.gradle:

apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt'   // dagger2 addition

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.demo.dagger2demo"
        minSdkVersion 15
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:25.3.0'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    testCompile 'junit:junit:4.12'

    // dagger2 addition
    compile 'com.google.dagger:dagger:2.+'
    apt "com.google.dagger:dagger-compiler:2.+"
}

Answer 3

Please add

apt 'com.google.dagger:dagger-compiler:2.x'

to your app build.gradle file