BuildConfig variable. Error: cannot find symbol

Question

In project I have several flavors, several buildTypes and several folders for combinations

Build combinations:

Folder structure

In each folder I have custom Application class + AndroidManifest to register this Application class

Sometime, but just sometimes build fails with cannot find symbol error:

\app\src\main\java\ru\my\package\app\environment\MyApp.java:35: error: cannot find symbol
            .core(new CrashlyticsCore.Builder().disabled(!BuildConfig.ANALYTICS).build())

or App class independent but the same error

\app\src\main\java\ru\my\package\presentation\presenter\impl\MainPresenterImpl.java:104: error: cannot find symbol
    if (!BuildConfig.ANALYTICS) return;

But the very next build could be successful, so the possible flow is

1. Build (successful)
2. Some chagnes in the code
3. Build (error)
4. Build-retry (successful) <-- without any changes in code

Note

• It's not a sync problem and sync/invalidate cache is not the answer
• It's not a wrong import problem

Disclaimer: there are questions that looks like this one, but they're different, e.g.

Gradle buildConfigField BuildConfig cannot resolve symbol

UPDATE

Gradle dependencies:

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation project(path: ':OVSALibrary')
    implementation project(path: ':YaMapProject')
    implementation 'com.jakewharton:butterknife:8.8.1'
    implementation 'com.google.dagger:dagger:2.14.1'
    kapt 'com.google.dagger:dagger-compiler:2.14.1'
    implementation 'com.google.code.gson:gson:2.8.2'
    implementation 'eu.davidea:flexible-adapter:5.0.0-rc3'
    kapt 'com.jakewharton:butterknife-compiler:8.8.1'
    implementation "com.android.support:appcompat-v7:$support_lib_version"
    implementation "com.android.support:design:$support_lib_version"
    implementation "com.android.support:support-v4:$support_lib_version"
    implementation "com.android.support:recyclerview-v7:$support_lib_version"
    implementation "com.android.support:support-emoji:$support_lib_version"
    implementation "com.android.support:support-emoji-appcompat:$support_lib_version"
    implementation "com.android.support:support-emoji-bundled:$support_lib_version"
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    implementation 'com.squareup.retrofit2:retrofit:2.3.0'
    implementation 'com.squareup.okhttp3:okhttp:3.10.0'
    implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
    implementation 'io.reactivex.rxjava2:rxjava:2.1.7'
    implementation 'ru.egslava:MaskedEditText:1.0.5'
    implementation 'nl.big-o:liqp:0.7.3'
    implementation 'org.jsoup:jsoup:1.7.2'
    implementation 'me.everything:overscroll-decor-android:1.0.4'
    implementation 'com.squareup.picasso:picasso:2.6.0-SNAPSHOT'
    implementation 'com.squareup.okhttp3:logging-interceptor:3.10.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
    compile ('com.squareup.retrofit2:converter-simplexml:2.3.0') {
        exclude group: 'stax', module: 'stax-api'
        exclude group: 'stax', module: 'stax'
        exclude group: 'xpp3', module: 'xpp3'
    }
    implementation 'com.makeramen:roundedimageview:2.3.0'
    implementation ('com.github.revern:socket.io-client-java:master-SNAPSHOT') {
        exclude group: 'org.json', module: 'json'
    }
    implementation 'com.tbruyelle.rxpermissions2:rxpermissions:0.9.5@aar'
    implementation 'com.luckycatlabs:SunriseSunsetCalculator:1.2'
    implementation ('com.github.developer-shivam:Crescento:1.2.1') {
        exclude group: 'com.android.support', module: 'appcompat-v7'
        exclude group: 'com.android.support', module: 'palette-v7'
    }
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.tbruyelle.rxpermissions2:rxpermissions:0.9.5@aar'
    implementation('com.crashlytics.sdk.android:crashlytics:2.9.0@aar') {
        transitive = true;
    }
    implementation 'com.android.support:cardview-v7:27.1.1'
    implementation 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'

    implementation 'com.malinskiy:superrecyclerview:1.1.4'

    // Yandex.Map things
    implementation 'com.yandex.android:mapkit:3.0.0'

    // Yandex ads. Adfox.
    rcImplementation 'com.yandex.android:mobmetricalib:3.0.0'
    debugWithAnalyticsImplementation 'com.yandex.android:mobmetricalib:3.0.0'
    releaseImplementation 'com.yandex.android:mobmetricalib:3.0.0'
    implementation 'com.yandex.android:mobileads:2.71'


    // Waiting for https://github.com/SundeepK/CompactCalendarView/pull/287
    // Waiting for https://github.com/SundeepK/CompactCalendarView/pull/288
    implementation 'com.github.dryaz:CompactCalendarView:master-SNAPSHOT'

    // Waiting for https://github.com/opacapp/multiline-collapsingtoolbar/pull/57
    implementation 'com.github.dryaz:multiline-collapsingtoolbar:master-SNAPSHOT'

    implementation 'com.github.clans:fab:1.6.4'

    implementation 'org.greenrobot:eventbus:3.1.1'

    testImplementation "org.robolectric:robolectric:3.8"
    testImplementation 'junit:junit:4.12'
    testImplementation "com.android.support.test:monitor:1.0.2"
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

    // PAY SDK
    implementation(name:'mos-pay-sdk-1.0.9', ext:'aar')
    implementation 'io.card:android-sdk:5.5.1'
    implementation ('eu.livotov.labs.android:3DSView:1.1.2@aar') {transitive=true}

    // Android Architecture Components
    implementation "android.arch.lifecycle:runtime:$androidArch"
    implementation "android.arch.lifecycle:extensions:$androidArch"
    annotationProcessor "android.arch.lifecycle:compiler:$androidArch"

    compile 'com.google.firebase:firebase-core:16.0.0'
    compile 'com.google.firebase:firebase-messaging:17.0.0'
}

** UPDATE ** Here's the list of buildTypes and productFlavors

flavorDimensions("devbeta", "mainmirror")
    productFlavors {
        // Beta API enviroment
        beta {
            dimension = "devbeta"
            buildConfigField "String", "SOCKET_REMOTE_PATH", "\"/api-beta/socket.io\""
        }

        // Dev API enviroment
        dev {
            dimension = "devbeta"
            buildConfigField "String", "SOCKET_REMOTE_PATH", "\"/api-dev/socket.io\""
        }

        // Prod API enviroment
        prod {
            dimension = "devbeta"
            buildConfigField "String", "SOCKET_REMOTE_PATH", "\"/socket.io\""
        }

        mainhost {
            dimension = "mainmirror"
            buildConfigField "String", "CONFIG_REMOTE_HOSTNAME", "\"some.host.url\""
        }

        mirrorhost {
            dimension = "mainmirror"
            buildConfigField "String", "CONFIG_REMOTE_HOSTNAME", "\"some.host.url\""
        }
    }

    buildTypes {
        debug {
            minifyEnabled false
            shrinkResources false
            buildConfigField "boolean", "ANALYTICS", "false"
            signingConfig signingConfigs.customDebug
            ext.enableCrashlytics = false
            manifestPlaceholders = [
                    firebaseAnalyticsDeactivated: "true",
                    appIcon: "@mipmap/ic_launcher_debug",
            ]
        }

        debugWithAnalytics.initWith(buildTypes.debug)
        debugWithAnalytics {
            ext.betaDistributionGroupAliases = "group-internal"
            ext.betaDistributionReleaseNotes = "$getReleaseNotes"
            ext.enableCrashlytics = true
            buildConfigField "boolean", "ANALYTICS", "true"
            matchingFallbacks = ['debug', 'release']
        }

        debugWithProguard.initWith(buildTypes.debug)
        debugWithProguard {
            minifyEnabled true
            shrinkResources true
            proguardFiles(file('./proguard').listFiles())
            matchingFallbacks = ['release', 'debug']
        }

        // RC build for inner testers that has analytics, signed with debug key.
        rc {
            minifyEnabled true
            shrinkResources true
            proguardFiles(file('./proguard').listFiles())
            buildConfigField "boolean", "ANALYTICS", "true"
            // Fields for fabric beta distribution
            ext.betaDistributionGroupAliases = "group-internal"
            ext.betaDistributionReleaseNotes = "$getReleaseNotes"

            signingConfig signingConfigs.customDebug

            manifestPlaceholders = [
                    firebaseAnalyticsDeactivated: "false",
                    appIcon: "@mipmap/ic_launcher_rc",
            ]
            matchingFallbacks = ['debug', 'release']
        }

        release.initWith(buildTypes.rc)
        release {
            buildConfigField "boolean", "ANALYTICS", "true"
            ext.betaDistributionGroupAliases = "group-customer"
            signingConfig signingConfigs.release
            manifestPlaceholders = [
                    firebaseAnalyticsDeactivated: "false",
                    appIcon: "@mipmap/ic_launcher",
            ]
        }
    }

Answer 1

Rebuild Project if you have still problem on importing Package Name and then .BuildConfig