Failed to resolve variable '${project.groupId}'

Question

I migrate my project to AndroidX and I got these errors when building the project:

[TAG] Failed to resolve variable '${project.groupId}'    [TAG] Failed to resolve variable '${project.version}'    [TAG] Failed to resolve variable '${project.groupId}'    [TAG] Failed to resolve variable '${project.version}'    [TAG] Failed to resolve variable '${project.groupId}'    [TAG] Failed to resolve variable '${project.version}'    

I already tried several possible solutions:

• Clean Project
• Invalidate Cache and Restart
• Set enableJetifier to false
• Add option --refresh-dependencies to the compiler settings

Here is my project gradle file:

buildscript {     repositories {         jcenter()         maven {             url 'https://maven.google.com/'             name 'Google'         }         google()         maven {             url 'https://maven.fabric.io/public'         }     }     dependencies {         classpath 'com.android.tools.build:gradle:3.2.1'         classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'         classpath 'com.google.gms:google-services:4.0.0'         classpath 'io.fabric.tools:gradle:1.25.4'     } }  allprojects {     repositories {         jcenter()         maven {             url 'https://jitpack.io'         }         maven {             url 'https://maven.google.com/'             name 'Google'         }     } }  task clean(type: Delete) {     delete rootProject.buildDir } 

And here is my app gradle file:

apply plugin: 'com.android.application' apply plugin: 'io.fabric'  android {      compileOptions {         sourceCompatibility JavaVersion.VERSION_1_8         targetCompatibility JavaVersion.VERSION_1_8     }      dexOptions {         javaMaxHeapSize "4g"     }      signingConfigs {         //not showing this     }     compileSdkVersion 28     defaultConfig {         applicationId "my.app.package"         minSdkVersion 21         targetSdkVersion 28         versionCode 59         versionName "1.5.2"          vectorDrawables.useSupportLibrary = true         multiDexEnabled true      }     dataBinding {         enabled = true     }     // workaround for "duplicate files during packaging of APK" issue     // see https://groups.google.com/d/msg/adt-dev/bl5Rc4Szpzg/wC8cylTWuIEJ     packagingOptions {         exclude 'META-INF/ASL2.0'         exclude 'META-INF/LICENSE'         exclude 'META-INF/NOTICE'          //Workaround to an issue due to google play-services 11.0.0 + rxJava         exclude 'META-INF/rxjava.properties'     }      buildTypes {         release {             debuggable false             minifyEnabled true             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'             signingConfig signingConfigs.release_config          }         debug {             applicationIdSuffix ".debug"             versionNameSuffix " - debug"             debuggable true         }     }      flavorDimensions "public"      productFlavors {         //not useful to show this     } }  ext {     supportLibVersion = '28.0.0' }  dependencies {     implementation fileTree(include: ['*.jar'], dir: 'libs')     testImplementation 'junit:junit:4.12'     implementation 'org.jetbrains:annotations-java5:15.0'     implementation project(path: ':security')      implementation 'androidx.appcompat:appcompat:1.0.0'     implementation 'androidx.legacy:legacy-support-v4:1.0.0'     implementation 'androidx.legacy:legacy-support-v13:1.0.0'     implementation 'com.google.android.material:material:1.0.0'     implementation 'androidx.recyclerview:recyclerview:1.0.0'     implementation 'androidx.cardview:cardview:1.0.0'     implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha2'     implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'      implementation 'com.google.firebase:firebase-core:16.0.0'     implementation 'com.crashlytics.sdk.android:crashlytics:2.9.3'     implementation 'com.google.guava:guava:22.0-android'     implementation 'com.google.android:flexbox:0.2.3'     implementation 'com.google.code.gson:gson:2.8.0'      implementation 'com.hannesdorfmann.fragmentargs:annotation:3.0.2'     annotationProcessor 'com.hannesdorfmann.fragmentargs:processor:3.0.2'      implementation 'com.f2prateek.dart:dart:2.0.0'     annotationProcessor 'com.f2prateek.dart:dart-processor:2.0.0'      implementation 'com.google.dagger:dagger:2.2'     annotationProcessor 'com.google.dagger:dagger-compiler:2.2'      implementation 'com.couchbase.lite:couchbase-lite-android:1.4.1'     implementation 'com.couchbase.lite:couchbase-lite-android-sqlcipher:1.4.1'      implementation 'com.squareup.retrofit2:retrofit:2.2.0'     implementation 'com.squareup.retrofit2:converter-gson:2.2.0'      implementation 'com.wang.avi:library:1.0.5'     implementation 'com.nineoldandroids:library:2.4.0'     implementation 'com.jaredrummler:twodscrollview:1.0.1'      implementation 'com.arasthel:asyncjob-library:1.0.3'     implementation('org.simpleframework:simple-xml:2.7.1') {         exclude group: 'xpp3', module: 'xpp3'         exclude group: 'stax', module: 'stax-api'         exclude group: 'stax', module: 'stax'     }      implementation 'io.reactivex:rxandroid:1.2.1'     implementation 'io.reactivex:rxjava:1.1.6'      debugImplementation 'com.squareup.leakcanary:leakcanary-android:1.5.4'     releaseImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.5.4'     testImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.5.4'      implementation 'com.github.daniel-stoneuk:material-about-library:2.2.1'     implementation 'org.apache.commons:commons-lang3:3.4'      implementation('com.github.hotchemi:permissionsdispatcher:3.0.1') {         exclude module: "support-v13"     }     annotationProcessor "com.github.hotchemi:permissionsdispatcher-processor:3.0.1"      implementation 'com.pascalwelsch.compositeandroid:activity:27.0.0'     implementation 'com.pascalwelsch.compositeandroid:fragment:27.0.0'      implementation 'commons-codec:commons-codec:1.10'      implementation 'com.jakewharton.timber:timber:4.7.1'     implementation 'com.firebase:firebase-jobdispatcher:0.8.5'   }  apply plugin: 'com.google.gms.google-services'  // https://stackoverflow.com/a/49981467/3520621 configurations {     cleanedAnnotations     compile.exclude group: 'org.jetbrains' , module:'annotations' } 

---

UPDATE

I run gradlew assembleDebug --stacktrace --debug --info and here are some more info:

... Caused by: org.gradle.api.artifacts.transform.ArtifactTransformException: Failed to transform file 'dagger-compiler-2.2.jar' to match attributes {artifactType=processed-jar} using transform JetifyTransform ... Caused by: java.lang.RuntimeException: Failed to transform 'C:\Users\me\.gradle\caches\modules-2\files-2.1\com.google.dagger\dagger-compiler\2.2\e411f732e5cd9697cdb291f6073b0d6ee2352023\dagger-compiler-2.2.jar' using Jetifier. Reason: The type does not support '.' as package separator! Received 'java.lang.Object;Ljava.lang.Class'.. (Run with --stacktrace for more details.) To disable Jetifier, set android.enableJetifier=false in your gradle.properties file. 

So it seems jetifier and dagger are the cause, but jetifier is necessary for the migration to AndroidX and I don't want to remove dagger.

If I set android.enableJetifier=false I have more than 50 issues about DataBinding.

---

UPDATE 2 Here is the full Exception

org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration$ArtifactResolveException: Could not resolve all files for configuration ':app:devDebugAnnotationProcessorClasspath'.         at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration.rethrowFailure(DefaultConfiguration.java:944)         at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration.access$1600(DefaultConfiguration.java:120)         at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration$ConfigurationFileCollection.getFiles(DefaultConfiguration.java:918)         at org.gradle.api.internal.file.AbstractFileCollection.iterator(AbstractFileCollection.java:68)         at org.gradle.api.internal.changedetection.state.AbstractFileCollectionSnapshotter$FileCollectionVisitorImpl.visitCollection(AbstractFileCollectionSnapshotter.java:72)         at org.gradle.api.internal.file.AbstractFileCollection.visitRootElents(AbstractFileCollection.java:234)         at org.gradle.api.internal.file.CompositeFileCollection.visitRootElents(CompositeFileCollection.java:185)         at org.gradle.api.internal.changedetection.state.AbstractFileCollectionSnapshotter.snapshot(AbstractFileCollectionSnapshotter.java:55)         at org.gradle.api.internal.changedetection.state.DefaultClasspathSnapshotter.snapshot(DefaultClasspathSnapshotter.java:42)         at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.snapshotTaskFiles(CacheBackedTaskHistoryRepository.java:329)         at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.createExecution(CacheBackedTaskHistoryRepository.java:151)         at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.access$100(CacheBackedTaskHistoryRepository.java:61)         at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository$1.getCurrentExecution(CacheBackedTaskHistoryRepository.java:111)         at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.getStates(DefaultTaskArtifactStateRepository.java:208)         at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.isUpToDate(DefaultTaskArtifactStateRepository.java:93)         at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:50)         at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)         at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)         at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)         at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)         at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:91)         at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)         at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:59)         at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)         at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)         at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)         at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:256)         at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)         at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)         at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)         at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)         at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:249)         at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:238)         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)         at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:663)         at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:597)         at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)         at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)         at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)         at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) Caused by: org.gradle.api.artifacts.transform.ArtifactTransforxception: Failed to transform file 'dagger-compiler-2.2.jar' to match attributes {artifactType=processed-jar} using transform JetifyTransform         at org.gradle.api.internal.artifacts.transform.UserCodeBackedTransforr.transform(UserCodeBackedTransforr.java:89)         at org.gradle.api.internal.artifacts.transform.TransformArtifactOperation.run(TransformArtifactOperation.java:41)         at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)         at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)         at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)         at org.gradle.internal.progress.DefaultBuildOperationExecutor.access$900(DefaultBuildOperationExecutor.java:63)         at org.gradle.internal.progress.DefaultBuildOperationExecutor$ParentPreservingQueueWorker.execute(DefaultBuildOperationExecutor.java:378)         at org.gradle.internal.operations.DefaultBuildOperationQueue$WorkerRunnable.runOperation(DefaultBuildOperationQueue.java:230)         at org.gradle.internal.operations.DefaultBuildOperationQueue$WorkerRunnable.access$600(DefaultBuildOperationQueue.java:172)         at org.gradle.internal.operations.DefaultBuildOperationQueue$WorkerRunnable$1.call(DefaultBuildOperationQueue.java:209)         at org.gradle.internal.operations.DefaultBuildOperationQueue$WorkerRunnable$1.call(DefaultBuildOperationQueue.java:203)         at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:152)         at org.gradle.internal.operations.DefaultBuildOperationQueue$WorkerRunnable.runBatch(DefaultBuildOperationQueue.java:202)         at org.gradle.internal.operations.DefaultBuildOperationQueue$WorkerRunnable.run(DefaultBuildOperationQueue.java:177)         ... 3 more Caused by: java.lang.RuntiException: Failed to transform 'C:\Users\martin\.gradle\caches\modules-2\files-2.1\com.google.dagger\dagger-compiler\2.2\e411f732e5cd9697cdb291f6073b0d6ee2352023\dagger-compiler-2.2.jar' using Jetifier. Reason: The type does not supp ort '.' as package separator! Received 'java.lang.Object;Ljava.lang.Class'.. (Run with --stacktrace for more details.) To disable Jetifier, set android.enableJetifier=false in your gradle.properties file.         at com.android.build.gradle.internal.dependency.JetifyTransform.transform(JetifyTransform.kt:204)         at org.gradle.api.internal.artifacts.transform.TransformArtifactsAction.apply(TransformArtifactsAction.java:44)         at org.gradle.api.internal.artifacts.transform.TransformArtifactsAction.apply(TransformArtifactsAction.java:29)         at org.gradle.api.internal.artifacts.transform.DefaultTransfordFileCache$TransformAction.execute(DefaultTransfordFileCache.java:224)         at org.gradle.api.internal.artifacts.transform.DefaultTransfordFileCache$TransformAction.execute(DefaultTransfordFileCache.java:211)         at org.gradle.internal.resource.local.DefaultPathKeyFileStore$1.execute(DefaultPathKeyFileStore.java:111)         at org.gradle.internal.resource.local.DefaultPathKeyFileStore$1.execute(DefaultPathKeyFileStore.java:107)         at org.gradle.internal.resource.local.DefaultPathKeyFileStore.doAdd(DefaultPathKeyFileStore.java:160)         at org.gradle.internal.resource.local.DefaultPathKeyFileStore.add(DefaultPathKeyFileStore.java:107)         at org.gradle.internal.resource.local.DefaultPathKeyFileStore.add(DefaultPathKeyFileStore.java:50)         at org.gradle.api.internal.artifacts.transform.DefaultTransfordFileCache$1$1.create(DefaultTransfordFileCache.java:143)         at org.gradle.api.internal.artifacts.transform.DefaultTransfordFileCache$1$1.create(DefaultTransfordFileCache.java:122)         at org.gradle.cache.internal.LockOnDemandCrossProcessCacheAccess.withFileLock(LockOnDemandCrossProcessCacheAccess.java:89)         at org.gradle.cache.internal.DefaultCacheAccess.withFileLock(DefaultCacheAccess.java:193)         at org.gradle.cache.internal.DefaultPersistentDirectoryStore.withFileLock(DefaultPersistentDirectoryStore.java:158)         at org.gradle.cache.internal.DefaultCacheFactory$ReferenceTrackingCache.withFileLock(DefaultCacheFactory.java:187)         at org.gradle.api.internal.artifacts.transform.DefaultTransfordFileCache$1.create(DefaultTransfordFileCache.java:122)         at org.gradle.api.internal.artifacts.transform.DefaultTransfordFileCache$1.create(DefaultTransfordFileCache.java:115)         at org.gradle.cache.internal.ProducerGuard$AdaptiveProducerGuard.guardByKey(ProducerGuard.java:97)         at org.gradle.api.internal.artifacts.transform.DefaultTransfordFileCache.loadIntoCache(DefaultTransfordFileCache.java:115)         at org.gradle.api.internal.artifacts.transform.DefaultTransfordFileCache.getResult(DefaultTransfordFileCache.java:107)         at org.gradle.api.internal.artifacts.transform.UserCodeBackedTransforr.transform(UserCodeBackedTransforr.java:87)         ... 16 more Caused by: java.lang.IllegalArguntException: The type does not support '.' as package separator! Received 'java.lang.Object;Ljava.lang.Class'.         at com.android.tools.build.jetifier.core.type.JavaType.<init>(JavaType.kt:28)         at com.android.tools.build.jetifier.processor.transform.bytecode.asm.CustomRemapper.mapValue(CustomRemapper.kt:49)         at org.objectweb.asm.commons.thodRemapper.visitLdcInsn(thodRemapper.java:179)         at org.objectweb.asm.ClassReader.readCode(ClassReader.java:1582)         at org.objectweb.asm.ClassReader.readthod(ClassReader.java:1126)         at org.objectweb.asm.ClassReader.accept(ClassReader.java:698)         at org.objectweb.asm.ClassReader.accept(ClassReader.java:500)         at com.android.tools.build.jetifier.processor.transform.bytecode.ByteCodeTransforr.runTransform(ByteCodeTransforr.kt:39)         at com.android.tools.build.jetifier.processor.Processor.visit(Processor.kt:328)         at com.android.tools.build.jetifier.processor.archive.ArchiveFile.accept(ArchiveFile.kt:41)         at com.android.tools.build.jetifier.processor.Processor.visit(Processor.kt:316)         at com.android.tools.build.jetifier.processor.archive.Archive.accept(Archive.kt:66)         at com.android.tools.build.jetifier.processor.Processor.transformLibrary(Processor.kt:312)         at com.android.tools.build.jetifier.processor.Processor.transform(Processor.kt:175)         at com.android.build.gradle.internal.dependency.JetifyTransform.transform(JetifyTransform.kt:199)         ... 37 more 

Answer 1

What I did to solve this is File - Invalidate Caches/Restart.

Answer 2

I have all the time the same Problem, just add something in the Gradle an Sync Again, and the problem was solved, i think is a bug from Android Studio