Error Default interface methods are only supported starting with Android N (--min-api 24)

Look my console error

AGPBI: {"kind":"error","text":"Default interface methods are only supported starting with Android N (--min-api 24): void android.arch.lifecycle.DefaultLifecycleObserver.onCreate(android.arch.lifecycle.LifecycleOwner)","sources":[{}],"tool":"D8"} com.android.builder.dexing.DexArchiveBuilderException: com.android.builder.dexing.DexArchiveBuilderException: Failed to process /home/danilo/.gradle/caches/modules-2/files-2.1/android.arch.lifecycle/common-java8/1.1.1/795d68cd761d093ccb235d1d91b8fd17c2ae25ff/common-java8-1.1.1.jar at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:593) at java.util.concurrent.ForkJoinTask.reportException(ForkJoinTask.java:677) at java.util.concurrent.ForkJoinTask.join(ForkJoinTask.java:720) at com.android.ide.common.internal.WaitableExecutor.waitForTasksWithQuickFail(WaitableExecutor.java:146) at com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform.transform(DexArchiveBuilderTransform.java:405) at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:239) at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:235) at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:102) at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:230) at sun.reflect.GeneratedMethodAccessor360.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73) at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:50) at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39) at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:124) at org.gradle.internal.progress.DefaultBuildOperationExecutor$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.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:113) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:95) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:73) at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59) 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$1.run(ManagedExecutorImpl.java:46) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) at java.lang.Thread.run(Thread.java:745) Caused by: com.android.builder.dexing.DexArchiveBuilderException: Failed to process /home/danilo/.gradle/caches/modules-2/files-2.1/android.arch.lifecycle/common-java8/1.1.1/795d68cd761d093ccb235d1d91b8fd17c2ae25ff/common-java8-1.1.1.jar at com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform.launchProcessing(DexArchiveBuilderTransform.java:900) at com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform.lambda$convertToDexArchive$6(DexArchiveBuilderTransform.java:825) at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) Caused by: com.android.builder.dexing.DexArchiveBuilderException: Error while dexing. at com.android.builder.dexing.D8DexArchiveBuilder.getExceptionToRethrow(D8DexArchiveBuilder.java:124) at com.android.builder.dexing.D8DexArchiveBuilder.convert(D8DexArchiveBuilder.java:101) at com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform.launchProcessing(DexArchiveBuilderTransform.java:895) ... 6 more Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete at com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:72) at com.android.tools.r8.utils.ExceptionUtils.withD8CompilationHandler(ExceptionUtils.java:45) at com.android.tools.r8.D8.run(D8.java:89) at com.android.builder.dexing.D8DexArchiveBuilder.convert(D8DexArchiveBuilder.java:99) ... 7 more Caused by: com.android.tools.r8.utils.AbortException: Error: Default interface methods are only supported starting with Android N (--min-api 24): void android.arch.lifecycle.DefaultLifecycleObserver.onCreate(android.arch.lifecycle.LifecycleOwner) at com.android.tools.r8.utils.Reporter.failIfPendingErrors(Reporter.java:93) at com.android.tools.r8.utils.Reporter.fatalError(Reporter.java:73) at com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:64) ... 10 more Suppressed: com.android.tools.r8.ApiLevelException: Default interface methods are only supported starting with Android N (--min-api 24): void android.arch.lifecycle.DefaultLifecycleObserver.onCreate(android.arch.lifecycle.LifecycleOwner) at com.android.tools.r8.dex.FileWriter.checkInterfaceMethod(FileWriter.java:247) at com.android.tools.r8.dex.FileWriter.checkInterfaceMethods(FileWriter.java:213) at com.android.tools.r8.dex.FileWriter.generate(FileWriter.java:140) at com.android.tools.r8.dex.ApplicationWriter.writeDexFile(ApplicationWriter.java:438) at com.android.tools.r8.dex.ApplicationWriter.lambda$write$2(ApplicationWriter.java:226) at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:117) at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:38) at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:77) at com.google.common.util.concurrent.MoreExecutors$DirectExecutorService.execute(MoreExecutors.java:260) at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) at com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:66) at com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:36) at com.android.tools.r8.dex.ApplicationWriter.write(ApplicationWriter.java:224) at com.android.tools.r8.D8.run(D8.java:178) at com.android.tools.r8.D8.lambda$run$1(D8.java:92) at com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:60) ... 10 more Suppressed: java.util.concurrent.ExecutionException: com.android.tools.r8.ApiLevelException: Default interface methods are only supported starting with Android N (--min-api 24): void android.arch.lifecycle.DefaultLifecycleObserver.onCreate(android.arch.lifecycle.LifecycleOwner) at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:502) at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:461) at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:83) at com.android.tools.r8.utils.ThreadUtils.awaitFutures(ThreadUtils.java:21) at com.android.tools.r8.dex.ApplicationWriter.write(ApplicationWriter.java:260) ... 13 more [CIRCULAR REFERENCE:com.android.tools.r8.ApiLevelException: Default interface methods are only supported starting with Android N (--min-api 24): void android.arch.lifecycle.DefaultLifecycleObserver.onCreate(android.arch.lifecycle.LifecycleOwner)]

Look my gradle.

`apply plugin: ‘com.android.application’

apply plugin: ‘kotlin-android’

apply plugin: ‘kotlin-android-extensions’

apply plugin: ‘kotlin-kapt’

apply plugin: ‘de.mannodermaus.android-junit5’

android { compileSdkVersion 27 defaultConfig { applicationId “com.crudproject” minSdkVersion 19 targetSdkVersion 27 versionCode 1 versionName “1.0” testInstrumentationRunner “androidx.test.runner.AndroidJUnitRunner” } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile(‘proguard-android.txt’), ‘proguard-rules.pro’ } }

dataBinding {
    enabled = true
}

testOptions {
    junitPlatform {
        filters {
            engines {
                include 'spek'
            }
        }
    }
}

}

dependencies { def anko_version = ‘0.10.5’ def appcompat_version = ‘27.1.1’ def lifecycle_version = “1.1.1” def room_version = “1.1.1” def auto_disposable = “0.8.0” implementation fileTree(dir: ‘libs’, include: [‘*.jar’])

// Test
//testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
androidTestImplementation "android.arch.core:core-testing:1.1.1"
testImplementation "android.arch.core:core-testing:1.1.1"
testImplementation "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
testImplementation 'org.junit.platform:junit-platform-runner:1.0.2'
// Spek BDD
testImplementation 'org.junit.platform:junit-platform-engine:1.2.0'
testImplementation 'org.jetbrains.spek:spek-api:1.1.5'
testImplementation 'org.jetbrains.spek:spek-junit-platform-engine:1.1.5'

// Google appcompat
implementation "com.android.support:appcompat-v7:$appcompat_version"
implementation "com.android.support:support-v4:$appcompat_version"
implementation "com.android.support:recyclerview-v7:$appcompat_version"
implementation "com.android.support:cardview-v7:$appcompat_version"
implementation "com.android.support:design:$appcompat_version"

implementation 'com.android.support.constraint:constraint-layout:1.1.2'

// Kotlin
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
implementation "org.jetbrains.anko:anko:$anko_version"

//Arch
implementation "android.arch.lifecycle:extensions:$lifecycle_version"
implementation "android.arch.lifecycle:compiler:$lifecycle_version"
implementation "android.arch.lifecycle:common-java8:$lifecycle_version"
annotationProcessor "android.arch.lifecycle:compiler:$lifecycle_version"
//Retrofit2
implementation 'com.squareup.retrofit2:retrofit:2.3.0'
implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
implementation 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
implementation 'com.squareup.okhttp3:logging-interceptor:3.9.1'

//GSON
implementation 'com.google.code.gson:gson:2.8.2'

//RxAndroid, RxKotlin
implementation 'io.reactivex.rxjava2:rxandroid:2.0.2'
implementation 'io.reactivex.rxjava2:rxkotlin:2.1.0'

// Auto Disposable
implementation 'com.github.kizitonwose:android-disposebag:0.1.0'

// Room
implementation "android.arch.persistence.room:runtime:$room_version"
kapt "android.arch.persistence.room:compiler:$room_version"

// optional - RxJava support for Room
implementation "android.arch.persistence.room:rxjava2:$room_version"

} `

[kizitonwose]

It seems you need to compile your project with JDK 8. You can do this by adding the compileOptions block to your app-level build.gradle file:

android {
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

[kizitonwose]

@ALi-Moslehi According to your logs, your error is from com.google.android.exoplayer2. This library does not use or depend on ExoPlayer. You need to check other dependencies in your project.