【我的Android进阶之旅】解决Android Studio编译报错 null value in entry: destinationDir=null

版权声明：本文为【欧阳鹏】原创文章，欢迎转载，转载请注明出处! 【http://blog.csdn.net/ouyang_peng】 https://blog.csdn.net/qq446282412/article/details/82426092

一、问题描述

打开Android Studio，编写了一些代码之后，重新编译然后出现了如下所示的错误：

FAILURE: Build failed with an exception.

* What went wrong:
null value in entry: destinationDir=null

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

* Get more help at https://help.gradle.org

BUILD FAILED in 0s
14 actionable tasks: 1 executed, 13 up-to-date

点击【Run with –stacktrace】 重新编译，提示如下

FAILURE: Build failed with an exception.

* What went wrong:
null value in entry: destinationDir=null

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

* Exception is:
java.lang.NullPointerException: null value in entry: destinationDir=null
    at com.google.common.collect.CollectPreconditions.checkEntryNotNull(CollectPreconditions.java:33)
    at com.google.common.collect.ImmutableMap.entryOf(ImmutableMap.java:135)
    at com.google.common.collect.ImmutableMap$Builder.put(ImmutableMap.java:206)
    at com.google.common.collect.ImmutableSortedMap$Builder.put(ImmutableSortedMap.java:371)
    at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository$LazyTaskExecution.getOutputFilesSnapshot(CacheBackedTaskHistoryRepository.java:229)
    at org.gradle.api.internal.changedetection.rules.OutputFilesTaskStateChanges.getSnapshotAfterPreviousExecution(OutputFilesTaskStateChanges.java:76)
    at org.gradle.api.internal.changedetection.rules.OutputFilesTaskStateChanges.detectOverlappingOutputs(OutputFilesTaskStateChanges.java:91)
    at org.gradle.api.internal.changedetection.rules.OutputFilesTaskStateChanges.<init>(OutputFilesTaskStateChanges.java:41)
    at org.gradle.api.internal.changedetection.rules.TaskUpToDateState.<init>(TaskUpToDateState.java:58)
    at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.getStates(DefaultTaskArtifactStateRepository.java:192)
    at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.ensureSnapshotBeforeTask(DefaultTaskArtifactStateRepository.java:162)
    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:51)
    at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88)
    at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
    at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:124)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:80)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:105)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:99)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:625)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:580)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:99)
    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)


* Get more help at https://help.gradle.org

BUILD FAILED in 0s
14 actionable tasks: 1 executed, 13 up-to-date

二、解决问题

直接删除工程根目录下的 .gradle 文件夹，然后重新编译。

重新编译即可成功啦

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