Android项目中Java内部枚举类引发构建空指针异常（dexBuilderDebug任务执行失败）

嗨，各位开发者，我最近在开发Android应用时碰到了一个棘手的构建问题，先给大家看看我写的相关代码片段：

public class MyClass {
  private enum MODE {
    PLAY(0),
    STOP(1),
    PAUSE(2);

    private final int value;
    MODE(int value) {
      this.value = value;
    }
  }
}

构建过程中，我直接遇到了java.lang.NullPointerException，具体的错误详情如下：

Execution failed for task ':app:dexBuilderDebug'.
> There was a failure while executing work items
   > A failure occurred while executing com.android.build.gradle.internal.dexing.DexWorkAction
      > Failed to process: /proj/app/build/intermediates/javac/debug/classes

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:dexBuilderDebug'.
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda$executeIfValid$1(ExecuteActionsTaskExecuter.java:142)
    at org.gradle.internal.Try$Failure.ifSuccessfulOrElse(Try.java:282)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:140)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:128)
    at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:77)
    at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
    at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:51)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)
    at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
    at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)
    at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)
    at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
    at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)
    at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:69)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:327)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:314)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:307)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:293)
    at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:417)
    at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:339)
    at org.gradle.execution.plan.DefaultPlanExecutor.process(DefaultPlanExecutor.java:96)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph.executeWithServices(DefaultTaskExecutionGraph.java:140)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph.execute(DefaultTaskExecutionGraph.java:125)
    at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:39)
    at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:51)
    at org.gradle.execution.BuildOperationFiringBuildWorkerExecutor$ExecuteTasks.call(BuildOperationFiringBuildWorkerExecutor.java:54)
    at org.gradle.execution.BuildOperationFiringBuildWorkerExecutor$ExecuteTasks.call(BuildOperationFiringBuildWorkerExecutor.java:43)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
    at org.gradle.execution.BuildOperationFiringBuildWorkerExecutor.execute(BuildOperationFiringBuildWorkerExecutor.java:40)
    at org.gradle.internal.build.DefaultBuildLifecycleController.lambda$executeTasks$7(DefaultBuildLifecycleController.java:161)
    at org.gradle.internal.model.StateTransitionController.doTransition(StateTransitionController.java:247)
    at org.gradle.internal.model.StateTransitionController.lambda$tryTransition$7(StateTransitionController.java:174)
    at org.gradle.internal.work.DefaultSynchronizer.withLock(DefaultSynchronizer.java:44)
    at org.gradle.internal.model.StateTransitionController.tryTransition(StateTransitionController.java:174)
    at org.gradle.internal.build.DefaultBuildLifecycleController.executeTasks(DefaultBuildLifecycleController.java:161)
    at org.gradle.internal.build.DefaultBuildWorkGraphController$DefaultBuildWorkGraph.runWork(DefaultBuildWorkGraphController.java:156)
    at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:249)
    at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:109)
    at org.gradle.composite.internal.DefaultBuildController.doRun(DefaultBuildController.java:164)
    at org.gradle.composite.internal.DefaultBuildController.access$000(DefaultBuildController.java:45)
    at org.gradle.composite.internal.DefaultBuildController$BuildOpRunnable.run(DefaultBuildController.java:183)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
    at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
Caused by: org.gradle.workers.WorkerExecutionException: There was a failure while executing work items
    at org.gradle.workers.internal.DefaultWorkerExecutor.workerExecutionException(DefaultWorkerExecutor.java:267)
    at org.gradle.workers.internal.DefaultWorkerExecutor.await(DefaultWorkerExecutor.java:249)
    at com.android.build.gradle.internal.tasks.DexArchiveBuilderTaskDelegate.doProcess(DexArchiveBuilderTaskDelegate.kt:220)
    at com.android.build.gradle.internal.tasks.DexArchiveBuilderTask.doTaskAction(DexArchiveBuilderTask.kt:224)
    at com.android.build.gradle.internal.tasks.NewIncrementalTask$taskAction$$inlined$recordTaskAction$1.invoke(BaseTask.kt:69)
    at com.android.build.gradle.internal.tasks.Blocks.recordSpan(Blocks.java:51)
    at com.android.build.gradle.internal.tasks.NewIncrementalTask.taskAction(NewIncrementalTask.kt:46)
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:125)
    at org.gradle.api.internal.project.taskfactory.IncrementalInputsTaskAction.doExecute(IncrementalInputsTaskAction.java:32)
    at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:51)
    at org.gradle.api.internal.project.taskfactory.AbstractIncrementalTaskAction.execute(AbstractIncrementalTaskAction.java:25)
    at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:29)
    at org.gradle.api.internal.tasks.execution.TaskExecution$3.run(TaskExecution.java:236)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:29)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:26)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:47)

备注：内容来源于stack exchange，提问作者thestand9