我在Android Studio ver 2.2启动以及尝试构建项目时收到以下错误。提前谢谢。
错误：失败：生成失败，出现异常。
出了什么问题： java.lang.NullPointerException (无错误消息)
尝试： 使用 --info 或 --debug 选项运行以获取更多日志输出。
例外情况是： java.lang.NullPointerException at org.gradle.api.internal.changedetection.state.TreeSnapshotRepository.removeTreeSnapshotUsage(TreeSnapshotRepository.java：85) at org.gradle.api.internal.changedetection.state.CacheBackedFileSnapshotRepository.remove(CacheBackedFileSnapshotRepository.java：47) at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository$1$1.run(CacheBackedTaskHistoryRepository.java：81) at org.gradle.internal.Factory$1.create(Factory.java：22) at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java：192) at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java：175) at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java：106) at org.gradle.cache.internal.DefaultCacheFactory$ReferenceTrackingCache.useCache(DefaultCacheFactory.java：187) at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.useCache(DefaultTaskArtifactStateCacheAccess.java：60) at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository$1.update(CacheBackedTaskHistoryRepository.java：66) at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.afterTask(DefaultTaskArtifactStateRepository.java：135) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java：68) at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java：58) at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.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：53) at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java：43) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java：203) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java：185) at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java：66) at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java：50) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java：25) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java：110) at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java：37) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java：37) at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java：23) at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java：43) at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java：32) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java：37) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java：30) at org.gradle.initialization.DefaultGradleLauncher$4.run(DefaultGradleLauncher.java：153) at org.gradle.internal.Factory$1.create(Factory.java：22) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java：91) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java：53) at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java：150) at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java：32) at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java：98) at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java：92) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java：91) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java：63) at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java：92) at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java：83)at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java：99) at org.gradle.tooling.internal.provider.runner.BuildModelActionRunner.run(BuildModelActionRunner.java：46) at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java：35) at org.gradle.tooling.internal.provider.runner.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java：58) at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java：35) at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java：48) at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java：30) at org.gradle.launcher.exec.ContinuBuildActionExecuter.execute(ContinuBuildActionExecuter.java：81) at org.gradle.launcher.exec.ContinuBuildActionExecuter.execute(ContinuBuildActionExecuter.java：46) at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java：52) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java：36) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java：120) at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java：37) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java：120) at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java：26) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java：120) at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java：34) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java：120) at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java：74) at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java：72) at org.gradle.util.Swapper.swap(Swapper.java：38) at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java：72) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java：120) at org.gradle.launcher.daemon.server.health.DaemonHealthTracker.execute(DaemonHealthTracker.java：47) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java：120) at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java：60) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java：36) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java：120) at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java：72) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java：36) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java：120) at org.gradle.launcher.daemon.server.health.HintGCAfterBuild.execute(HintGCAfterBuild.java：41) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java：120) at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java：50) at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java：237) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java：54) at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java：40)
试试其中之一。 1. (顶部栏)构建>清洁项目 2. 建造>重建项目 3. 文件>使缓存无效
你可以试试这个 Gradle 命令：
./gradlew assembledebug --info --stacktrace --
或检查此答案。
就我而言，我正在使用Glide来显示图像。但出于某种原因，我用毕加索图书馆取代了格莱德图书馆。当我删除 Glide 依赖项时，我遇到了同样的错误。所以我只是把Glide依赖项放回去，即使我现在使用毕加索来显示图像。一切正常。这可能是由于一些依赖问题。