Gradle在Android Studio中构建项目时给出了NullPointerException

请有人帮我修复这个

Gradle

（2.14.1）

NullPointerException

错误，这个错误在我的Android Studio（2.2）崩溃后开始出现。我是个新手，所以我不知道该怎么处理

我试过：

• 清理项目
• 重新安装Android Studio和SDK
• 更新JRE（8u101）

我不知道还有什么办法来解决这个问题

这是带有

--stacktrace

--debug

的

gradle

控制台中的错误：

08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter] 
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter] FAILURE: Build failed with an exception.
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter] 
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter] * What went wrong:
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter] java.lang.NullPointerException (no error message)
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter] 
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter] * Exception is:
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter] java.lang.NullPointerException
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.changedetection.state.TreeSnapshotRepository.removeTreeSnapshotUsage(TreeSnapshotRepository.java:85)
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.changedetection.state.CacheBackedFileSnapshotRepository.remove(CacheBackedFileSnapshotRepository.java:47)
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository$1$1.run(CacheBackedTaskHistoryRepository.java:84)
08:33:16.858 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.internal.Factories$1.create(Factories.java:22)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:192)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:175)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:106)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.cache.internal.DefaultCacheFactory$ReferenceTrackingCache.useCache(DefaultCacheFactory.java:187)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.useCache(DefaultTaskArtifactStateCacheAccess.java:60)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository$1.update(CacheBackedTaskHistoryRepository.java:66)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.afterTask(DefaultTaskArtifactStateRepository.java:135)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:68)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
08:33:16.859 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:203)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:185)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:66)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:25)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:110)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.initialization.DefaultGradleLauncher$4.run(DefaultGradleLauncher.java:153)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.internal.Factories$1.create(Factories.java:22)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:53)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:150)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)
08:33:16.860 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:98)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:92)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:63)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:92)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:83)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:99)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.tooling.internal.provider.runner.BuildModelActionRunner.run(BuildModelActionRunner.java:46)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.tooling.internal.provider.runner.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:58)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:48)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:30)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:81)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:46)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:52)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37)
08:33:16.861 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
08:33:16.862 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
08:33:16.862 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
08:33:16.862 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
08:33:16.862 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
08:33:16.862 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
08:33:16.862 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
08:33:16.862 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.util.Swapper.swap(Swapper.java:38)
08:33:16.862 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
08:33:16.863 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
08:33:16.863 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.health.DaemonHealthTracker.execute(DaemonHealthTracker.java:47)
08:33:16.863 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
08:33:16.863 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
08:33:16.863 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
08:33:16.863 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
08:33:16.864 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72)
08:33:16.864 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
08:33:16.864 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
08:33:16.864 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.health.HintGCAfterBuild.execute(HintGCAfterBuild.java:41)
08:33:16.864 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
08:33:16.864 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
08:33:16.864 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:237)
08:33:16.864 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
08:33:16.864 [ERROR] [org.gradle.BuildExceptionReporter]    at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
08:33:16.864 [ERROR] [org.gradle.BuildExceptionReporter] 

---

提前感谢。

我在Android Studio/SDK端尝试的东西都不管用

所以我不得不走人工路线。一:

• 转到

  AndroidStudioProjects

  目录并手动更改名称（只是在目录名称的末尾添加了“-backup”）
• 在Android Studio中使用原始项目名称和包名称创建新项目，然后关闭Android Studio
• 返回到

  AndroidStudioProjects

  目录，并将备份

  [project]\app\build.gradle

  文件中的依赖项部分复制到新项目中的同一文件中
• 将

  [project]\app\src\main

  目录中的所有内容从旧项目复制到新项目
• 打开Android Studio并选择了

  Build>Rebuild项目

• 然后运行这个项目，它成功了

---

现在开始修复VCS…-!

确保如果您有local.properties，那么sdk.dir和ndk.dir（如果已定义）的路径实际存在。在我的例子中，我的项目没有使用ndk，但是我的local.properties是从一个使用ndk的项目复制的，ndk目录无效。我认为这并不重要，但我下载了ndk并将其解压缩到local.properties中的路径中，现在它可以工作了。我想我本可以同样轻松地在local.properties中注释/删除该行，但这并没有那么有趣：）

在app

build.gradle

文件中使用最新的

2.2.0

gradle构建工具。您有构建异常您是否缺少任何依赖项？当我安装Android Studio 2.2时，它提示我将gradle更新为2.2.0，我接受了。在Android Studio崩溃之前，它一直运行良好。在我的

build.gradle

目录中是2.2.0，但在我的

C:\Program Files\Android\Android Studio\gradle

目录中只有2.14.1。我认为这种依赖在某个地方被破坏了。我如何强制它重新更新到2.2.0？问题解决了吗？我也面临着这个问题。我打算卸载Android Studio SDK，删除

C:\Users\user\.AndroidStudio2.2

和

C:\Users\user\.gradle

文件夹，以及

C:\Program Files\Android

文件夹。然后从头开始重新安装，并尝试运行该应用程序，但它仍然说同样的话。所以这似乎是项目内部的东西，但我不知道是什么。