android错误：RealmClass注释不支持嵌套类

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我尝试在项目中包含Realm db但遇到了问题。

我有嵌套类：

@RealmClass
public class Shops implements RealmModel {

    RealmList<Shop> data;
    Meta meta;

    public Shops() {
    }

    public RealmList<Shop> getShops() {
        return data;
    }

    public Pagination getPagination() {
        if (meta == null) return null;
        if (meta.pagination == null) return null;
        return meta.pagination;
    }

    private static class Meta extends RealmObject {
        Pagination pagination;
    }

    public static class Pagination extends RealmObject {
        Links links; // ...
    }

    public static class Links extends RealmObject {
        String next;
        public String previous;
        //...
    }
}

我试着改变代码。但没有任何帮助。什么问题，请告诉我？

它解决了！

但接下来。

在Realm出现问题后，我在编译时遇到了dagger 2的新问题

Error:(10, 33) error: cannot find symbol class DaggerAppComponent
Error:java.lang.RuntimeException: java.lang.NullPointerException
Error:java.lang.NullPointerException

清理和重建项目，也删除.gradle和重建没有帮助我。

项目代码没有太大变化，只添加了Realm db。

有什么问题，请告诉我？

日志：

20:58:12.515 [ERROR] [system.err] import xxx.xxx.xxx.dagger.DaggerAppComponent;
20:58:12.515 [ERROR] [system.err]                                 ^
20:58:12.515 [ERROR] [system.err]   symbol:   class DaggerAppComponent
20:58:12.515 [ERROR] [system.err]   location: package xxx.xxx.xxx.dagger
20:58:12.633 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
20:58:12.633 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] FAILURE: Build failed with an exception.
20:58:12.634 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
20:58:12.634 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * What went wrong:
20:58:12.634 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Execution failed for task ':app:compileDebugJavaWithJavac'.
20:58:12.634 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] > java.lang.NullPointerException
20:58:12.635 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
20:58:12.636 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Exception is:
20:58:12.636 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:compileDebugJavaWithJavac'.
20:58:12.636 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:84)
20:58:12.637 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:55)
20:58:12.637 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62)
20:58:12.637 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
20:58:12.637 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88)
20:58:12.637 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:46)
20:58:12.638 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:51)
20:58:12.638 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
20:58:12.639 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
20:58:12.639 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
20:58:12.639 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.execute(DefaultTaskGraphExecuter.java:236)
20:58:12.639 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.execute(DefaultTaskGraphExecuter.java:228)
20:58:12.640 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.Transformers$4.transform(Transformers.java:169)
20:58:12.640 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:106)
20:58:12.640 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:61)
20:58:12.641 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:228)
20:58:12.641 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:215)
20:58:12.641 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:77)
20:58:12.641 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:58)
20:58:12.642 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:32)
20:58:12.642 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:113)
20:58:12.642 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
20:58:12.642 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
20:58:12.643 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
20:58:12.643 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
20:58:12.643 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
20:58:12.643 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
20:58:12.644 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
20:58:12.644 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.initialization.DefaultGradleLauncher$3.execute(DefaultGradleLauncher.java:196)
20:58:12.645 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.initialization.DefaultGradleLauncher$3.execute(DefaultGradleLauncher.java:193)
20:58:12.645 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.Transformers$4.transform(Transformers.java:169)
20:58:12.646 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:106)
20:58:12.646 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:56)
20:58:12.647 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:193)
20:58:12.647 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:119)
20:58:12.647 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:102)
20:58:12.647 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.exec.GradleBuildController.run(GradleBuildController.java:71)
20:58:12.649 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.tooling.internal.provider.runner.BuildModelActionRunner.run(BuildModelActionRunner.java:50)
20:58:12.649 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
20:58:12.649 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.tooling.internal.provider.runner.RunAsBuildOperationBuildActionRunner$1.execute(RunAsBuildOperationBuildActionRunner.java:43)
20:58:12.650 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.tooling.internal.provider.runner.RunAsBuildOperationBuildActionRunner$1.execute(RunAsBuildOperationBuildActionRunner.java:40)
20:58:12.650 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.Transformers$4.transform(Transformers.java:169)
20:58:12.650 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:106)
20:58:12.650 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:56)
20:58:12.651 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.tooling.internal.provider.runner.RunAsBuildOperationBuildActionRunner.run(RunAsBuildOperationBuildActionRunner.java:40)
20:58:12.651 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.tooling.internal.provider.runner.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:75)
20:58:12.651 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
20:58:12.652 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:41)
20:58:12.652 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26)
20:58:12.652 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:75)
20:58:12.652 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:49)
20:58:12.653 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:44)
20:58:12.653 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:29)
20:58:12.653 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:67)
20:58:12.653 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
20:58:12.654 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
20:58:12.654 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:47)
20:58:12.654 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
20:58:12.655 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
20:58:12.655 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
20:58:12.655 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
20:58:12.656 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
20:58:12.656 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
20:58:12.656 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
20:58:12.657 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.util.Swapper.swap(Swapper.java:38)
20:58:12.657 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
20:58:12.658 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
20:58:12.658 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)
20:58:12.659 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
20:58:12.659 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
20:58:12.659 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
20:58:12.660 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
20:58:12.660 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72)
20:58:12.661 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
20:58:12.661 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
20:58:12.662 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
20:58:12.662 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:297)
20:58:12.662 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
20:58:12.663 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
20:58:12.663 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Caused by: java.lang.RuntimeException: java.lang.NullPointerException
20:58:12.663 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.main.Main.compile(Main.java:553)
20:58:12.664 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
20:58:12.664 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
20:58:12.664 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:46)
20:58:12.664 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:33)
20:58:12.664 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:104)
20:58:12.665 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:53)
20:58:12.665 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:38)
20:58:12.665 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:35)
20:58:12.665 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:25)
20:58:12.666 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.tasks.compile.JavaCompile.performCompilation(JavaCompile.java:206)
20:58:12.666 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:187)
20:58:12.666 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:130)
20:58:12.666 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.android.build.gradle.tasks.factory.AndroidJavaCompile.compile(AndroidJavaCompile.java:49)
20:58:12.667 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
20:58:12.667 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$IncrementalTaskAction.doExecute(DefaultTaskClassInfoStore.java:163)
20:58:12.667 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:134)
20:58:12.667 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:123)
20:58:12.668 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:95)
20:58:12.668 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:76)
20:58:12.668 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   ... 78 more
20:58:12.668 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Caused by: java.lang.NullPointerException
20:58:12.669 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at io.realm.processor.Utils.initialize(Utils.java:37)
20:58:12.669 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at io.realm.processor.RealmProcessor.process(RealmProcessor.java:158)
20:58:12.669 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:794)
20:58:12.670 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:705)
20:58:12.670 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1800(JavacProcessingEnvironment.java:91)
20:58:12.670 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1035)
20:58:12.671 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1176)
20:58:12.671 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1170)
20:58:12.671 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:856)
20:58:12.672 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   at com.sun.tools.javac.main.Main.compile(Main.java:523)
20:58:12.672 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]   ... 97 more
20:58:12.672 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]
答案

将其添加到gradle中。

compile 'io.realm:realm-annotations-processor:4.0.0'

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