안드로이드 스튜디오 R 인식불가 해결

org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:processDebugResources'.

at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100)

at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)

at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)

at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62)

at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)

at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:60)

at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97)

at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:87)

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:199)

at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)

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:123)

at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)

at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)

at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)

at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:626)

at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:581)

at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)

at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)

at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)

at java.lang.Thread.run(Thread.java:745)

Caused by: org.gradle.tooling.BuildException: Failed to process resources, see aapt output above for details.

at com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask.invokeAaptForSplit(LinkApplicationAndroidResourcesTask.java:512)

at com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask.doFullTaskAction(LinkApplicationAndroidResourcesTask.java:249)

at com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.java:106)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)

at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:46)

at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)

at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)

at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:121)

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:199)

at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)

at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:110)

at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92)

... 32 more

Suppressed: java.lang.RuntimeException: Some file processing failed, see logs for details

at com.android.builder.internal.aapt.QueuedResourceProcessor.waitForAll(QueuedResourceProcessor.java:121)

at com.android.builder.internal.aapt.QueuedResourceProcessor.end(QueuedResourceProcessor.java:141)

at com.android.builder.internal.aapt.v2.QueueableAapt2.close(QueueableAapt2.java:104)

at com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask.doFullTaskAction(LinkApplicationAndroidResourcesTask.java:293)

... 48 more

Caused by: com.android.ide.common.process.ProcessException: Failed to execute aapt

at com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:809)

at com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:797)

at com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask.invokeAaptForSplit(LinkApplicationAndroidResourcesTask.java:491)

... 49 more

Caused by: java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.android.builder.internal.aapt.v2.Aapt2Exception: AAPT2 error: check logs for details

at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:503)

at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:482)

at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:79)

at com.android.builder.internal.aapt.AbstractAapt.link(AbstractAapt.java:34)

at com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:807)

... 51 more

Caused by: java.util.concurrent.ExecutionException: com.android.builder.internal.aapt.v2.Aapt2Exception: AAPT2 error: check logs for details

at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:503)

at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:462)

at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:79)

at com.android.builder.internal.aapt.v2.QueueableAapt2.lambda$makeValidatedPackage$1(QueueableAapt2.java:166)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

... 1 more

Caused by: com.android.builder.internal.aapt.v2.Aapt2Exception: AAPT2 error: check logs for details

at com.android.builder.png.AaptProcess$NotifierProcessOutput.handleOutput(AaptProcess.java:443)

at com.android.builder.png.AaptProcess$NotifierProcessOutput.err(AaptProcess.java:395)

at com.android.builder.png.AaptProcess$ProcessOutputFacade.err(AaptProcess.java:312)

at com.android.utils.GrabProcessOutput$1.run(GrabProcessOutput.java:104)

에러 내용 엄청 길다. 

여러 원인중 두가지는 아래와 같다.

1.  buildTools의 버전이 맞지 않을 경우.

참고 : https://stackoverflow.com/questions/20737200/execution-failed-appprocessdebugresources-android-studio

2. xml의 내용에 이상이 있는 경우

황당하게도 나는 이 경우에 속한다.

컴포넌트의 이름을 null이라고 해버렸다.. ㅋㅋㅋㅋ 공간차지용이라 딱히 이름에 애정을 갖지 않고 만들어서 아무생각이 없었다.

코드를 직접 짰다면 이런 실수는 안했을텐데, 디자인에서 이름을 짓다보니 의식을 못했다. (핑계중..)