android Execution failed for task ':app:compileDebugJavaWithJavac'

转自：https://segmentfault.com/a/1190000014220112

    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)

在AndroidStudio(mac os)的terminal中输入命令

./gradlew compileDebug --stacktrace

windows下输入

gradlew compileDebug --stacktrace

查看日志

    * What went wrong:Task 'compileDebug' is ambiguous in root project 'DefineViewStudy'. Candidates are: 'compileDebugAidl', 'compileDebugAndroidTestAidl', 'compileDebugAndroidTestJavaWithJavac', 'compileDebugAndroidTestNdk', 'compileDebugAndroidTestRenderscript', 'compileDebugAndroidTestShaders', 'compileDebugAndroidTestSources', 'compileDebugJavaWithJavac', 'compileDebugNdk', 'compileDebugRenderscript', 'compileDebugShaders', 'compileDebugSources', 'compileDebugUnitTestJavaWithJavac', 'compileDebugUnitTestSources'.* Try:Run gradlew tasks to get a list of available tasks. Run with --info or --debug option to get more log output. Run with --scan to get full insights.* Exception is:org.gradle.execution.TaskSelectionException: Task 'compileDebug' is ambiguous in root project 'DefineViewStudy'. Candidates are: 'compileDebugAidl', 'compileDebugAndroidTestAidl', 'compileDebugAndroidTestJavaWithJavac', 'compileDebugAndroidTestNdk', 'compileDebugAndroidTestRenderscript', 'compileDebugAndroidTestShaders', 'compileDebugAndroidTestSources', 'compileDebugJavaWithJavac', 'compileDebugNdk', 'compileDebugRenderscript', 'compileDebugShaders', 'compileDebugSources', 'compileDebugUnitTestJavaWithJavac', 'compileDebugUnitTestSources'.

注意到这句话Task 'compileDebug' is ambiguous in root project 'DefineViewStudy'. 单词
ambiguous是模糊不清的意思.尝试着把命令改为

./gradlew compileDebugJavaWithJavac

windows下输入

gradlew compileDebugJavaWithJavac

这次打印的信息很明了了.

    /Users/xxx/work/workspace/github/DefineViewStudy/app/src/main/java/com/idealcn/define/view/ui/MainFragment.java:70: 错误: 找不到符号            case R.id.round_cake:                     ^  符号:   变量 round_cake  位置: 类 id/Users/guoning/work/workspace/github/DefineViewStudy/app/src/main/java/com/idealcn/define/view/ui/MainFragment.java:74: 错误: 找不到符号            case R.id.drag:                     ^  符号:   变量 drag  位置: 类 id注: 某些输入文件使用或覆盖了已过时的 API。注: 有关详细信息, 请使用 -Xlint:deprecation 重新编译。2 个错误

原来是view的id找不到了.彻底解决了!

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