Question

我使用com.android.application插件在gradle中设置了Android项目。我希望javac lint警告触发错误而不仅仅是警告。

以下情况适用于警告：

tasks.withType(JavaCompile).all {
    options.compilerArgs.add("-Xlint:all")
}

但是，添加-Werror：

tasks.withType(JavaCompile).all {
    options.compilerArgs.add("-Xlint:all")
    options.compilerArgs.add("-Werror")
}

导致构建完全失败（不是以正确的方式）：

失败：构建因异常而失败。

*出了什么问题：任务执行失败＆＃39;：app：compileDebugJava＆＃39;。


显示java.lang.NullPointerException


*尝试：使用--stacktrace选项运行以获取堆栈跟踪。使用--info或--debug选项运行以获得更多日志输出。

建立失败

使用--stacktrace调用gradle显示：

*异常是：org.gradle.api.tasks.TaskExecutionException：任务＆＃39;：app：compileDebugJava＆＃39;执行失败。在 org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions（ExecuteActionsTaskExecuter.java:69）在 org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute（ExecuteActionsTaskExecuter.java:46）在 org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute（PostExecutionAnalysisTaskExecuter.java:35）在 org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute（SkipUpToDateTaskExecuter.java:64）在 org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute（ValidatingTaskExecuter.java:58）在 org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute（SkipEmptySourceFilesTaskExecuter.java:42）在 org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute（SkipTaskWithNoActionsExecuter.java:52）在 org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute（SkipOnlyIfTaskExecuter.java:53）在 org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute（ExecuteAtMostOnceTaskExecuter.java:43）在 org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure（AbstractTask.java:305）在 org.gradle.execution.taskgraph.AbstractTaskPlanExecutor $ TaskExecutorWorker.executeTask（AbstractTaskPlanExecutor.java:79）在 org.gradle.execution.taskgraph.AbstractTaskPlanExecutor $ TaskExecutorWorker.processTask（AbstractTaskPlanExecutor.java:63）在 org.gradle.execution.taskgraph.AbstractTaskPlanExecutor $ TaskExecutorWorker.run（AbstractTaskPlanExecutor.java:51）在 org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process（DefaultTaskPlanExecutor.java:23）在 org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute（DefaultTaskGraphExecuter.java:88）在 org.gradle.execution.SelectedTaskExecutionAction.execute（SelectedTaskExecutionAction.java:29）在 org.gradle.execution.DefaultBuildExecuter.execute（DefaultBuildExecuter.java:62）在 org.gradle.execution.DefaultBuildExecuter.access $ 200（DefaultBuildExecuter.java:23）在 org.gradle.execution.DefaultBuildExecuter $ 2.proceed（DefaultBuildExecuter.java:68）在 org.gradle.execution.DryRunBuildExecutionAction.execute（DryRunBuildExecutionAction.java:32）在 org.gradle.execution.DefaultBuildExecuter.execute（DefaultBuildExecuter.java:62）在 org.gradle.execution.DefaultBuildExecuter.execute（DefaultBuildExecuter.java:55）在 org.gradle.initialization.DefaultGradleLauncher.doBuildStages（DefaultGradleLauncher.java:149）在 org.gradle.initialization.DefaultGradleLauncher.doBuild（DefaultGradleLauncher.java:106）在 org.gradle.initialization.DefaultGradleLauncher.run（DefaultGradleLauncher.java:86）在 org.gradle.launcher.exec.InProcessBuildActionExecuter $ DefaultBuildController.run（InProcessBuildActionExecuter.java:80）在 org.gradle.launcher.cli.ExecuteBuildAction.run（ExecuteBuildAction.java:33）在 org.gradle.launcher.cli.ExecuteBuildAction.run（ExecuteBuildAction.java:24）在 org.gradle.launcher.exec.InProcessBuildActionExecuter.execute（InProcessBuildActionExecuter.java:36）在 org.gradle.launcher.exec.InProcessBuildActionExecuter.execute（InProcessBuildActionExecuter.java:26）在org.gradle.launcher.cli.RunBuildAction.run（RunBuildAction.java:51）在 org.gradle.internal.Actions $ RunnableActionAdapter.execute（Actions.java:171）在 org.gradle.launcher.cli.CommandLineActionFactory $ ParseAndBuildAction.execute（CommandLineActionFactory.java:237）在 org.gradle.launcher.cli.CommandLineActionFactory $ ParseAndBuildAction.execute（CommandLineActionFactory.java:210）在 org.gradle.launcher.cli.JavaRuntimeValidationAction.execute（JavaRuntimeValidationAction.java:35）在 org.gradle.launcher.cli.JavaRuntimeValidationAction.execute（JavaRuntimeValidationAction.java:24）在 org.gradle.launcher.cli.CommandLineActionFactory $ WithLogging.execute（CommandLineActionFactory.java:206）在 org.gradle.launcher.cli.CommandLineActionFactory $ WithLogging.execute（CommandLineActionFactory.java:169）在 org.gradle.launcher.cli.ExceptionReportingAction.execute（ExceptionReportingAction.java:33）在 org.gradle.launcher.cli.ExceptionReportingAction.execute（ExceptionReportingAction.java:22）在org.gradle.launcher.Main.doAction（Main.java:33）at org.gradle.launcher.bootstrap.EntryPoint.run（EntryPoint.java:45）at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit（ProcessBootstrap.java:54）在 org.gradle.launcher.bootstrap.ProcessBootstrap.run（ProcessBootstrap.java:35）在org.gradle.launcher.GradleMain.main（GradleMain.java:23）引起： java.lang.RuntimeException：java.lang.NullPointerException at com.sun.tools.javac.main.Main.compile（Main.java:469）at com.sun.tools.javac.api.JavacTaskImpl.call（JavacTaskImpl.java:132）at at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute（JdkJavaCompiler.java:42）在 org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute（JdkJavaCompiler.java:35）在 org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors（NormalizingJavaCompiler.java:97）在 org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute（NormalizingJavaCompiler.java:50）在 org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute（NormalizingJavaCompiler.java:36）在 org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute（CleaningJavaCompilerSupport.java:34）在 org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute（CleaningJavaCompilerSupport.java:25）在 org.gradle.api.tasks.compile.JavaCompile.performCompilation（JavaCompile.java:158）在 org.gradle.api.tasks.compile.JavaCompile.compile（JavaCompile.java:138）在 org.gradle.api.tasks.compile.JavaCompile.compile（JavaCompile.java:92）在org.gradle.internal.reflect.JavaMethod.invoke（JavaMethod.java:63）在 org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory $ IncrementalTaskAction.doExecute（AnnotationProcessingTaskFactory.java:235）在 org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory $ StandardTaskAction.execute（AnnotationProcessingTaskFactory.java:211）在 org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory $ IncrementalTaskAction.execute（AnnotationProcessingTaskFactory.java:222）在 org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory $ StandardTaskAction.execute（AnnotationProcessingTaskFactory.java:200）在 org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction（ExecuteActionsTaskExecuter.java:80）在 org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions（ExecuteActionsTaskExecuter.java:61） ... 44更多引起：java.lang.NullPointerException at dagger.internal.codegen.Util.getAnnotation（Util.java:192）at dagger.internal.codegen.GraphAnalysisProcessor.process（GraphAnalysisProcessor.java:105）在 com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor（JavacProcessingEnvironment.java:793）在 com.sun.tools.javac.processing.JavacProcessingEnvironment.access $ 200（JavacProcessingEnvironment.java:97）在 com.sun.tools.javac.processing.JavacProcessingEnvironment $ DiscoveredProcessors $ ProcessorStateIterator.runContributingProcs（JavacProcessingEnvironment.java:644）在 com.sun.tools.javac.processing.JavacProcessingEnvironment $ Round.run（JavacProcessingEnvironment.java:1027）在 com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing（JavacProcessingEnvironment.java:1185）在 com.sun.tools.javac.main.JavaCompiler.processAnnotations（JavaCompiler.java:1108）在 com.sun.tools.javac.main.JavaCompiler.compile（JavaCompiler.java:824）在com.sun.tools.javac.main.Main.compile（Main.java:439）... 62更多

是否添加-Werror不支持？

Answer 1

javac lint

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.0.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
    gradle.projectsEvaluated {
        tasks.withType(JavaCompile) {
            options.compilerArgs << "-Xlint:all" << "-Werror"
        }
    }
}

结果将是下一个

....
:app:compileDebugJava                 
D:\Android\stack-overflow\ui\app\src\main\java\com\tivogi\ui\activity\MainActivity.java:22: warning: [deprecation] getLastNonConfigurationInstance() in Activity has been deprecated
        getLastNonConfigurationInstance();
        ^                             
error: warnings found and -Werror specified
1 error                               
1 warning                             
:app:compileDebugJava FAILED          

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDebugJava'.
> Compilation failed; see the compiler error output for details.

* Try:        
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED  

Total time: 2.421 secs

Android Lint

来自Gradle插件用户指南中的Android Lint support

android {
    lintOptions {
        ...
        // if true, treat all warnings as errors
        warningsAsErrors true
        ...
    }
}

是否可以在gradle中为JavaCompile启用-Werror？

1 个答案: