是否可以在gradle中为JavaCompile启用-Werror？

Question

我使用com.android.application插件在gradle中设置了一个Android项目.我希望javac lint警告触发错误而不仅仅是警告.

以下工作适用于警告:

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):

FAILURE:构建因异常而失败.

*出了什么问题:任务执行失败':app:compileDebugJava'.

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选项运行以获取更多日志输出.

建筑失败

使用--stacktrace调用gradle显示:

*异常是:org.gradle.api.tasks.TaskExecutionException:任务':app:compileDebugJava'的执行失败.在org.gradle上的org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)位于org.gradle.api.internal的org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)上的.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35) .tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:

是否添加-Werror不受支持？

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 Plugin用户指南的Android Lint支持

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