【发布时间】：2014-07-09 17:29:26
【问题描述】：
我每次尝试进行 gradle 构建时都会收到此错误消息。我最近在此之前进行了构建，并且创建的应用程序没有任何问题。我没有对 build.gradle 文件进行任何更改。这是什么原因造成的？
:app:preBuild
......
:app:processDebugResources
:app:generateDebugSources
:app:compileDebugJava FAILED
Error:Execution failed for task ':app:compileDebugJava'.
> java.lang.NullPointerException
我使用的是 Android Studio 0.8.1 版
这里是 gradle 堆栈跟踪：
* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:compileDebugJava'.
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:42)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:289)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTask(AbstractTaskPlanExecutor.java:79)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:63)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:51)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:23)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:86)
at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67)
at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:54)
at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:166)
at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:113)
at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:81)
at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:64)
at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33)
at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:35)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26)
at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:50)
at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:171)
at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:201)
at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:174)
at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:170)
at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:139)
at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
at org.gradle.launcher.Main.doAction(Main.java:46)
at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
at org.gradle.launcher.Main.main(Main.java:37)
at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:50)
at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:32)
at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:33)
at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:130)
at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)
Caused by: 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 org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler.execute(Jdk6JavaCompiler.java:45)
at org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler.execute(Jdk6JavaCompiler.java:38)
at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:96)
at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:49)
at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:35)
at org.gradle.api.internal.tasks.compile.DelegatingJavaCompiler.execute(DelegatingJavaCompiler.java:29)
at org.gradle.api.internal.tasks.compile.DelegatingJavaCompiler.execute(DelegatingJavaCompiler.java:20)
at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:33)
at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:24)
at org.gradle.api.tasks.compile.Compile.performCompilation(Compile.java:165)
at org.gradle.api.tasks.compile.Compile.compile(Compile.java:153)
at org.gradle.api.tasks.compile.Compile.compile(Compile.java:87)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:63)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.doExecute(AnnotationProcessingTaskFactory.java:236)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:212)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.execute(AnnotationProcessingTaskFactory.java:223)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:201)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:533)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:516)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
... 46 more
Caused by: java.lang.NullPointerException
at dagger.internal.codegen.Util.getAnnotation(Util.java:192)
at dagger.internal.codegen.GraphAnalysisProcessor.process(GraphAnalysisProcessor.java:107)
at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:793)
at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$200(JavacProcessingEnvironment.java:97)
at com.sun.tools.javac.processing.JavacProcessingEnvironment$DiscoveredProcessors$ProcessorStateIterator.runContributingProcs(JavacProcessingEnvironment.java:644)
at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1027)
at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1185)
at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1108)
at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:824)
at com.sun.tools.javac.main.Main.compile(Main.java:439)
... 68 more
这是我的 build.gradle（有点乱）：
buildscript {
repositories {
mavenCentral()
maven { url 'http://download.crashlytics.com/maven' }
}
dependencies {
classpath 'com.jakewharton.sdkmanager:gradle-plugin:0.9.+'
classpath 'com.crashlytics.tools.gradle:crashlytics-gradle:1.+'
}
}
apply plugin: 'android-sdk-manager'
apply plugin: 'android'
apply plugin: 'crashlytics'
repositories {
maven { url 'http://download.crashlytics.com/maven' }
}
android {
signingConfigs {
release {
storeFile file("")
storePassword ''
keyAlias ''
keyPassword ''
}
debug {
storeFile file('/home/andreperkins/.android/debug.keystore')
}
}
//noinspection GroovyAssignabilityCheck
compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
//noinspection GroovyAssignabilityCheck
buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
defaultConfig {
applicationId 'com.liveauctioneers.and'
//noinspection GroovyAssignabilityCheck
minSdkVersion Integer.parseInt(project.ANDROID_BUILD_MIN_SDK_VERSION)
//noinspection GroovyAssignabilityCheck
targetSdkVersion Integer.parseInt(project.ANDROID_BUILD_TARGET_SDK_VERSION)
versionCode 7
versionName '3.0'
testInstrumentationRunner 'com.google.android.apps.common.testing.testrunner.GoogleInstrumentationTestRunner'
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
//noinspection GroovyAssignabilityCheck
signingConfig signingConfigs.release
}
debug {
applicationIdSuffix '.debug'
versionNameSuffix '-DEBUG'
zipAlign false
}
qa {
debuggable false
jniDebugBuild false
renderscriptDebugBuild false
runProguard false
applicationIdSuffix '.qa'
versionNameSuffix '-QA'
zipAlign true
//noinspection GroovyAssignabilityCheck
signingConfig signingConfigs.release
}
}
productFlavors {
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_7
targetCompatibility JavaVersion.VERSION_1_7
}
packagingOptions {
exclude 'LICENSE.txt'
exclude 'META-INF/services/javax.annotation.processing.Processor'
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile project(':facebook')
provided 'com.squareup.dagger:dagger-compiler:1.2.1'
//mockito dependencies
androidTestCompile files('libs/dexmaker-mockito-1.0.jar')
androidTestCompile 'org.mockito:mockito-core:1.9.5'
androidTestCompile files('libs/dexmaker-1.0.jar')
//espresso dependencies
/*androidTestCompile files('libs/espresso-1.1.jar')
androidTestCompile files('libs/testrunner-1.1.jar')
androidTestCompile files('libs/testrunner-runtime-1.1.jar')
*/ androidTestCompile 'com.google.guava:guava:16.0'
/*androidTestCompile 'org.hamcrest:hamcrest-core:1.1'
androidTestCompile 'org.hamcrest:hamcrest-integration:1.1'
androidTestCompile 'org.hamcrest:hamcrest-library:1.1'*/
androidTestCompile 'com.squareup.spoon:spoon-client:1.1.1'
androidTestCompile('com.jakewharton.espresso:espresso:1.1-r3') {
exclude group: 'com.squareup.dagger'
}
compile 'com.jakewharton:butterknife:4.0.+'
compile 'com.squareup.dagger:dagger:1.2.1'
compile 'com.squareup.okhttp:okhttp:1.3.+'
compile 'com.squareup.retrofit:retrofit:1.5.1'
compile 'com.google.code.gson:gson:2.2.+'
compile 'com.crashlytics.android:crashlytics:1.+'
compile 'com.squareup:otto:1.3.5'
compile 'javax.annotation:javax.annotation-api:1.2'
compile 'com.google.code.findbugs:jsr305:1.3.9'
// You must install or update the Support Repository through the SDK manager to use this dependency.
compile 'com.android.support:support-v13:19.0.1'
compile 'com.j256.ormlite:ormlite-android:4.43'
compile 'com.j256.ormlite:ormlite-core:4.43'
}
【问题讨论】：
-
@AlonBurg 我修好了。我认为这与 dagger 以及工作室自动为您生成与构建 xml 资源相关的文件有关。由于我不知道原因，因此我暂时保留这个问题。我为解决这个问题所做的是运行“./gradlew build --debug”并看到一些关于我的一个片段的视图注入器（因为我也使用 Butterknife 进行视图注入）我所做的是删除与关联的 xml 文件该片段，然后我删除了每个值文件夹中的所有 ref.xml，因为我不需要它们。尝试类似的方法，让我知道结果如何。
标签： android gradle android-studio ormlite dagger