相关疑难解决方法(0)

我正在使用最新的稳定版Android Studio-3.4。当我构建一个调试apk（不带proguard）时，它工作正常。但是问题出在发布版本时。默认情况下，它使用最新的R8收缩器。

它给了我一个内存不足的错误。我尝试更改gradle.properties文件中的值，如下所示，这在执行transformClassesAndResourcesWithR8ForRelease任务时发生。

org.gradle.jvmargs=-Xmx4g -XX:MaxPermSize=2g -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8

它仍然给我同样的错误。

最后，我尝试通过在gradle.properties文件中使用此行来禁用R8，

android.enableR8=false

但是仍然在构建任务中，我可以看到它正在执行此任务transformClassesAndResourcesWithR8ForRelease并给我同样的错误。

这些是错误日志

org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':appName:transformClassesAndResourcesWithR8ForRelease'.
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:95)
at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:91)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:57)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:119)
at org.gradle.api.internal.tasks.execution.ResolvePreviousStateExecuter.execute(ResolvePreviousStateExecuter.java:43)
at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:93)
at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:45)
at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:94)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:56)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:55)
at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:67)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:49)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:315)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:305)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:175)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:101)
at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:49)
at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:43)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:355)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:134)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:129)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:202)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:193) …

我刚刚将 Android Studio 更新到v3.4.1

现在我无法在设置 minifyEnabled 时生成签名的应用程序 true

我知道现在默认的代码压缩器是R8。正如日志所说，这就是问题所在。如果 minifyEnabled 设置为 ，我可以毫无问题地生成签名的应用程序false。

这发生在我所有的项目中。

继续运行：

• 视窗 10 64 位
• 内存 8 GB
• 英特尔 i5 2320 处理器

我该如何解决？谢谢你

构建.gradle

buildTypes {
    release {
        minifyEnabled true
        shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
}

proguard-rules.pro

-dontobfuscate

完整日志

org.gradle.internal.exceptions.LocationAwareException: Execution failed for task ':app:transformClassesAndResourcesWithR8ForRelease'.
    at org.gradle.initialization.exception.DefaultExceptionAnalyser.transform(DefaultExceptionAnalyser.java:99)
    at org.gradle.initialization.exception.DefaultExceptionAnalyser.collectFailures(DefaultExceptionAnalyser.java:65)
    at org.gradle.initialization.exception.MultipleBuildFailuresExceptionAnalyser.transform(MultipleBuildFailuresExceptionAnalyser.java:39)
    at org.gradle.initialization.exception.StackTraceSanitizingExceptionAnalyser.transform(StackTraceSanitizingExceptionAnalyser.java:29)
    at org.gradle.initialization.DefaultGradleLauncher.finishBuild(DefaultGradleLauncher.java:174)
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:165)
    at org.gradle.initialization.DefaultGradleLauncher.executeTasks(DefaultGradleLauncher.java:134)
    at org.gradle.internal.invocation.GradleBuildController$1.execute(GradleBuildController.java:58)
    at org.gradle.internal.invocation.GradleBuildController$1.execute(GradleBuildController.java:55)
    at org.gradle.internal.invocation.GradleBuildController$3.create(GradleBuildController.java:82)
    at org.gradle.internal.invocation.GradleBuildController$3.create(GradleBuildController.java:75)
    at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:183)
    at org.gradle.internal.work.StopShieldingWorkerLeaseService.withLocks(StopShieldingWorkerLeaseService.java:40) …