升级Android Studio 3.1.2后，ProGuard配置解析器出错（） _解析器

欠伸展肢体，吟咏心自愉。这篇文章主要讲述升级Android Studio 3.1.2后，ProGuard配置解析器出错？相关的知识，希望能为你提供帮助。
我已经将android studio从3.1升级到3.1.2。升级工作室后，我采取构建ProGuard配置解析器时发生错误。我正在为我的项目使用Dexguard（与ProGuard相同）。
规则：

-encryptstrings interface com.jas.digi.Utils.Constant { public static final java.lang.String *; }

错误：

ProGuard配置解析器错误：D： AndroidStudioProjectsprojectappdexguard-project.txt第41：0行在'-encryptstrings'中缺少EOF

完整日志：

org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformClassesWithAndroidGradleClassShrinkerForRelease'. at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:63) at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54) at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58) at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88) at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52) 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$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$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:124) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:80) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:105) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:99) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:625) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:580) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:99) 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) Caused by: com.android.build.gradle.shrinker.parser.ProguardParserException: ProGuard configuration parser error: D:AndroidStudioProjectsprojectappdexguard-project.txt line 41:0 missing EOF at '-encryptstrings' at com.android.build.gradle.shrinker.parser.ProguardParser.emitErrorMessage(ProguardParser.java:159) at org.antlr.runtime.BaseRecognizer.displayRecognitionError(BaseRecognizer.java:194) at org.antlr.runtime.BaseRecognizer.reportError(BaseRecognizer.java:186) at org.antlr.runtime.BaseRecognizer.recoverFromMismatchedToken(BaseRecognizer.java:613) at org.antlr.runtime.BaseRecognizer.match(BaseRecognizer.java:115) at com.android.build.gradle.shrinker.parser.ProguardParser.prog(ProguardParser.java:494) at com.android.build.gradle.shrinker.parser.GrammarActions.parse(GrammarActions.java:64) at com.android.build.gradle.shrinker.ProguardConfig.parse(ProguardConfig.java:33) at com.android.build.gradle.internal.transforms.BuiltInShrinkerTransform.getProguardFlags(BuiltInShrinkerTransform.java:216) at com.android.build.gradle.internal.transforms.BuiltInShrinkerTransform.fullRun(BuiltInShrinkerTransform.java:138) at com.android.build.gradle.internal.transforms.BuiltInShrinkerTransform.transform(BuiltInShrinkerTransform.java:130) at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:222) at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:218) at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:102) at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:213) at sun.reflect.GeneratedMethodAccessor559.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73) at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$IncrementalTaskAction.doExecute(DefaultTaskClassInfoStore.java:173) at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:134) at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:121) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:122) at org.gradle.internal.progress.DefaultBuildOperationExecutor$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:197) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:111) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92) ... 30 more

提前致谢！等待建议..
答案

更新了Gradle版本4.4

更新Android Studio版本后，我们还需要升级Gradle。
【升级Android Studio 3.1.2后，ProGuard配置解析器出错（）】所以我已经将Android Gradle版本3.1.3和Gradle更新到版本4.4。在gradle 4.4版中，也推荐使用android.enableAapt2。这引起了一些小问题。修复了基于android.enableAapt2的所有小问题，Build工作正常。