问题
I want to use lambdas in my project so I decided to switch to Java 1.8. Android Studio (2.1.3) forced me to enable jackOptions. Also I did install Java 1.8 on my mac and when I run javac -version in terminal I get javac 1.8.0_101 and the JDK in android studio points to the right one.
When I try to build my project, gradle gets stuck on: :app:compileDebugJavaWithJack
I did the following and nothing worked:
- gradlew clean
- git clean -fdx and reimport the project
- gradlew --stacktrace assemble
If I revert back to Java 1.7 I lose the lambdas feature but project builds properly.
Any ideas what could be the problem?
UPDATE
Ok so after waiting for more than 5 minutes finally gradle did spit the following error:
ERROR: Dex writing phase: classes.dex has too many IDs. Try using multi-dex
com.android.jack.api.v01.CompilationException: Dex writing phase: classes.dex has too many IDs. Try using multi-dex
at com.android.jack.api.v01.impl.Api01ConfigImpl$Api01CompilationTaskImpl.run(Api01ConfigImpl.java:113)
at com.android.builder.core.AndroidBuilder.convertByteCodeUsingJackApis(AndroidBuilder.java:1852)
at com.android.builder.core.AndroidBuilder.convertByteCodeUsingJack(AndroidBuilder.java:1679)
at com.android.build.gradle.internal.transforms.JackTransform.runJack(JackTransform.java:221)
at com.android.build.gradle.internal.transforms.JackTransform.transform(JackTransform.java:195)
at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:178)
at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:174)
at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:156)
at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:173)
at sun.reflect.GeneratedMethodAccessor412.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.doExecute(AnnotationProcessingTaskFactory.java:245)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:221)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.execute(AnnotationProcessingTaskFactory.java:232)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:210)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:66)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:203)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:185)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:66)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.android.jack.JackAbortException: Dex writing phase: classes.dex has too many IDs. Try using multi-dex
at com.android.jack.backend.dex.DexFileWriter.run(DexFileWriter.java:90)
at com.android.jack.backend.dex.DexFileWriter.run(DexFileWriter.java:41)
at com.android.sched.scheduler.ScheduleInstance.runWithLog(ScheduleInstance.java:203)
at com.android.sched.scheduler.MultiWorkersScheduleInstance$SequentialTask.process(MultiWorkersScheduleInstance.java:466)
at com.android.sched.scheduler.MultiWorkersScheduleInstance$Worker.run(MultiWorkersScheduleInstance.java:163)
Caused by: com.android.jack.backend.dex.DexWritingException: Dex writing phase: classes.dex has too many IDs. Try using multi-dex
at com.android.jack.backend.dex.SingleDexWritingTool.write(SingleDexWritingTool.java:59)
at com.android.jack.backend.dex.DexFileWriter.run(DexFileWriter.java:87)
... 4 more
Caused by: com.android.jack.backend.dex.SingleDexOverflowException: classes.dex has too many IDs. Try using multi-dex
... 6 more
Caused by: com.android.jack.tools.merger.MethodIdOverflowException: Method ID overflow when trying to merge dex files
at com.android.jack.tools.merger.ConstantManager.addDexFile(ConstantManager.java:177)
at com.android.jack.tools.merger.JackMerger.addDexFile(JackMerger.java:69)
at com.android.jack.backend.dex.DexWritingTool.mergeDex(DexWritingTool.java:149)
at com.android.jack.backend.dex.SingleDexWritingTool.write(SingleDexWritingTool.java:57)
... 5 more
:app:transformJackWithJackForTabletsDebug FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:transformJackWithJackForTabletsDebug'.
> com.android.build.api.transform.TransformException: com.android.jack.api.v01.CompilationException: Dex writing phase: classes.dex has too many IDs. Try using multi-dex
So I did turn on multidex and it got stuck on Building 96% > :app:transformJackWithJackForTabletsDebug
回答1:
I solved by add a line to app/build.gradle multiDexEnabled = true as below
android{
...
compileSdkVersion rootProject.compileVersion
buildToolsVersion rootProject.buildToolsVersion
defaultConfig {
multiDexEnabled true
}
...
}
and in the project build.gradle
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.2'
}
}
allprojects {
repositories {
jcenter()
}
}
ext {
buildToolsVersion = "24.0.3"
supportLibVersion = "24.2.1"
}
回答2:
The solution was to increase the heap size to 6gb instead of 4gb. The project that I'm building is pretty big and the build time took 30min to finish.
You can increase the heap size in gradle.properties
org.gradle.jvmargs=-Xms256m -Xmx6144m
or
dexOptions {
javaMaxHeapSize "6g"
}
You can also check out my bug report to google regarding this issue here.
来源：https://stackoverflow.com/questions/39457116/gradle-build-hanging-when-jackoptions-is-enabled-for-java-1-8