android - 无法使用cmd构建android项目

Question

我正在尝试使用命令行构建一个Android项目。我将cd放入项目目录，并尝试.\gradlew assembleDebug和.\gradlew build，但是我不断收到此错误:

Picked up _JAVA_OPTIONS: -Xmx512M
Starting a Gradle Daemon (subsequent builds will be faster)

FAILURE: Build failed with an exception.

* What went wrong:
Unable to start the daemon process.
This problem might be caused by incorrect configuration of the daemon.
For example, an unrecognized jvm option is used.
Please refer to the user guide chapter on the daemon at https://docs.gradle.org/4.5.1/userguide/gradle_daemon.html
Please read the following process output to find out more:
-----------------------
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Java HotSpot(TM) Client VM warning: ignoring option MaxPermSize=512m; support was removed in 8.0
Invalid maximum heap size: -Xmx4g
The specified size exceeds the maximum representable size.


* Try:
Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Exception is:
org.gradle.api.GradleException: Unable to start the daemon process.
This problem might be caused by incorrect configuration of the daemon.
For example, an unrecognized jvm option is used.
Please refer to the user guide chapter on the daemon at https://docs.gradle.org/4.5.1/userguide/gradle_daemon.html
Please read the following process output to find out more:
-----------------------
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Java HotSpot(TM) Client VM warning: ignoring option MaxPermSize=512m; support was removed in 8.0
Invalid maximum heap size: -Xmx4g
The specified size exceeds the maximum representable size.

        at org.gradle.launcher.daemon.bootstrap.DaemonGreeter.parseDaemonOutput(DaemonGreeter.java:34)
        at org.gradle.launcher.daemon.client.DefaultDaemonStarter.startProcess(DefaultDaemonStarter.java:161)
        at org.gradle.launcher.daemon.client.DefaultDaemonStarter.startDaemon(DefaultDaemonStarter.java:137)
        at org.gradle.launcher.daemon.client.DefaultDaemonConnector.doStartDaemon(DefaultDaemonConnector.java:210)
        at org.gradle.launcher.daemon.client.DefaultDaemonConnector.startDaemon(DefaultDaemonConnector.java:204)
        at org.gradle.launcher.daemon.client.DefaultDaemonConnector.connect(DefaultDaemonConnector.java:128)
        at org.gradle.launcher.daemon.client.DaemonClient.execute(DaemonClient.java:138)
        at org.gradle.launcher.daemon.client.DaemonClient.execute(DaemonClient.java:92)
        at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:51)
        at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:173)
        at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:290)
        at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:263)
        at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
        at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
        at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:256)
        at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:190)
        at org.gradle.launcher.Main.doAction(Main.java:36)
        at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:60)
        at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:37)
        at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        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)


* Get more help at https://help.gradle.org

我的Java版本是:

Picked up _JAVA_OPTIONS: -Xmx512M
java version "1.8.0_221"
Java(TM) SE Runtime Environment (build 1.8.0_221-b11)
Java HotSpot(TM) Client VM (build 25.221-b11, mixed mode)

Gradlew版本是:

Picked up _JAVA_OPTIONS: -Xmx512M

------------------------------------------------------------
Gradle 4.5.1
------------------------------------------------------------

Build time:   2018-02-05 13:22:49 UTC
Revision:     37007e1c012001ff09973e0bd095139239ecd3b3

Groovy:       2.4.12
Ant:          Apache Ant(TM) version 1.9.9 compiled on February 2 2017
JVM:          1.8.0_221 (Oracle Corporation 25.221-b11)
OS:           Windows 10 10.0 x86

这个错误是什么意思？我怎样才能解决这个问题？我只想尝试使用命令行运行此项目，而不要使用Android Studio。

Answer 1

这是Java错误。看起来您正在使用的32位VM分配的内存不能超过2GB。

尝试切换到64位JVM。