Android studio 无法为android studio 3.0安装gradle

我已经开始学习kotlin语言并安装了Android Studio canary build 3。因为我的互联网速度很慢，所以我的Gradle构建总是失败。。然后我下载了grade 4.0里程碑文件（从Gradle包装器属性中获取了链接）。尝试用硬盘上的文件位置替换该链接。但显示空点异常。请帮助我。我的互联网速度很慢

从这里下载文件

https\：//services.gradle.org/distributions/gradle-4.0-milestone-1-all.zip

`distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=E:\dwnld\gradle-4.0-milestone-1-all.zip`

这是显示的错误

`

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我修复了它…首先我将gradle zip文件解压缩到一个文件夹（任意）。然后转到设置>构建、执行、部署>gradle，然后选择使用本地gradle分发并选择我提取zip然后应用的文件夹。它下载了许多小文件。现在完成了。

我没有答案，但我有一个建议：删除主目录中的

.gradle

目录。这就是ependency缓存是，因此清除它可能会消除损坏的文件。它正在重新下载该文件。是的，它将下载大量文件。但大多数文件将低于100k。祝你好运！

Error:java.lang.NullPointerException
    at org.gradle.wrapper.PathAssembler.getDistName(PathAssembler.java:84)
    at org.gradle.wrapper.PathAssembler.getDistribution(PathAssembler.java:40)
    at org.jetbrains.plugins.gradle.service.GradleInstallationManager.getWrappedGradleHome(GradleInstallationManager.java:554)
    at org.jetbrains.plugins.gradle.service.GradleInstallationManager.getGradleHome(GradleInstallationManager.java:209)
    at org.jetbrains.plugins.gradle.service.GradleInstallationManager.doGetGradleHome(GradleInstallationManager.java:194)
    at org.jetbrains.plugins.gradle.service.GradleInstallationManager.getGradleHome(GradleInstallationManager.java:127)
    at org.jetbrains.plugins.gradle.GradleManager.lambda$getExecutionSettingsProvider$2(GradleManager.java:141)
    at com.intellij.openapi.externalSystem.util.ExternalSystemApiUtil.getExecutionSettings(ExternalSystemApiUtil.java:718)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.prepare(ExternalSystemFacadeManager.java:219)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.doGetFacade(ExternalSystemFacadeManager.java:164)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.doInvoke(ExternalSystemFacadeManager.java:133)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager$MyHandler.invoke(ExternalSystemFacadeManager.java:270)
    at com.sun.proxy.$Proxy118.getResolver(Unknown Source)
    at com.intellij.openapi.externalSystem.service.internal.ExternalSystemResolveProjectTask.doExecute(ExternalSystemResolveProjectTask.java:58)
    at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:139)
    at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:125)
    at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$3.execute(ExternalSystemUtil.java:388)
    at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$5.run(ExternalSystemUtil.java:445)
    at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:726)
    at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:176)
    at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:556)
    at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:501)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:66)
    at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:163)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl$1.run(ProgressManagerImpl.java:137)
    at com.intellij.openapi.application.impl.ApplicationImpl$2.run(ApplicationImpl.java:334)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    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)
`