gradle build fails for unknown host exception

Question

I just installed a new version of Android Studio and am trying to create a project using the built in templates.

My environment is: Windows 7, SP1, 64 bit In a secure domain environment and I am a domain administrator on my machine.

Here is what I am seeing:

C:\Users\stuz\AndroidStudioProjects\test>gradlew compileDebug --stacktrace
Downloading file://C:/Users/stuz/.gradle/wrapper/dists/gradle-1.10-all.zip
Exception in thread "main" java.lang.RuntimeException: java.net.UnknownHostExcep
tion: C
        at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAcc
essManager.java:78)
        at org.gradle.wrapper.Install.createDist(Install.java:47)
        at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)
        at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)
Caused by: java.net.UnknownHostException: C
        at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
        at java.net.PlainSocketImpl.connect(Unknown Source)
        at java.net.Socket.connect(Unknown Source)
        at java.net.Socket.connect(Unknown Source)
        at sun.net.ftp.impl.FtpClient.doConnect(Unknown Source)
        at sun.net.ftp.impl.FtpClient.tryConnect(Unknown Source)
        at sun.net.ftp.impl.FtpClient.connect(Unknown Source)
        at sun.net.ftp.impl.FtpClient.connect(Unknown Source)
        at sun.net.www.protocol.ftp.FtpURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.ftp.FtpURLConnection.getInputStream(Unknown Sour
ce)
        at org.gradle.wrapper.Download.downloadInternal(Download.java:59)
        at org.gradle.wrapper.Download.download(Download.java:45)
        at org.gradle.wrapper.Install$1.call(Install.java:60)
        at org.gradle.wrapper.Install$1.call(Install.java:47)
        at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAcc
essManager.java:65)

Answer 1

The problem is in your gradle/wrapper/gradle_wrapper.properties file. I'm not sure how it happened, but you have an improper URL in there for the downloadable distribution of Gradle. Change that line from this:

distributionUrl=file://C:/Users/stuz/.gradle/wrapper/dists/gradle-1.10-all.zip

to this:

distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-all.zip