在没有Android Studio-2的情况下生成apk

@代码学徒这个链接是原始问题

我尝试了

gradlew任务

，这就是错误所在

Downloading https://services.gradle.org/distributions/gradle-2.8-all.zip

Exception in thread "main" java.net.ConnectException: Connection timed out: connect
        at java.net.DualStackPlainSocketImpl.connect0(Native Method)
        at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:668)
        at sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:173)
        at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
        at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:275)
        at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:371)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1104)
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:998)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1512)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1440)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
        at org.gradle.wrapper.Download.downloadInternal(Download.java:58)
        at org.gradle.wrapper.Download.download(Download.java:44)
        at org.gradle.wrapper.Install$1.call(Install.java:61)
        at org.gradle.wrapper.Install$1.call(Install.java:48)
        at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65)
        at org.gradle.wrapper.Install.createDist(Install.java:48)
        at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:128)
        at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'BuilderToDo'.
> Could not resolve all dependencies for configuration ':classpath'.
   > Could not resolve com.android.tools.build:gradle:1.5.0.
     Required by:
         :BuilderToDo:unspecified
      > Could not resolve com.android.tools.build:gradle:1.5.0.
         > Could not get resource 'https://jcenter.bintray.com/com/android/tools/build/gradle/1.5.0/gradle-1.5.0.pom'.
            > Could not GET 'https://jcenter.bintray.com/com/android/tools/build/gradle/1.5.0/gradle-1.5.0.pom'.
               > Connection to https://jcenter.bintray.com refused

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 49.262 secs

---

我做错了什么？

请检查internet连接问题我的连接是通过代理的，这是问题所在？也许我不确定我从未尝试过代理我尝试使用--offline命令行，但我得到了以下错误：没有com.android.tools的缓存版本。build:gradle:1.5.0可用于脱机模式，知道我能做什么吗？