【Android TimeCat】 解决Gradle :Resolve dependencies :classpath的办法

Android Gradle
  1. 1. 背景
  2. 2. 解决
  3. 3. 参考

背景

想学习一下别人的成型项目FastHub，结果build失败，gradle信息如下：

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Executing tasks: [assemble]

Configuration on demand is an incubating feature.

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'FastHub'.
> Could not resolve all files for configuration ':classpath'.
   > Could not resolve com.android.tools.build:gradle:3.2.0-alpha04.
     Required by:
         project :
      > Could not resolve com.android.tools.build:gradle:3.2.0-alpha04.
         > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.2.0-alpha04/gradle-3.2.0-alpha04.pom'.
            > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.2.0-alpha04/gradle-3.2.0-alpha04.pom'.
               > Connect to dl.google.com:443 [dl.google.com/2404:6800:4008:c01:0:0:0:88] failed: Connection timed out: connect
   > Could not resolve com.android.tools.build:gradle:3.2.0-alpha04.
     Required by:
         project : > com.apollographql.apollo:gradle-plugin:0.4.1
      > Could not resolve com.android.tools.build:gradle:3.2.0-alpha04.
         > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.2.0-alpha04/gradle-3.2.0-alpha04.pom'.
            > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.2.0-alpha04/gradle-3.2.0-alpha04.pom'.
               > Connect to dl.google.com:443 [dl.google.com/2404:6800:4008:c01:0:0:0:88] failed: Connection timed out: connect

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

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

BUILD FAILED in 3m 18s

首先在设置>proxy里使用系统默认代理，check connection 使用'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.2.0-alpha04/gradle-3.2.0-alpha04.pom'完美通过，心想应该不是proxy的问题。可就是build失败，提示要么Connection timed out，要么unknown host: dl.google.com，简直逼疯。最后参考了一下，死马当活马医，在参考的文章里找到了解决方案。（我参考的不只下面的3个参考页面，开了一大堆csdn、StackOverflow、github issue的相关网页，都没解决，这3个是我解决时的参考，所以放这里了）

解决

在项目目录下新建文件gradle.properties:

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## Project-wide Gradle settings.
#
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
#
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
# Default value: -Xmx1024m -XX:MaxPermSize=256m
# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
#
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
#Fri Mar 09 22:26:51 CST 2018
systemProp.https.proxyPort=1080
systemProp.http.proxyHost=127.0.0.1
systemProp.https.proxyHost=127.0.0.1
systemProp.http.proxyPort=1080

内容意思是使用本地127.0.0.1:8000端口进行代理。

注意：

  • gradle.properties与app文件夹同级，而不是在app文件夹内。
  • 记得把shadowsocks挂到1080端口，之前的check connection没卵用。

参考

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