Android 模块构建错误不能下载依赖包

在模块的build.gradle里面添加了

implementation 'com.android.support:design:26.1.0' 

构建的时候一直报这个错

Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.android.support:design:26.1.0.
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解决办法：

查看 Gradle Scripts 下面的 gradle.properties文件里面是不是默认设置了代理 注释掉就ok了  android Studio的更新不在依靠代理了  

## 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
#Tue Jul 17 14:19:04 CST 2018
#systemProp.https.proxyPort=80
#systemProp.http.proxyHost=mirrors.neusoft.edu.cn
#systemProp.https.proxyHost=mirrors.neusoft.edu.cn
#systemProp.http.proxyPort=80

注释后，重新构建，一切ok