Android Studio错误（Connect to 127.0.0.1:1080 [/127.0.0.1] failed: Connection refused: connect） _android

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同步gradle时发生如下错误：

> Could not resolve all dependencies for configuration ‘:classpath‘. > Could not resolve com.github.dcendents:android-maven-gradle-plugin:1.3. Required by: project : > Could not resolve com.github.dcendents:android-maven-gradle-plugin:1.3. > Could not get resource ‘https://jcenter.bintray.com/com/github/dcendents/android-maven-gradle-plugin/1.3/android-maven-gradle-plugin-1.3.pom‘. > Could not GET ‘https://jcenter.bintray.com/com/github/dcendents/android-maven-gradle-plugin/1.3/android-maven-gradle-plugin-1.3.pom‘. > Connect to 127.0.0.1:1080 [/127.0.0.1] failed: Connection refused: connect

原因：gradle.properties 文件中使用了代理
有2个地方需要修改（如果2个地方都存在以下内容，视自己情况而定）
看到很多博客说删除掉gradle.properties中的代理

systemProp.https.proxyPort=1080 systemProp.http.proxyHost=127.0.0.1 systemProp.https.proxyHost=127.0.0.1 systemProp.http.proxyPort=1080

我删除工程中gradle.properties里的代理内容，但还是报上面的错误
原因：还需要删除掉C:UsersAdministrator.gradle下的gradle.properties中的代理
【Android Studio错误（Connect to 127.0.0.1:1080 [/127.0.0.1] failed: Connection refused: connect）】