解决：Android Studio下载gradle速度慢的问题_android studio gradle下载慢

配置对所有项目起效的项目环境

查看.gradle所在位置 ：打开Android Studio -> File -> setting 

文件夹中打开Gradle user home显示的路径，在.gradle文件夹中创建init.gradle文件，在init.gradle文件中输入以下配置内容

allprojects{
    repositories {
        def MY_ALIYUN_REPOSITORY_URL = 'http://maven.aliyun.com/nexus/content/groups/public'
        def MY_ALIYUN_JCENTER_URL = 'http://maven.aliyun.com/nexus/content/repositories/jcenter'
        all { ArtifactRepository repo ->
            if(repo instanceof MavenArtifactRepository){
                def url = repo.url.toString()
                if (url.startsWith('https://repo1.maven.org/maven2')) {
                    project.logger.lifecycle "Repository ${repo.url} replaced by $MY_ALIYUN_REPOSITORY_URL."
                    remove repo
                }
                if (url.startsWith('https://jcenter.bintray.com/')) {
                    project.logger.lifecycle "Repository ${repo.url} replaced by $MY_ALIYUN_JCENTER_URL."
                    remove repo
                }
            }
        }
        maven {
            url MY_ALIYUN_REPOSITORY_URL
            url MY_ALIYUN_JCENTER_URL
        }
    }
}

重启Android Studio即可