中国的gradle配置

build.gradle

import groovy.json.JsonSlurper

buildscript {
    ext.kotlin_version = '1.3.72'
    def isChina = false
    try {
        def connection = new URL('https://api.ip.sb/geoip').openConnection()
        connection.setRequestMethod('GET')
        def reader = new BufferedReader(new InputStreamReader(connection.inputStream))
        def text = reader.readLine()

        def slurper = new JsonSlurper()
        def states = slurper.parseText(text)
        def country = states['country']
        isChina = country == 'China'
    } catch (e) {
        println(e)
    }

    ext.isChina = isChina

    repositories {
        if (isChina) {
            maven { url 'https://maven.aliyun.com/repository/google' }
            maven { url 'https://maven.aliyun.com/repository/jcenter' }
            maven {
              url 'https://storage.flutter-io.cn/download.flutter.io'
            }
        } else {
            google()
            jcenter()
        }
    }
    
    dependencies {
        classpath 'com.android.tools.build:gradle:3.6.3'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        if (isChina) {
            maven { url 'https://maven.aliyun.com/repository/google' }
            maven { url 'https://maven.aliyun.com/repository/jcenter' }
            maven {
              url 'https://storage.flutter-io.cn/download.flutter.io'
            }
        } else {
            google()
            jcenter()
        }
    }
}