choose aliyun or official by geo ip.

Author: CaiJingLong

example/android/build.gradle

@@ -1,10 +1,30 @@
+import groovy.json.JsonSlurper
+
+
 buildscript {
     ext.kotlin_version = '1.3.61'
+
+    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']
+
+    def isChina = country == 'China'
+
+    ext.isChina = isChina
+
     repositories {
-        google()
-        jcenter()
-        maven { url 'https://maven.aliyun.com/repository/google' }
-        maven { url 'https://maven.aliyun.com/repository/jcenter' }
+        if (isChina) {
+            maven { url 'https://maven.aliyun.com/repository/google' }
+            maven { url 'https://maven.aliyun.com/repository/jcenter' }
+        } else {
+            google()
+            jcenter()
+        }
     }
 
     dependencies {
@@ -15,10 +35,13 @@ buildscript {
 
 allprojects {
     repositories {
-        google()
-        jcenter()
-        maven { url 'https://maven.aliyun.com/repository/google' }
-        maven { url 'https://maven.aliyun.com/repository/jcenter' }
+        if (isChina) {
+            maven { url 'https://maven.aliyun.com/repository/google' }
+            maven { url 'https://maven.aliyun.com/repository/jcenter' }
+        } else {
+            google()
+            jcenter()
+        }
     }
 }
 
@@ -43,4 +66,4 @@ subprojects {
             }
         }
     }
-}
+}