# 说明
`Gradle`源在国外,国内构建项目的时候经常报错连接超时,修改国内镜像可以解决。
### 方法
配置方式有仅对单个项目生效和对所有项目生效两种方式
#### 对单个项目生效
1.打开`Android Studio`工程文件,找到`build.gradle`
2.使用文本编辑器打开,默认格式如下:
```json
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.5.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
```
3.修改为以下内容:
```json
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
maven {
url 'https://maven.aliyun.com/repository/google'
}
maven {
url 'https://maven.aliyun.com/repository/public'
}
maven {
url 'https://maven.aliyun.com/repository/jcenter'
}
}
dependencies {
classpath 'com.android.tools.build:gradle:3.5.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
maven {
url 'https://maven.aliyun.com/repository/google'
}
maven {
url 'https://maven.aliyun.com/repository/public'
}
maven {
url 'https://maven.aliyun.com/repository/jcenter'
}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
```
#### 对所有项目生效
1.打开系统用户的Gradle配置目录:`C:\Users\xxx\.gradle`
2.新建文件`init.gradle`(注意文件后缀名为`gradle`)
```json
allprojects{
repositories {
def ALIYUN_REPOSITORY_URL = 'https://maven.aliyun.com/repository/public'
def ALIYUN_JCENTER_URL = 'https://maven.aliyun.com/repository/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 $ALIYUN_REPOSITORY_URL."
remove repo
}
if (url.startsWith('https://jcenter.bintray.com/')) {
project.logger.lifecycle "Repository ${repo.url} replaced by $ALIYUN_JCENTER_URL."
remove repo
}
}
}
maven {
url ALIYUN_REPOSITORY_URL
url ALIYUN_JCENTER_URL
}
}
}
```