1、新版开发工具

如若使用的是新版开发工具则在settings.gradle中加入

//        gradlePluginPortal()
//        google()maven { url 'https://maven.aliyun.com/repository/google' }maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }maven { url 'https://maven.aliyun.com/repository/public' }maven { url 'https://maven.aliyun.com/repository/jcenter' }
//        mavenCentral()

一定要把 google()等注释掉如下

//        gradlePluginPortal()
//        google()//   mavenCentral()

2.旧版的话在工程目录的build.gradle添加

//        gradlePluginPortal()
//        google()maven { url 'https://maven.aliyun.com/repository/google' }maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }maven { url 'https://maven.aliyun.com/repository/public' }maven { url 'https://maven.aliyun.com/repository/jcenter' }
//        mavenCentral()

一定要把 google()等注释掉如下

//        gradlePluginPortal()
//        google()//   mavenCentral()

3.最终settings.gradle文件

pluginManagement {repositories {//        gradlePluginPortal()
//        google()maven { url 'https://maven.aliyun.com/repository/google' }maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }maven { url 'https://maven.aliyun.com/repository/public' }maven { url 'https://maven.aliyun.com/repository/jcenter' }
//        mavenCentral()maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' }maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter' }maven { url 'https://maven.aliyun.com/nexus/content/repositories/google' }maven { url 'https://maven.aliyun.com/nexus/content/repositories/gradle-plugin' }maven { url 'https://jitpack.io' }maven { url 'https://maven.aliyun.com/repository/google' }maven { url 'https://maven.google.com' }maven {url "https://repo.eclipse.org/content/repositories/paho-snapshots/"}maven {url 'https://mvn.cloud.alipay.com/nexus/content/repositories/open/'}maven { url 'https://repo.spring.io/milestone' }}
}dependencyResolutionManagement {repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)repositories {//        google()maven { url 'https://maven.aliyun.com/repository/google' }maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }maven { url 'https://maven.aliyun.com/repository/public' }maven { url 'https://maven.aliyun.com/repository/jcenter' }
//        mavenCentral()maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' }maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter' }maven { url 'https://maven.aliyun.com/nexus/content/repositories/google' }maven { url 'https://maven.aliyun.com/nexus/content/repositories/gradle-plugin' }maven { url 'https://jitpack.io' }maven { url 'https://maven.aliyun.com/repository/google' }maven { url 'https://maven.google.com' }maven {url "https://repo.eclipse.org/content/repositories/paho-snapshots/"}maven {url 'https://mvn.cloud.alipay.com/nexus/content/repositories/open/'}maven { url 'https://repo.spring.io/milestone' }}
}
rootProject.name = "robotApp"
include ':app'
include ':mscV5PlusDemo'

4.原因分析

   由于

//        gradlePluginPortal()
//        google()

//  mavenCentral()

等的干扰会导致优先加载google的库，故需要注释掉，替换成阿里云的库。