问题截图如下：
提示找不到gradle：3.0.1
在顶层build.gradle 中，可以看到build.gradle的配置：
buildscript {repositories {jcenter()}dependencies {classpath 'com.android.tools.build:gradle:3.0.1'// NOTE: Do not place your application dependencies here; they belong// in the individual module build.gradle files}
}...需要做的修改：添加maven仓库，即在repositories中添加
maven {url 'https://maven.google.com' }修改后
buildscript {repositories {jcenter()maven {url 'https://maven.google.com'}}dependencies {classpath 'com.android.tools.build:gradle:3.0.1'// NOTE: Do not place your application dependencies here; they belong// in the individual module build.gradle files}
}