我有以下结构：

./mainproject/
    -settings.gradle
    -build.gradle
    -subproject/
        -build.gradle
        -/src/...
./libraryproject
    -settings.gradle
    -build.gradle
    -subproject_interfaces/
        -build.gradle
        -src/...
    -subproject_impl/
        -build.gradle
        -src/...

图书馆项目/设置。gral de：

rootProject.name = 'library'
include 'subproject_interfaces','subproject_impl'

图书馆项目/build. g radle

dependencies {
    compile project(':subproject_interfaces')
    compile project(':subprojects_impl')
}

主项目/settings. g radle

include "library"
project(':library').projectDir = new File(settingsDir,"../libraryproject")

主项目/子项目/build. g radle

dependencies{
    compile project(':library')
}

• 我可以很好地构建图书馆项目。
• 我可以通过对main project的项目依赖来gradle构建库项目。
• 我无法构建main project，原因是：带有路径的项目：在项目“库”中找不到“subproject_interfaces”