之前我添加都是如下方式

android{
    repositories {
        flatDir {
            dirs 'libs'
        }
    }
}
dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation (name: 'xxx', ext: 'aar')
}

感觉很不方便 后面发现一个简单的方式

dependencies {
　    将
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     改为
     implementation fileTree(dir: 'libs', include: ['*.jar','*.aar'])
}

特此记录下