在工程的根目录下新建一个 config.gradle文件

ext {
    android = [
            compileSdkVersion: 28,
            buildToolsVersion: '28.0.2',
            minSdkVersion    : 19,
            targetSdkVersion : 28,
            applicationId    : "xxx.xxx.xxx",
            versionCode      : 1,
            versionName      : "1.0.0",
    ]

    //version 版本控制
    versions = [

    ]

    //androidx支持库配置
    androidx = [
            "androidx-appcompat"          : "androidx.appcompat:appcompat:1.0.2",
            "androidx.lifecycle"          : "androidx.lifecycle:lifecycle-extensions:2.1.0",
            "androidx.recyclerview"       : "androidx.recyclerview:recyclerview:1.1.0",
            "androidx.constraintlayout"   : "androidx.constraintlayout:constraintlayout:1.1.3",
            "androidx.cardview"           : "androidx.cardview:cardview:1.0.0",
            "android.material"            : "com.google.android.material:material:1.0.0",
            "androidx.navigation-fragment": "androidx.navigation:navigation-fragment:2.1.0",
            "androidx.navigation-ui:"     : "androidx.navigation:navigation-ui:2.1.0",
    ]

    //依赖第三方配置
    dependencies = [
            "butterknife"                  : "com.jakewharton:butterknife:7.0.1",//
            "gson"                         : "com.google.code.gson:gson:2.8.5",//json解析
            "rxjava"                       : "io.reactivex.rxjava2:rxjava:2.1.3",
            "rxandroid"                    : "io.reactivex.rxjava2:rxandroid:2.0.1",

            /******************************网络配置  --S*****************************************/
            "converter-gson"               : "com.squareup.retrofit2:converter-gson:2.1.0",
            "converter-scalars"            : "com.squareup.retrofit2:converter-scalars:2.0.0",
            "retrofit"                     : "com.squareup.retrofit2:retrofit:2.2.0",
            "adapter-rxjava2"              : "com.squareup.retrofit2:adapter-rxjava2:2.2.0",
            "logging-interceptor"          : "com.squareup.okhttp3:logging-interceptor:3.5.0",
            /******************************网络配置  --E*****************************************/

            "rxpermissions"                : "com.tbruyelle.rxpermissions2:rxpermissions:0.9.3@aar",//权限申请
            "glide"                        : "com.github.bumptech.glide:glide:3.7.0",//google图片加载器
            "BaseRecyclerViewAdapterHelper": "com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.30",//万能适配器
            "eventbus"                     : "org.greenrobot:eventbus:3.1.1",//事件总线
            "wechat"                       : "com.tencent.mm.opensdk:wechat-sdk-android-with-mta:1.1.6",//微信支付
            "PinnedSectionItemDecoration"  : "com.oushangfeng:PinnedSectionItemDecoration:1.3.2",//
            "greendao"                     : "org.greenrobot:greendao:3.2.0",//数据库
            "roundedimageview"             : "com.makeramen:roundedimageview:2.1.1",//圆角图片
            "circleimageview"              : "de.hdodenhof:circleimageview:2.0.0",//圆形图片
            "numberprogressbar"            : "com.daimajia.numberprogressbar:library:1.4@aar",//进度条
            "zxing"                        : "cn.bingoogolapple:bga-qrcode-zxing:1.3.6",//二维码
            "PersistentCookieJar"          : "com.github.franmontiel:PersistentCookieJar:v1.0.1",//网络请求cookie管理
            "link_builder"                 : "com.klinkerapps:link_builder:2.0.4",//
            "jpush"                        : "cn.jiguang.sdk:jpush:3.3.4",//极光推送
            "jcore"                        : "cn.jiguang.sdk:jcore:2.1.2",//极光推送
            "aliyun-oss"                   : "com.aliyun.dpa:oss-android-sdk:+",//阿里云图片上传
            "Luban"                        : "top.zibin:Luban:1.1.8",//图片压缩
            "jwtdecode"                    : "com.auth0.android:jwtdecode:1.1.1",//jwt token解析

    ]

}

在android studio的Project根目录下的build.gradle文件中引入我们创建的配置文件

    apply from:'config.gradle'//引入我们创建的配置文件
    buildscript {
        repositories {
            jcenter()
          }
        ......
     }

    allprojects {
        repositories {
            jcenter()
        }
    }

在app的build.gradle中添加依赖

android {
    ......
    //省略...
    ......
}

dependencies {
    ......
    implementation rootProject.ext.androidx["legacy-support-v4"]
    implementation rootProject.ext.androidx["androidx-appcompat"]
    implementation rootProject.ext.androidx["androidx.recyclerview"]
    implementation rootProject.ext.androidx["androidx.constraintlayout"]
    implementation rootProject.ext.androidx["androidx.cardview"]
    implementation rootProject.ext.androidx["android.material"]
    ......
}