我直接放出我github主要代碼鏈接吧 下面的廢話是給我自己看的 簡單紀錄下
整個項目代碼
config.gradle全部代碼
build.gradle全部代碼

1.創(chuàng)建config.gradle 詳情見github

[]就是一個map集合

//
ext {
    //生產(chǎn) /開發(fā)  環(huán)境
    isRelease = true
    androidId = [
            compileSdkVersion: 29,
            buildToolsVersion: "29.0.3",
            applicationId    : "com.cw.myapplication",
            minSdkVersion    : 19,
            targetSdkVersion : 29,
            versionCode      : 1,
            versionName      : "1.0"

    ]

    appId = [
            applicationId: "com.cw.myapplication",
    ]

    //生產(chǎn) 測試環(huán)境
    url = [
            debug  : "http://101.2.2.2:debug",
            release: "http://101.2.2.20:release",
    ]

    appcompatLibVersion = "1.1.0"
    coreKtxLibVersion = "1.2.0"
    constraintlayoutLibVersion = "1.1.3"
    junitLibVersion = "4.12"
    extJunitLibVersion = "1.1.1"
    espressoCoreLibVersion = "3.2.0"


    dependenciesLib = [
            "appcompat"       : "androidx.appcompat:appcompat:${appcompatLibVersion}",
            "coreKtx"         : "androidx.core:core-ktx:${coreKtxLibVersion}",
            "constraintlayout": "androidx.constraintlayout:constraintlayout:${constraintlayoutLibVersion}",
            "junit"           : "junit:junit:${junitLibVersion}",
            "extJunit"        : "androidx.test.ext:junit:${extJunitLibVersion}",
            "espressoCore"    : "androidx.test.espresso:espresso-core:${espressoCoreLibVersion}"
    ]

}

2.在根目錄下的build.gradle中依賴config.gradle 詳情點擊github

apply from: "config.gradle"
buildscript {
    ext.kotlin_version = '1.3.50'
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.3'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

3.賦值引用 詳情點擊github

//賦值引用
def androidId = rootProject.ext.androidId
def appId = rootProject.ext.appId
def dependenciesLib = rootProject.ext.dependenciesLib
def url = rootProject.ext.url

具體怎么使用config.gradle里的參數(shù) 可以去github下載源碼 看看

下面的代碼簡單說一下 我們可以通過如下代碼片段 依賴指定的庫

implementation dependenciesLib.appcompat

也可以通過最簡潔的方式 遍歷dependenciesLib集合 前面說過這個在config.gradle中定義的就是個集合 既然是集合 我們肯定可以去循環(huán)遍歷他 如:

 //最簡潔的方式  只需要如下代碼 就依賴了全部的三方庫
    dependenciesLib.each { k, v -> implementation v }

以下是全部代碼

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    testImplementation dependenciesLib.junit
    androidTestImplementation dependenciesLib.extJunit
    androidTestImplementation dependenciesLib.espressoCore

    /*implementation dependenciesLib.appcompat
    implementation dependenciesLib.coreKtx
    implementation dependenciesLib.constraintlayout*/

    //最簡潔的方式
    dependenciesLib.each { k, v -> implementation v }

    implementation project(":library")
}