Gradle依赖的统一管理

在项目开发中我们会经常引入多个Module,然而每个Module中又包含了V4、V7，为了升级新版本依赖包只用更改一次，我们决定采用Gradle依赖的统一管理，避免重复繁琐的劳动。

在Project目录下新建config.gradle文件（文件名字可以自定义）

ext {    android = [            compileSdkVersion: 26,            buildToolsVersion: "26.0.2",            applicationId    : "com.wj.baseutils",            minSdkVersion    : 15,            targetSdkVersion : 26,            versionCode      : 1,            versionName      : "1.0.0"    ]    def dependVersion = [            support    : "26.1.0",            butterknife: "8.8.1",            glide      : "4.5.0",    ]    dependencies = [            //base            "support-v4"          : "com.android.support:support-v4:${dependVersion.support}",            "appcompat-v7"        : "com.android.support:appcompat-v7:${dependVersion.support}",            "annotations"         : "com.android.support:support-annotations:${dependVersion.support}",            "constraint-layout"   : "com.android.support.constraint:constraint-layout:1.0.2",            //test            "junit"               : "junit:junit:4.12",            "runner"              : "com.android.support.test:runner:1.0.1",            "espresso-core"       : "com.android.support.test.espresso:espresso-core:3.0.1",            //eventbus            "eventbus"            : "org.greenrobot:eventbus:3.1.1",            //butterknife            "butterknife"         : "com.jakewharton:butterknife:${dependVersion.butterknife}",            "butterknife-compiler": "com.jakewharton:butterknife-compiler:${dependVersion.butterknife}",            //Glide            "glide"               : "com.github.bumptech.glide:glide:${dependVersion.glide}",            "glide-compiler"      : "com.github.bumptech.glide:compiler:${dependVersion.glide}"    ]}

然后在Project的build.gradle中添加

apply from: "config.gradle"

在modle或者app中添加引用

apply plugin: 'com.android.library'android {    compileSdkVersion rootProject.ext.android.compileSdkVersion    defaultConfig {        minSdkVersion rootProject.ext.android.minSdkVersion        targetSdkVersion rootProject.ext.android.targetSdkVersion        versionCode rootProject.ext.android.versionCode        versionName rootProject.ext.android.versionName        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }}dependencies {    implementation fileTree(dir: 'libs', include: ['*.jar'])    implementation rootProject.ext.dependencies["constraint-layout"]    //test    testImplementation rootProject.ext.dependencies["junit"]    androidTestImplementation rootProject.ext.dependencies["runner"]    androidTestImplementation rootProject.ext.dependencies["espresso-core"]    //support    api(rootProject.ext.dependencies["support-v4"]) {        exclude module: 'support-annotations'    }    api(rootProject.ext.dependencies["appcompat-v7"]) {        exclude module: 'support-v4'    }    api rootProject.ext.dependencies["annotations"]    //eventbus    api rootProject.ext.dependencies["eventbus"]    //butterknife    api(rootProject.ext.dependencies["butterknife"]) {        exclude module: 'support-annotations'    }    annotationProcessor rootProject.ext.dependencies["butterknife-compiler"]    //glide    api(rootProject.ext.dependencies["glide"]) {        exclude module: 'support-fragment'    }    annotationProcessor(rootProject.ext.dependencies["glide-compiler"]) {        exclude module: 'jsr305'    }}

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