目录

为何要统一管理

我们的APP Module可能依赖的很多的本地Library Module，如果我们需要修改compileSdkVersion等属性的时候，就需要挨个Module去修改，而如果进行统一的版本管理则会方便很多。

配置的统一管理

1. 新建common.gradle

ext {
    android = [
            compileSdkVersion: 29,
            defaultConfig    : [
                    applicationId            : "com.itfitness.gradletest",
                    minSdkVersion            : 15,
                    targetSdkVersion         : 29,
                    versionCode              : 1,
                    versionName              : "1.0",
                    testInstrumentationRunner: "androidx.test.runner.AndroidJUnitRunner",
            ]
    ]
}

3. RootProject中应用common.gradle

android {
    compileSdkVersion rootProject.ext.android.compileSdkVersion
    defaultConfig {
        applicationId rootProject.ext.android.defaultConfig.applicationId
        minSdkVersion rootProject.ext.android.defaultConfig.minSdkVersion
        targetSdkVersion rootProject.ext.android.defaultConfig.targetSdkVersion
        versionCode rootProject.ext.android.defaultConfig.versionCode
        versionName rootProject.ext.android.defaultConfig.versionName
        testInstrumentationRunner rootProject.ext.android.defaultConfig.testInstrumentationRunner
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

依赖库的统一管理

操作与配置统一管理类似。
1. common.gradle中添加依赖库配置

ext {
    android = [
            compileSdkVersion: 29,
            defaultConfig    : [
                    applicationId            : "com.itfitness.gradletest",
                    minSdkVersion            : 15,
                    targetSdkVersion         : 29,
                    versionCode              : 1,
                    versionName              : "1.0",
                    testInstrumentationRunner: "androidx.test.runner.AndroidJUnitRunner",
            ]
    ]
    //依赖库配置
    dependencies = [
            app: [
                    implementation: [
                            'androidx.appcompat:appcompat:1.1.0',//库
                            'androidx.constraintlayout:constraintlayout:1.1.3'
                    ],
                    androidTestImplementation:[
                            'androidx.test:runner:1.2.0',
                            'androidx.test.espresso:espresso-core:3.2.0'
                    ],
                    testImplementation:[
                            'junit:junit:4.12'
                    ]
            ]
    ]
}

2. 在Module中引入依赖库
为了方便，这里我使用循环遍历引入

apply plugin: 'com.android.application'
android {
    compileSdkVersion rootProject.ext.android.compileSdkVersion
    defaultConfig {
        applicationId rootProject.ext.android.defaultConfig.applicationId
        minSdkVersion rootProject.ext.android.defaultConfig.minSdkVersion
        targetSdkVersion rootProject.ext.android.defaultConfig.targetSdkVersion
        versionCode rootProject.ext.android.defaultConfig.versionCode
        versionName rootProject.ext.android.defaultConfig.versionName
        testInstrumentationRunner rootProject.ext.android.defaultConfig.testInstrumentationRunner
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}
//依赖引入
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    //通过循环common.gradle中对应的扩展属性来进行依赖引入
    rootProject.ext.dependencies.app.implementation.each{
        implementation it
    }
    rootProject.ext.dependencies.app.androidTestImplementation.each{
        androidTestImplementation it
    }
    rootProject.ext.dependencies.app.testImplementation.each{
        testImplementation it
    }
    //这下面的代码是为了引入本地所有的Library Module
    getParent().getSubprojects().each{Project p->
        if(p.name != "app"){
            implementation project(path: ":${p.name}")
        }
    }
}