gradle 基础应用：统一配置信息

1.我们可以在主项目的根目录下创建一个文件 config.gradle

2.编写config.gradle中代码配置信息如下：

ext{    android=[            applicationId: "com.example.psw.kcode",            compileSdkVersion: 25,            buildToolsVersion: "26.0.0",            minSdkVersion    : 15,            targetSdkVersion : 25,            versionCode: 1,            versionName: "1.0"    ]    //Version    supportLibrary = "25.3.1"    //supportLibraries dependencies    supportDependencies = [            supportV7: "com.android.support:appcompat-v7:${supportLibrary}",            supportV4       : "com.android.support:support-v4:${supportLibrary}",            suppoutDesign   : "com.android.support:design:${supportLibrary}",            constraint: "com.android.support.constraint:constraint-layout:1.0.2",            Rxjava:"io.reactivex.rxjava2:rxjava:2.1.3"    ]//    CompileInfo[////    ]}

3.找到根目录的build.gradle文件 ，进行引入config.gradle文件，build.gradle文件顶部编写引入代码：apply from: “config.gradle”

代码示例：

apply from:"config.gradle"buildscript {    repositories {        jcenter()    }    dependencies {        classpath 'com.android.tools.build:gradle:2.3.3'        // NOTE: Do not place your application dependencies here; they belong        // in the individual module build.gradle files    }}allprojects {    repositories {        jcenter()    }}task clean(type: Delete) {    delete rootProject.buildDir}

4.module的build.gradle 中使用配置信息

apply plugin: 'com.android.application'//android配置信息def config = rootProject.ext.android//依赖库def librarys = rootProject.ext.supportDependenciesandroid {    compileSdkVersion config.compileSdkVersion    buildToolsVersion config.buildToolsVersion    defaultConfig {        applicationId config.applicationId        minSdkVersion config.minSdkVersion        targetSdkVersion config.targetSdkVersion        versionCode config.versionCode        versionName config.versionName        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }}dependencies {    compile fileTree(dir: 'libs', include: ['*.jar'])    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {        exclude group: 'com.android.support', module: 'support-annotations'    })    compile librarys.supportV7    compile librarys.supportV4    compile librarys.suppoutDesign    compile librarys.constraint    compile librarys.Rxjava    testCompile 'junit:junit:4.12'