优雅的项目配置--常用库和版本管理

主要
(1) 常用库的展示与配置.
(2) 统一管理项目和库的版本.
(3) 设置项目的私有参数.

1. 常用库

apply plugin: 'com.android.application'     // Android应用def cfg = rootProject.ext.configuration // 配置def libs = rootProject.ext.libraries // 库android {    compileSdkVersion cfg.compileVersion    buildToolsVersion cfg.buildToolsVersion    defaultConfig {        applicationId cfg.package        minSdkVersion cfg.minSdk        targetSdkVersion cfg.targetSdk        versionCode cfg.version_code        versionName cfg.version_name        buildConfigField "String", "MARVEL_PUBLIC_KEY", "\"${marvel_public_key}\""        buildConfigField "String", "MARVEL_PRIVATE_KEY", "\"${marvel_private_key}\""    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }    compileOptions {        sourceCompatibility JavaVersion.VERSION_1_8        targetCompatibility JavaVersion.VERSION_1_8    }    // 注释冲突    packagingOptions {        exclude 'META-INF/services/javax.annotation.processing.Processor'    }}dependencies {    compile fileTree(dir: 'libs', include: ['*.jar'])    testCompile 'junit:junit:4.12'    // Android,注意必须为双引号，单引号报错    compile "com.android.support:design:${libs.supportVersion}"    compile "com.android.support:appcompat-v7:${libs.supportVersion}"    compile "com.android.support:cardview-v7:${libs.supportVersion}"    compile "com.android.support:recyclerview-v7:${libs.supportVersion}"    compile "com.android.support:palette-v7:${libs.supportVersion}"    // Retrofit    compile "com.squareup.retrofit:retrofit:${libs.retrofit}"    compile "com.squareup.retrofit:converter-gson:${libs.retrofit}"    compile "com.squareup.retrofit:adapter-rxjava:${libs.retrofit}"    // ReactiveX    compile "io.reactivex:rxjava:${libs.rxandroid}"    compile "io.reactivex:rxandroid:${libs.rxandroid}"    // Dagger    compile "com.google.dagger:dagger:${libs.dagger}"    apt "com.google.dagger:dagger-compiler:${libs.dagger}"    compile "org.glassfish:javax.annotation:${libs.javax_annotation}"    // Others    compile "com.jakewharton:butterknife:${libs.butterknife}" // 资源注入    compile "com.github.bumptech.glide:glide:${libs.glide}" // 图片处理    compile "jp.wasabeef:recyclerview-animators:${libs.recycler_animators}" // Recycler动画    compile "de.hdodenhof:circleimageview:${libs.circleimageview}" // 头像视图}

*项目版本:
def cfg = rootProject.ext.configuration
cfg.compileVersion
库版本:
def libs = rootProject.ext.libraries
${libs.retrofit}*

2. 参数管理

buildConfigField管理私有参数, 配置在gradle.properties里面.

android {    defaultConfig {        buildConfigField "String", "MARVEL_PUBLIC_KEY", "\"${marvel_public_key}\""        buildConfigField "String", "MARVEL_PRIVATE_KEY", "\"${marvel_private_key}\""    }}

设置参数的类型\变量名\位置三个部分.

marvel_public_key   = 74129ef99c9fd5f7692608f17abb88f9marvel_private_key  = 281eb4f077e191f7863a11620fa1865f2940ebeb

**未指定路径, 默认是配置在gradle.properties中.
两个地方可以配置参数, 一个是项目的build.gradle, 一个是gradle.properties.**
项目中使用BuildConfig.xxx引入参数.

 MarvelSigningIterceptor signingIterceptor = new MarvelSigningIterceptor(                BuildConfig.MARVEL_PUBLIC_KEY, BuildConfig.MARVEL_PRIVATE_KEY);

3. 版本管理

版本管理配置在项目的build.gradle中, 包含两个部分, 一个是项目的版本, 一个是库的版本. 把常用参数设置成为变量. 子项目使用rootProject.ext.xxx的形式引入.

ext {    configuration = [            package          : "me.chunyu.spike.springrainnews",            buildToolsVersion: "23.0.1",            compileVersion   : 23,            minSdk           : 14,            targetSdk        : 23,            version_code     : 1,            version_name     : "0.0.1",    ]    libraries = [            supportVersion    : "23.1.1",            retrofit          : "2.0.0-beta2",            rxandroid         : "1.1.0",            dagger            : "2.0",            javax_annotation  : "10.0-b28",            butterknife       : "7.0.1",            glide             : "3.6.1",            recycler_animators: "2.1.0",            circleimageview   : "2.0.0"    ]}buildscript {    repositories {        jcenter()    }    dependencies {        classpath 'com.android.tools.build:gradle:2.0.0-alpha5'        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'        classpath 'me.tatarka:gradle-retrolambda:3.2.4'        classpath 'com.android.databinding:dataBinder:1.0-rc4'    }}allprojects {    repositories {        jcenter()    }}task clean(type: Delete) {    delete rootProject.buildDir}