Gradle插件开发：基础篇

运行环境

• Android Studio 3.0.1
• classpath ‘com.android.tools.build:gradle:3.0.1’

准备开始

1. 通过New Module，新建一个Java Library或者Android Library项目，名称为plugin
2. 重命名java目录为groovy目录
3. 新建resources(与groovy同级)/META-INF/gradle-plugins/com.test.properties
4. 编辑properties内容为implementation-class=com.xxx.plugin.TestPlugin

   具体实现

   配置plugin项目的build.gradle

   apply plugin: 'java'
   apply plugin: 'maven'
   apply plugin: 'groovy'
   
   compileGroovy {
       sourceCompatibility = 1.7
       targetCompatibility = 1.7
       options.encoding = "UTF-8"
   }
   
   repositories {
       google()
       jcenter()
       mavenCentral()
   }
   
   dependencies {
       compile gradleApi()
       compile localGroovy()
       compile 'com.android.tools.build:gradle:3.0.1'
   }
   //发布到本地maven仓库
   group = 'com.xxx.plugin'
   version = '1.0.1'
   
   uploadArchives {
       version = version + '-SNAPSHOT'
       repositories {
           mavenDeployer {
               snapshotRepository(url: uri('../repo'))
           }
       }
   }

新建TestPlugin实现Plugin接口

class TestPlugin implements Plugin<Project>{

    @Override
    void apply(Project project) {
        project.task('helloPluginTask') {
            group 'junli'
            doLast {
                println 'hell i am a task in plugin'
            }
        }
    }
}

上传到本地Maven库

执行uploadArchives把plugin上传到本地maven仓库

使用Gradle Plugin

项目根build.gradle配置如下

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    
    repositories {
        google()
        jcenter()
        //添加maven引用
        maven {
            url uri('./repo')
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
        //添加plugin引用
        classpath 'com.xxx.plugin:plugin:1.0.1-SNAPSHOT'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

应用build.gradle 配置如下

apply plugin: 'com.test'

执行插件

./gradlew helloPluginTask