上一篇部落格已經介紹瞭如何實現簡單的自定義gradle外掛，今天介紹如何自定義Task。

一、自定義Task

         1、直接沿用上一篇的程式碼，copy一份改名CustomPluginTask

         在plugin\src\main\groovy\com\micky\gradle目錄建立原始檔 MyCustomTask.groovy

package com.micky.gradle;

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.TaskAction

class MyCustomTask extends DefaultTask {
	@TaskAction
	void output() {
		println "Hello this is my custom task output"
	}
}
 

         2、修改MyCustomPlugin.groovy

package com.micky.gradle;

import org.gradle.api.*;

class MyCustomPlugin implements Plugin<Project> {
	void apply(Project project) {
		project.task('customTask', type: MyCustomTask)
	}
}

         3、修改plugin目錄下的build.gradle，修改版本號

apply plugin: 'groovy'
apply plugin: 'maven'

dependencies {
	compile gradleApi()
	compile localGroovy()
}

repositories {
	mavenCentral()
}

group='com.micky'
version='1.0.1'

uploadArchives {
	repositories {
		mavenDeployer {
			repository(url: uri('../repo'))
		}
	}
}
 

         執行gradle uploadArchives 編譯外掛包
         

         4、sample目錄下的build.gradle

buildscript {
	repositories {
		maven {
			url uri('../repo')
		}
	}

	dependencies {
		classpath group: 'com.micky',
			name: 'gradle-micky',
			version: '1.0.1'
	}
}

apply plugin: 'com.micky.mycustom'

         執行gradle customTask 結果如下：

        

         原始碼地址：https://github.com/mickyliu945/GradleCustomPlugin

二、向Plugin Task 傳遞引數

        1、 拷貝一份上面的程式碼，改名為CustomPluginTaskWithParam，修改plugin\src\main\groovy\com\micky\gradle\MyCustomPlugin.groovy

package com.micky.gradle;

import org.gradle.api.*;

class MyCustomPluginExtension {
	def message = "From MyCustomPluginExtention"
	def sender = "MyCustomPluin"
}

class MyCustomPlugin implements Plugin<Project> {
	void apply(Project project) {
		project.extensions.create('myArgs', MyCustomPluginExtension)
		project.task('customTask', type: MyCustomTask)
	}
}

        2、修改plugin\src\main\groovy\com\micky\gradle\MyCustomTask.groovy

package com.micky.gradle;

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.TaskAction

class MyCustomTask extends DefaultTask {
	@TaskAction
	void output() {
		println "Sender is ${project.myArgs.sender},\nmessage: ${project.myArgs.message}"
	}
}

        

        3、修改plugin/build.gradle

apply plugin: 'groovy'
apply plugin: 'maven'

dependencies {
	compile gradleApi()
	compile localGroovy()
}

repositories {
	mavenCentral()
}

group='com.micky'
version='1.0.2'

uploadArchives {
	repositories {
		mavenDeployer {
			repository(url: uri('../repo'))
		}
	}
}

        執行gradle uploadArchives 編譯外掛包

        4、修改sample/build.gradle

buildscript {
	repositories {
		maven {
			url uri('../repo')
		}
	}

	dependencies {
		classpath group: 'com.micky',
			name: 'gradle-micky',
			version: '1.0.2'
	}
}

apply plugin: 'com.micky.mycustom'

        5、執行gradle customTask，結果如下：
        

        6、在gradle檔案配置引數

buildscript {
	repositories {
		maven {
			url uri('../repo')
		}
	}

	dependencies {
		classpath group: 'com.micky',
			name: 'gradle-micky',
			version: '1.0.2'
	}
}

apply plugin: 'com.micky.mycustom'

myArgs {
	sender='Micky Liu'
	message='Gradle is so simple.'
}

        7、 執行gradle customTask，結果如下：
        

        原始碼地址：https://github.com/mickyliu945/GradleCustomPlugin

三、向Plugin Task 傳遞巢狀試複雜引數

        1、 拷貝一份上面的程式碼，改名為CustomPluginTaskWithNestParam，修改plugin\src\main\groovy\com\micky\gradle\MyCustomPlugin.groovy

package com.micky.gradle;

import org.gradle.api.*;

class MyNestPluginExtension {
	def receiver = "Kate Zhou"
	def email = "[email protected]"
}

class MyCustomPluginExtension {
	def message = "From MyCustomPluginExtention"
	def sender = "MyCustomPluin"
}

class MyCustomPlugin implements Plugin<Project> {
	void apply(Project project) {
		project.extensions.create('myArgs', MyCustomPluginExtension)
		project.myArgs.extensions.create('nestArgs', MyNestPluginExtension)
		project.task('customTask', type: MyCustomTask)
	}
}

         2、修改MyCustomPlugin.groovy

package com.micky.gradle;

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.TaskAction

class MyCustomTask extends DefaultTask {
	@TaskAction
	void output() {
		println "Sender is ${project.myArgs.sender} \nmessage: ${project.myArgs.message}"
		println "Receiver is ${project.myArgs.nestArgs.receiver} \nemail: ${project.myArgs.nestArgs.email}"
	}
}

         3、修改plugin/build.gradle

apply plugin: 'groovy'
apply plugin: 'maven'

dependencies {
	compile gradleApi()
	compile localGroovy()
}

repositories {
	mavenCentral()
}

group='com.micky'
version='1.0.3'

uploadArchives {
	repositories {
		mavenDeployer {
			repository(url: uri('../repo'))
		}
	}
}

         4、執行gradle uploadArchives 編譯外掛包

         5、修改sample/build.gradle

buildscript {
	repositories {
		maven {
			url uri('../repo')
		}
	}

	dependencies {
		classpath group: 'com.micky',
			name: 'gradle-micky',
			version: '1.0.3'
	}
}

apply plugin: 'com.micky.mycustom'

myArgs {
	sender='Micky Liu'
	message='Gradle is so simple.'
}

           
         6、執行執行gradle customTask，結果如下：

          

         7、在gradle檔案配置引數

buildscript {
	repositories {
		maven {
			url uri('../repo')
		}
	}

	dependencies {
		classpath group: 'com.micky',
			name: 'gradle-micky',
			version: '1.0.3'
	}
}

apply plugin: 'com.micky.mycustom'

myArgs {
	sender='Micky Liu'
	message='Gradle is so simple.'
	nestArgs {
		receiver='David Chen'
		email='[email protected]'
	}

}

         8、執行gradle customTask，結果如下：
         

原始碼地址：https://github.com/mickyliu945/GradleCustomPlugin