[游戏开发]android Gradle脚本 task-＞ export Jar

背景

我们有个SDK module，常常有导出Jar包的需要
主要有以下需求

1. 通过 createFullJarRelease 指令导出jar包，jar位置位于build/intermediates/full_jar/realse/full.jar
2. 打出的jar包希望自动copy到工程的release目录下，便于查找
3. 另外希望通过时间戳对jar包自动重命名

思路

1. 在gradle中新建task -> exportJar
2. 执行build

   // task1.dependsOn(task2) 意味着执行task1前需要先执行task2
      exportJar.dependsOn(deleteOldJar, build)
   

3. 在build完成后执行createFullJarRelease

   task finalize {
   	 doLast {
   			 System.out.println("execute createFullJarRelease")
   			 createFullJarRelease.doTaskAction()
   	 }
   }
   //build执行完后执行finalize task,只需要在doLast中执行createFullJarRelease即可
   build.finalizedBy(finalize)
   

4. 清空release目录下的文件

   //遍历文件夹的文件全部清除，防止旧jar干扰新jar
   task deleteOldJar(type: Delete) {
   		FileTree tree = fileTree("release")
   			 tree.visit {
   	 			element -> delete element.file
   			 }
   }
   

5. 把fullJar/release下的jar拷贝到release文件夹下并重命名

   	//拷贝jar,并用日期作为版本，用时分秒区分jar包防止没有生成
   	task exportJar(type: Copy) {
   		from('build/intermediates/full_jar/release/')
   		into('release/')
   		 include('full.jar')
   		///Rename the jar
   		 def calendar = Calendar.getInstance()
   		var year = calendar.get(Calendar.YEAR)
   		 var month = calendar.get(Calendar.MONTH) + 1
   		 var day = calendar.get(Calendar.DAY_OF_MONTH)
   		 var sdf = new SimpleDateFormat("HHmmss")
   		var jarName = "sdk_v" + year + "." + month + "." + day + "_" +sdf.format(calendar.getTime()) + ".jar"
   		rename('full.jar', jarName)
   }
   

执行task日志

代码

module的.gradle文件

///
task finalize {
    doLast {
        System.out.println("execute createFullJarRelease")
        createFullJarRelease.doTaskAction()
    }
}
build.finalizedBy(finalize)

task deleteOldJar(type: Delete) {
    FileTree tree = fileTree("release")
    tree.visit {
        element -> delete element.file
    }
}

//task to export contents as jar
task exportJar(type: Copy) {
    from('build/intermediates/full_jar/release/')
    into('release/')
    include('full.jar')
    ///Rename the jar
    def calendar = Calendar.getInstance()
    var year = calendar.get(Calendar.YEAR)
    var month = calendar.get(Calendar.MONTH) + 1
    var day = calendar.get(Calendar.DAY_OF_MONTH)
    var sdf = new SimpleDateFormat("HHmmss")
    var jarName = "sdk_v" + (year - 2017) + "." + month + "." + day + "_" + sdf.format(calendar.getTime()) + ".jar"
    rename('full.jar', jarName)
}
exportJar.dependsOn(deleteOldJar, build)