android插件自定义之多渠道打包插件（支持微信资源混淆and

2017-12-15 本文已影响944人君莫醉

前言

自定义android studio插件？想想就觉得是一件令人兴奋的事。最近闲来无事决定完善之前的一些代码操作，然后就想到了之前的apk多渠道打包工具，觉得还是太麻烦，何不用插件的形式引入工程自动打包呢。说做就做...

资料整理

1.插件入门：http://blog.csdn.net/sbsujjbcy/article/details/50782830
2.插件进阶：AndroidComponent组件化方案,AndResGuard资源混淆库的插件源码
3.渠道包原理：将渠道打入assets里的文件中，我之前的文章有介绍过此原理的打包工具

简单流程图

BDB1A4CD-6D45-4470-BE5B-56F6A891BC69.png

ejApkRelease task

1.初始化task

创建EjApkTask继承gradle api的DefaultTask来创建自己的task


public class EjApkTask extends DefaultTask{

    def android
    def buildConfigs = []

    EjApkTask(){
        description = 'Assemble ej APK'
        group = 'andChannelApk'
        outputs.upToDateWhen { false }
        android = project.extensions.android
        ...
    }

    @TaskAction
    run(){
        ...
    }

}

其中：
group表示在android studio 右侧的gradle任务列表为此task创建一个自己的目录：

DB39201E-B335-4473-AD38-FD531407425B.png

会自动将大写转为小写，写法参照AndResGuard原码写的

run方法表示此task运行的方法

创建，并初始化ejApkRelease task

        project.afterEvaluate {
            System.out.println("ejApkRelease is start")
            def taskName = "resguardRelease"
            def ejTask = "ejApkRelease"
            def task = project.task(ejTask, type: EjApkTask)
            //判断是否存在resguardRelease task
            if(project.tasks.findByPath(taskName) != null){
                System.out.println("ejApkRelease is exit")
                task.dependsOn "resguardRelease"
            } else {
                task.dependsOn "assembleRelease"
            }
        }

其中project.afterEvaluate闭包的调用位置实在项目的settings.gradle构建之后，build.gradle构建之前。
task.dependsOn 表示将此任务task的调用位置放在resguardRelease或者assembleRelease task的后面

2.task逻辑处理

通过api 获取app-release.apk文件位置，获取gradle配置的签名文件，获取渠道文件的路径配置：

        //渠道文件配置位置
        String channel = project.properties.get("channelFile")
        buildConfigs.each{ config ->
            if (config.file == null || !config.file.exists()) {
                System.out.println("ejApkRelease EjApkTask apk file not exit 1")
                return
            }
            //签名文件
            def signConfig = config.signConfig
            //app-release.apk位置
            String path = config.file.getAbsolutePath()
            System.out.println("path:"+path)
            InputParam.Builder builder = new InputParam.Builder()
                    .setChannel(channel)
                    .setInputFolder(useFolder(config.file))
                    .setApkPath(path)
                    .setSignFile(signConfig.storeFile)
                    .setKeypass(signConfig.keyPassword)
                    .setStorealias(signConfig.keyAlias)
                    .setStorepass(signConfig.storePassword)

            InputParam inputParam = builder.build()
            Main.gradleRun(inputParam)

        }

其中：
project.properties.get() 表示获取运行项目(app)目录下的gradle.properties文件里面的配置

解压，修改渠道文件，打包签名

1.解压：

解压方式很简单，通过java自带api实现解压：

@SuppressWarnings("rawtypes")
    public static HashMap<String, Integer> unZipAPk(String fileName, String filePath) throws IOException {
        checkDirectory(filePath);
        ZipFile zipFile = new ZipFile(fileName);
        Enumeration emu = zipFile.entries();
        HashMap<String, Integer> compress = new HashMap<>();
        while (emu.hasMoreElements()) {
            ZipEntry entry = (ZipEntry) emu.nextElement();
            if (entry.isDirectory()) {
                new File(filePath, entry.getName()).mkdirs();
                continue;
            }
            BufferedInputStream bis = new BufferedInputStream(zipFile.getInputStream(entry));

            File file = new File(filePath + File.separator + entry.getName());

            File parent = file.getParentFile();
            if (parent != null && (!parent.exists())) {
                parent.mkdirs();
            }
            //要用linux的斜杠
            String compatibaleresult = entry.getName();
            if (compatibaleresult.contains("\\")) {
                compatibaleresult = compatibaleresult.replace("\\", "/");
            }
            compress.put(compatibaleresult, entry.getMethod());
            FileOutputStream fos = new FileOutputStream(file);
            BufferedOutputStream bos = new BufferedOutputStream(fos, BUFFER);

            byte[] buf = new byte[BUFFER];
            int len;
            while ((len = bis.read(buf, 0, BUFFER)) != -1) {
                fos.write(buf, 0, len);
            }
            bos.flush();
            bos.close();
            bis.close();
        }
        zipFile.close();
        return compress;
    }

1.修改渠道文件：

先删除解压包存在的签名文件，再寻找assets文件夹是否存在，存在直接修改渠道文件，不存在则添加assets文件夹并添加渠道文件，通过渠道文件获取要打的渠道，循环修改，并打包，签名：

public void buildApk() throws Exception {
        //删除签名文件
        File sinFile = new File(tempFile,"META-INF");
        if(sinFile.exists()){
            FileZipUtils.deleteDir(sinFile);
            System.out.println("删除原签名文件");
        }
        //存放签名包位置
        File fileassets = new File(tempFile,"assets");
        if(!fileassets.exists()){
            fileassets.mkdirs();
        }
        File fileEjChannel = new File(fileassets,"ej_channel");
        if(!fileEjChannel.exists()){
            fileEjChannel.createNewFile();
        }

        //打包apk位置
        File fileChannel = new File(fileApk,"channel");
        if(fileChannel.exists()){
            fileChannel.delete();
        }
        File unSinedFiles = new File(fileChannel,"unsign");
        File sinedFiles = new File(fileChannel,"sign");
        unSinedFiles.mkdirs();
        sinedFiles.mkdirs();
        File fileChannelTxt = new File(inputParam.channel);
        if(!fileChannelTxt.exists()){
            System.out.println("channel.txt not exit");
            return;
        }
        //获取所有渠道
        InputStream in = new FileInputStream(fileChannelTxt);
        int size = in.available();
        byte[] buffer = new byte[size];
        in.read(buffer);
        in.close();
        String allChannel = new String(buffer, "utf-8");
        //获取所有渠道数组
        String[] channels = allChannel.split(",");
        //循环渠道打包
        for(String content : channels){
            {
                OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream(fileEjChannel),"UTF-8");
                System.out.println("channel content:"+content);
                //渠道名称加密
                String channel = ChannelEncode.encode(content);
                //不加密
//                String channel = content;
                System.out.println("channel:"+channel);
                osw.write(channel, 0, channel.length());
                osw.flush();
                osw.close();
                //压缩文件
                File outApkUnsin = new File(unSinedFiles,"release-"+content+"-unsin.apk");

                FileZipUtils.compress(tempFile,outApkUnsin);
                //签名
                File outApkSign = new File(sinedFiles,"release-"+content+"-sin.apk");
                signWithV1sign(outApkUnsin,outApkSign);
            }
        }

    }