需求

为什么打那么多的渠道包，相信这个不需要说明了，中国android发布的渠道多也是没有办法的。

多渠道打包的原理参照美团多渠道打包,python的实现方法参照GavinCT

我的Java实现

我是做Android的，所以就用java实现了一遍。一个巩固一下知识，二是Android 的环境下面一定都有java环境了，不需要再装python的环境了。下面是具体的步骤。

info

apks //存放需要添加渠道的apk文件

channel.txt //渠道信息文件

czt.txt //空文件

第一步加载 apks目录下载所有的 apk文件

    private void initApks(){        if (apks == null) {            apks = new ArrayList<>();        }else {            apks.clear();        }        File apkDir = new File(channelConfigPath, "info/apks");        if (!apkDir.exists()){            throw new IllegalArgumentException("can't find apk files in :"  + apkDir.getAbsolutePath());        }        File[] files = apkDir.listFiles(new FileFilter() {            @Override            public boolean accept(File pathname) {                return pathname.getName().endsWith(".apk");            }        });        for (File f : files){            apks.add(f);        }        if (apks.isEmpty()){            throw new RuntimeException("not fond apk in :" + apkDir.getAbsolutePath());        }        System.out.println("init apk finish");    }

第二步加载渠道文件，文件内容结构如下：

360
baidu
等等

    private void initChannel(){        if (channels == null){            channels = new ArrayList<>();        }else {            channels.clear();        }        File channelFile = new File(channelConfigPath, "info/channel.txt");        if (!channelFile.exists()){            throw new IllegalArgumentException("can't find channel file at :"  + channelFile.getAbsolutePath());        }        BufferedReader reader = null;        try {            reader = new BufferedReader(new FileReader(channelFile));            String ch = null;            while ((ch = reader.readLine()) != null){                channels.add(ch);            }        } catch (FileNotFoundException e) {            e.printStackTrace();            throw new RuntimeException("read channel file error");        } catch (IOException e) {            e.printStackTrace();            throw new RuntimeException("read channel file error");        }finally {            if (reader != null){                try {                    reader.close();                } catch (IOException e) {                    e.printStackTrace();                }            }        }        System.out.println("init channel finish");    }

第三步生成一个空文件，用来添加到apk里面

    private void initEmptyFile(){        if (srcEmptyFile == null){            srcEmptyFile = new File(channelConfigPath, "info/czt.txt");        }        if (!srcEmptyFile.exists()) {            try {                srcEmptyFile.createNewFile();            } catch (IOException e) {                e.printStackTrace();                throw new RuntimeException("create czt.txt file eroor");            }        }    }

最后生成渠道的apk文件

private void buildChannelApk(){        for (File f : apks){            String fileName = f.getName();            String filerRealName = fileName.split("\\.")[0];            File storeDir = new File(f.getParentFile(), filerRealName);            if (!storeDir.exists()){                storeDir.mkdirs();            }            for (String channel : channels){                File outChannelFile = new File(storeDir, filerRealName + "_" + channel + ".apk");                try {                    FileUtils.copyFile(f, outChannelFile);                } catch (IOException e) {                    e.printStackTrace();                    throw new RuntimeException("copy apk file error" + f.getAbsolutePath());                }                try {                    Map env = new HashMap<>();                    env.put("create", "true");                    // locate file system by using the syntax                    // defined in java.net.JarURLConnection                    URI uri = URI.create("jar:" + outChannelFile.toURI());                    try (FileSystem zipfs = FileSystems.newFileSystem(uri, env)) {                        Path externalTxtFile = Paths.get(srcEmptyFile.toURI());                        Path pathInZipfile = zipfs.getPath(String.format(CHANNEL, channel));                        // copy a file into the zip file                        Files.copy(externalTxtFile, pathInZipfile,                                StandardCopyOption.REPLACE_EXISTING);                    }                } catch (IOException e) {                    e.printStackTrace();                    throw new RuntimeException("build file error");                }finally {                }                System.out.println("build " + outChannelFile.getName() +  " finish");            }            System.out.println("build apk finish");        }    }

获取渠道信息的代码参见GavinCT。
当前项目的源代码参见github

Android(安卓)多渠道打包

需求

我的Java实现

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