android 多渠道脚本

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背景

多渠道打包这个本没啥难度，但是按照官方的做法一般都要重新编译 apk, 当 apk 很大的时候，会非常耗时，美团已经提供了一种解决思路，请点击这里查看美图的思路, 之前有个群里的同学想让我将他写的 python 代码改成 shell,  好久没写 shell 也想增加点熟练度，所以便欣然同意了。

功能

将工作目录下指定的 apk 文件夹中的 apk 进行复制，然后在新的 apk 的 meta-info 目录下创建一个空的文件，这个文件以 channel.txt 中指定的渠道命名

代码

shell脚本实现

# !/usr/bin/bash

  model=$1

channel_file=$2
# 空文件 便于写入此空文件到apk包中作为channel文件
src_empty_file='czt.txt'
# 创建一个空文件（不存在则创建）
if [ -e $src_empty_file ]; then
    rm -i $src_empty_file
fi

touch $src_empty_file

if [ ! $? -eq 0 ]; then
   exit 1;
fi

# 获取当前目录中所有的apk源包
src_apks=()
if [ "$model" = "" ];then
　　file_path="."
 else
　　file_path="./$model"
fi

for file in $(cd $file_path ; ls); do
  file=${file_path}$file

  if [ -f $file ];then
      basename $file | grep '\.apk$' && src_apks=("${src_apks[@]}" "$file")
  fi
done

# 获取渠道列表
if [ "$channel_file" = "" ];then
    channel_file='channel.txt'    
fi
f=$(cat $channel_file)

function copy(){
 if [ ! -e $1 ];then
 return 1
 fi
 
 cp $1 $2
} 


for src_apk in ${src_apks[@]};do
    # file name (with extension)
    src_apk_file_name=$(basename $src_apk)
    # 分割文件名与后缀
    src_apk_name=${src_apk_file_name%.apk}
    # 后缀名，包含.   例如: ".apk "
    src_apk_extension=${src_apk_file_name##*.}
    # 创建生成目录,与文件名相关
    output_dir='output-'${src_apk_name}/
    if [ -e $output_dir ]; then
        rm -r $output_dir
    fi
    mkdir -p $output_dir

    # 遍历渠道号并创建对应渠道号的apk文件
    for line in $f;do
         target_channel=$line
         target_apk=${output_dir}${src_apk_name}-${target_channel}${src_apk_extension}
        echo "${output_dir}=======>${src_apk_name}=======>, ${target_channel}  =======>, ${src_apk_extension}  =======>"
        # 拷贝建立新apk
        cp  $src_apk $target_apk
        # 初始化渠道信息
        empty_channel_file="META-INF/cztchannel_${target_channel}"
        # 写入渠道信息
        if [ ! -e $(dirname $empty_channel_file) ]; then
            mkdir -p $(dirname $empty_channel_file)
        fi
        touch $empty_channel_file
        jar -uvf $target_apk -C . $empty_channel_file
    done
done

 python 脚本实现

# !/usr/bin/env python3

#  -*- encoding:utf-8 -*-

import os
import sys
import zipfile
'''
   多渠道打包
'''

dir_path = "./"

channel_path = "channel.txt"

apk_files = []
channels = []
ext = ["apk", ]

class Usage(object):
    info = [];
    def __init__(self, *args, **kw):
        pass

    @staticmethod
    def print():
        pass


class Shift(object):
    def __init__(self, *args, **kw):
        if 'argvs' in kw:
            self.argvs = kw['argvs']
        else:
            self.argvs = sys.argv[:]


    def __call__(self, *args, **kwargs):
        if self.argvs:
            return self.argvs.pop(0)
        else:
            return None

def getApkFiles():
    apk_files = []
    for file in os.listdir(dir_path):
        if os.path.splitext(file)[1][1:] in ext:
            apk_files.append(os.path.join(dir_path, file))
    return apk_files


def getChannels():
    channels = []
    with open(channel_path, 'r') as f:
        channels = f.readlines()

    return channels



def params():
    global dir_path

    global channel_path

    global apk_files
    global channels

    if len(sys.argv) != 1:
        shift = Shift(sys.argv[1:])
        p = shift()
        if p:
            dir_path = p

        p = shift()
        if p:
            channel_path = p

    apk_files = getApkFiles()

    channels = getChannels()

def copy(oldfile, newfile):
    if os.path.exists(newfile):
        os.remove(newfile)
    with open(oldfile, 'rb') as f:
        data = f.read()
        with open(newfile, 'wb') as f1:
            f1.write(data)


def main():
    import shutil
    temp_channel_path = './temp_channel.txt'
    with open(temp_channel_path, 'w') as f:
        pass

    for apk_file in apk_files:
        apk_file_name = os.path.splitext(os.path.basename(apk_file))[0]
        out_apk = 'output_%s' % apk_file_name
        out_abs_path = os.path.join(dir_path, out_apk)
        if os.path.exists(out_abs_path):
            shutil.rmtree(out_abs_path)
        os.mkdir(out_abs_path)
        for channel in channels:
            target_apk = os.path.join(out_abs_path, 'out_%s_%s.apk' % (channel.strip(), apk_file_name.strip()))
            copy(apk_file, target_apk)
            zipped = zipfile.ZipFile(target_apk, 'a', zipfile.ZIP_DEFLATED)
            zipped.write(temp_channel_path, '%s/czt_channel_%s' % ('META-INF', channel))
            zipped.close()
    os.remove(temp_channel_path)



if __name__ == '__main__':
    params()
    main()

 后记

目前的 v1 签名机制下，对 meta-info 下的修改不会影响到 apk 签名，但是在 Android 7.0 后提供了 v2 的签名机制，这时候需要重新开发注入机制了，详细请点我