Unpack or pack an apk

apk.sh

#!/usr/bin/env bash

DIR=`dirname $0`
TARGET_APK="target.apk"
TARGET_DIR="target"

if [[ ! "$1" =~ ^(unpack|pack)$ ]]; then
  echo "Choose 'unpack' or 'pack'"
  exit 1
fi

if [[ $1 == "unpack" ]]; then
  rm -rf $DIR/$TARGET_DIR
  apktool d $DIR/$TARGET_APK
elif [[ $ENV == "pack" ]]; then
  apktool b $DIR/$TARGET_DIR
  keytool -genkey -v -keystore $DIR/$TARGET_DIR/temporary.keystore -alias temporary -keyalg RSA -keysize 2048 -validity 20000
  jarsigner -keystore $DIR/temporary.keystore -verbose $DIR/result.apk temporary
fi