英文原版：http://ibotpeaches.github.io/Apktool/install/
1 创建Bash，并命名为apktool（不要是文本哦）：
#!/bin/bash
#
# Copyright (C) 2007 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# This script is a wrapper for smali.jar, so you can simply call "smali",
# instead of java -jar smali.jar. It is heavily based on the "dx" script
# from the Android SDK
# Set up prog to be the path of this script, including following symlinks,
# and set up progdir to be the fully-qualified pathname of its directory.
prog="$0"
while [ -h "${prog}" ]; do
newProg=`/bin/ls -ld "${prog}"`
newProg=`expr "${newProg}" : ".* -> \(.*\)$"`
if expr "x${newProg}" : 'x/' >/dev/null; then
prog="${newProg}"
else
progdir=`dirname "${prog}"`
prog="${progdir}/${newProg}"
fi
done
oldwd=`pwd`
progdir=`dirname "${prog}"`
cd "${progdir}"
progdir=`pwd`
prog="${progdir}"/`basename "${prog}"`
cd "${oldwd}"
jarfile=apktool.jar
libdir="$progdir"
if [ ! -r "$libdir/$jarfile" ]
then
echo `basename "$prog"`": can't find $jarfile"
exit 1
fi
javaOpts=""
# If you want DX to have more memory when executing, uncomment the following
# line and adjust the value accordingly. Use "java -X" for a list of options
# you can pass here.
#
javaOpts="-Xmx512M"
# Alternatively, this will extract any parameter "-Jxxx" from the command line
# and pass them to Java (instead of to dx). This makes it possible for you to
# add a command-line parameter such as "-JXmx256M" in your ant scripts, for
# example.
while expr "x$1" : 'x-J' >/dev/null; do
opt=`expr "$1" : '-J\(.*\)'`
javaOpts="${javaOpts} -${opt}"
shift
done
if [ "$OSTYPE" = "cygwin" ] ; then
jarpath=`cygpath -w "$libdir/$jarfile"`
else
jarpath="$libdir/$jarfile"
fi
# add current location to path for aapt
PATH=$PATH:`pwd`;
export PATH;
exec java $javaOpts -Djava.awt.headless=true -jar "$jarpath" "$@"
2 下载 https://bitbucket.org/iBotPeaches/apktool/downloads，选择一个版本下载；
3 讲下载的文件修改名字为apktool.jar;
4 cp apktool.jar apktool /usr/local/bin
5 chmod +x /usr/local/bin apktool.jar apktool
6 terminal运行apktool，出现下图，安装成功。