环境配置
安卓虚拟机连接调试工具：adb
下载platform-tools 工具包后，
下载地址：https://pan.baidu.com/s/1iHjj87629-vgK_VRybBxPw 密码: w264
把platform目录添加到环境变量里
打开mac的终端，
open -e .bash_profile
添加目录，
export PATH=“/Users/wangxianghua/anaconda2/bin:$PATH” 添加platform-tools/目录成为
export PATH=“/Users/wangxianghua/anaconda2/bin:/Users/wangxianghua/Downloads/platform-tools/:$PATH”，
注意platform-tools后面有斜杠／，一开始没有加入斜杠，尝试了很多别的办法。
然后
source .bash_profile
此时终端，输入adb，不再提示command not found: adb
开始提示使用方法
adb
Android Debug Bridge version 1.0.39
Revision 3db08f2c6889-android
Installed as /Users/wangxianghua/Downloads/platform-tools//adb
global options:
-a listen on all network interfaces, not just localhost
-d use USB device (error if multiple devices connected)
-e use TCP/IP device (error if multiple TCP/IP devices available)
-s SERIAL
use device with given serial number (overrides $ANDROID_SERIAL)
-p PRODUCT
连接到安卓虚拟机
1.adb connect 101.236.31.X
显示
* daemon not running. starting it now at tcp:5037 *
* daemon started successfully *
connected to 101.236.31.X:5555
2.adb shell
显示
shell@remix_x86_64:/ $
3.切换成root
显示
shell@remix_x86_64:/ $ su
root@remix_x86_64:/ #
4.安卓虚拟机修改DNS
adb shell 里用 root 权限，执行
ndc resolver setnetdns 100 localdomain [119.29.29.29](http://119.29.29.29/) [114.114.114.114](http://114.114.114.114/)
最好写入启动文件，不然重启 DNS 会仍然无效 /system/etc/init.sh
