Android Studio记录一个错误：＞adb shell error: device offline

错误分析

E:\Android\network\VideoBox>adb connect 172.16.3.xxx:xxx
already connected to 172.16.3.xxx:xxx

E:\Android\network\VideoBox>adb shell
error: device offline

adb connect已经连接上设备，但是adb shell无法进入盒子，将设备进行关机重启后依旧无法解决这个问题。大概率是端口被进程占用导致adb无法进行工作

解决办法

查看端口情况，关闭占用端口的进程再尝试连接

adb nodaemon server

netstat -ano|findstr  "5037"

修改成对应的PID即可

tasklist | findstr "4648"

taskkill /pid "4648" /t /f

E:\Android\network\VideoBox>adb connect 172.16.3.xxx:xxx
already connected to 172.16.3.xxx:xxx

E:\Android\network\VideoBox>adb shell
error: device offline

E:\Android\network\VideoBox>adb nodaemon server
adb F 11-23 13:58:08 11792 10036 main.cpp:144] could not install *smartsocket* listener: cannot bind to 127.0.0.1:5037: 閫氬父姣忎釜濂
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E:\Android\network\VideoBox>netstat -ano|findstr  "5037"
  TCP    127.0.0.1:5037         0.0.0.0:0              LISTENING       4648
  TCP    127.0.0.1:5037         127.0.0.1:50881        ESTABLISHED     4648
  TCP    127.0.0.1:5037         127.0.0.1:55971        FIN_WAIT_2      4648
  TCP    127.0.0.1:5037         127.0.0.1:55973        TIME_WAIT       0
  TCP    127.0.0.1:50881        127.0.0.1:5037         ESTABLISHED     6608
  TCP    127.0.0.1:55971        127.0.0.1:5037         CLOSE_WAIT      6608

E:\Android\network\VideoBox>tasklist | findstr "4648"
adb.exe                       4648 Console                    1      9,556 K

E:\Android\network\VideoBox>taskkill /pid "4648" /t /f
成功: 已终止 PID 4648 (属于 PID 7848 子进程)的进程。

E:\Android\network\VideoBox>adb shell
error: no devices/emulators found

E:\Android\network\VideoBox>adb connect 172.16.3.xxx:xxx
connected to 172.16.3.xxx:xxx

E:\Android\network\VideoBox>adb shell
root@xxxx:/ #

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