When using Flutter, I can't connect my Android phone to ADB with WiFi. All commands, like "adb devices", and "adb connect 192.168.1.1:5555" print errors. How to resolve this?
I had faced a similar issue myself when I first set up flutter..
I could easily connect my android phone using adb over wifi and debugging native code in android studio worked flawlessly..... using---
$ adb connect <device-ip>:5555
however when I ran "flutter devices" ... or "flutter run" .. the existing devices connected wirelessly using adb automatically got disconnected...
I received the following error in adb when I tried to connect adb during a flutter debug session -
ADB server did not ACK
Full server startup log: /tmp/adb.1000.log
Server had pid: 27779
--- adb starting (pid 27779) ---
adb I 07-29 02:24:57 27779 27779 main.cpp:57] Android Debug Bridge version 1.0.39
adb I 07-29 02:24:57 27779 27779 main.cpp:57] Version 1:8.1.0+r23-5~18.04
adb I 07-29 02:24:57 27779 27779 main.cpp:57] Installed as /usr/bin/adb
adb I 07-29 02:24:57 27779 27779 main.cpp:57]
adb I 07-29 02:24:57 27779 27779 adb_auth_host.cpp:416] adb_auth_init...
adb I 07-29 02:24:57 27779 27779 adb_auth_host.cpp:174] read_key_file '/home/<user>/.android/adbkey'...
adb I 07-29 02:24:57 27779 27779 adb_auth_host.cpp:391] adb_auth_inotify_init...
adb server killed by remote request
On digging a little into forums and blog posts... i identified the issue here..
It seemed that Android Studio had downloaded and maintained its own copy of adb under the Android/ directory and ... incidentally flutter was using using that instead of the system provided binary ( /usr/bin/adb in linux ) ..
So flutter was killing the default adb server before starting its own adb .... and preventing other the system binary to run during a debug session.
Once this issue is identified ... fixing it is simple. I just symlinked the <android-platform-tools dir>/adb to /usr/bin/adb and everything worked fine....
alternately we could just delete one of the two binaries and change the required environment variables to achieve the same goal.