Adb over wifi killed off after usb disconnect?

问题:

So with my nexus 5 im easily able to do something like this to connect adb over wifi:

adb tcpip 5555
adb connect 192.xxx.x.xx

and then disconnect the usb cable. I have another device im trying to connect (Dell venue 8 tablet) but it seems to disconnect from the adb wifi connection a split second after the usb is pulled.

I use the same commands:

adb tcpip 5555 (<- without another device connected)
adb connect 192.xxx.x.xx (tablet ip here)

Executing adb devices after this shows both the wifi adb connection as well as the usb connection, but with the tablet, as soon as I kill the usb connection, the wifi adb connection also terminates.

Does anyone have any thoughts on why this may be happening?

回答1:

Try to connect to it without the usb cable.

• Step 1. Use wifi adb on your phone to get the ip (needs rooted phone, but because your on stackoverflow I guess you have one).
• step 2. Type in your console adb connect (ip shown in wifi adb)

If this dosnt work please post the exact message you get in your console when trying to connect.

Non-Rooted Solution:

• Enable USB-debugging in the developer setting and connect your phone to your computer via USB.
• Run the adb command, adb tcpip 5555 (Make sure port 5555 is not blocked by any firewall programs)

• Get your Wi-Fi IP address assigned to your device and run the adb command

  adb connect <IP_ADDRESS>.For example, adb connect 192.168.1.133

• Now you can disconnect the usb cable and run adb shell, adb install, or adb push commands via your Wi-Fi.

• Inorder to switch back to USB mode and disable the Wireless mode, run the following adb command.

  adb usb

• You can also simply reboot your phone to switch back to the USB mode.

回答2:

Prerequisites

Android device and computer should be connected in same network. (If you don't have any network than you can create your own by enabling Wifi hotspot available in your device)

Step 1:

Connect Android device with USB cable to computer

Step 2: Use following command in terminal to make sure adb is running in USB mode.

$adb usb

restarting in USB mode Connect to the device over USB.

Step 3:

Execute following command in terminal to make sure adb identify/list gets connected with the device.

$adb devices

Step 4: Change adb mode from USB to tcpip using following command.

$adb tcpip 5555

restarting in TCP mode port: 5555

Step 5: Now, adb is running over TCP/IP mode, Let’s find IP address of Android device.

Go to Settings in Android device -> About -> Status -> IP address. note down the IP address of connected Android Device.

Step 6: Use following command to connect ADB with IP address

$adb connect #.#.#.#

connected to #.#.#.#:5555

Step 7: Now adb is working over Wi-fi, You can remove USB cable from Android device.

Step 8: To confirm adb is working over Wi-fi and your device is still connect. you can use following command

$adb devices

#.#.#.#:5555 device

You’re now ready to go!, Enjoy ADB over Wi-fi.

Use following command to change ADB mode to USB

$adb usb

回答3:

I would suggest to:

1. Make sure both of your devices are on the same network.
2. While running adb connect give the port number too
3. Make sure the default port 5555 is not used by any other service
4. When you changed the device did you double check on the ip (In wifi connection IP keeps changing)

回答4:

My research results that it is some bug or unexpected behavior in Android Studio 2.3.1, which kills running adb server (with all open connections) in some situations. In example when you disconnect USB cable or close Android Studio application.

Steps to reproduce:

1. Create TCP connection to android device by console window (i.e. adb connect 192.168.0.96)
2. Check device is connected (adb devices)
3. Run Android Studio and load any project
4. Open Select Deployment Target window
5. Close this window and Android Studio
6. Check that adb server was killed (adb devices).