Right now I am trying to connect to Samsung Captivate. I see the device, but adb devices shows and empty list. Debugging in Eclipse I cannot see the device. I see it in the Windows 7 device list however. phone says connected. But adb devices does not list anything. What else do I need to do?
Samsung has a separate driver for connecting their Android devices for to Windows machines. I think there is an option in Kies to install this.
This solution is to connect via wifi, so there is no installation of drivers needed.
First you need to download the shell terminal emulator on your android phone. make sure both your android phone and computer are on the same wifi connection. after downloading the application, open it and type this:
- type "su" and press Enter.
- type "setprop service.adb.tcp.port 5555" and press Enter.
- type "stop adbd" and press Enter.
- type "start adbd" and press Enter.
after that.
navigate through your SDK folder wherein you can find an "Adb.exe" and open that in CMD and type this.
- type "adb connect " and press Enter.
and you are done.
来源：https://stackoverflow.com/questions/4919506/android-usb-to-samsung-eclipse-cannot-connect