问题
I have tried downloading the Samsung specific drivers. It installs the modem, not sure if the adb bridge got installed. I don't see it in the device manager. I have installed kies 2.0, I have tried connecting USB via MASS storage, via Kies, and under no circumstances so far will ADB detect the device when running adb devices command. I got lots of suggestions to use Kies, I tried this. Don't see any real relationship between Kies and ADB which is a debug bridge. I simply have no clue what ADB is doing when I type adb devices. How does it look for devices, where does it check, where can i register my device with ADB?
回答1:
Apparently sometimes you need to uninstall and reinstall the driver multiple times before it works (http://androidforums.com/captivate-all-things-root/136373-adb-shell-error-device-not-found.html). Also, make sure that USB debugging is turned in your application settings.
回答2:
make sure you are using the correct drivers (32 bit or 64 bit). when you connect your phone in debug mode check device manager. I would bet you have an error in there. Try and delete the error and rescan for changes.
来源：https://stackoverflow.com/questions/4921826/android-adb-cannot-find-samsung-captivate