I tried to connect my Nexus S (Android version 2.3.5) to my macbook pro 10.7 (OSX Lion). However, the notification on android phone was just ON and OFF alternative. I tried this command on my terminal.
adb usb
>>error: device not found
adb devices
>>List of devices attached
>>[ nothing here ]
Please help me with this issue. Thank you!
Make sure you don't have a power-only USB cable. If the phone charges but Mac doesn't think it's there, it's a sure sign.