Question

I’ve been developing an Android app using Eclipse and the Android plug-in for Eclipse and all these days, I would just plug in my phone into the computer and hit Run and would see my app run on my Samsung Galaxy Phone. But now it shows me a window like the following and am unable to choose my phone as the device because under the “State” column it says “Offline” even when the phone is plugged into my computer. I can’t even use the emulator because its painfully slow on my computer.

Answer 1

Refer this link

Android device chooser – My device seems offline

• Restart adb by issuing ‘adb kill-server’ followed by ‘adb
  start-server’ at a cmd prompt
• Disable and re-enable USB debugging on the phone
• Rebooting the phone if it still doesn’t work.