And while initially 'adb devices' shows the emulator as offline.after 2-3 minutes the list of attached devices becomes blank.
Not even the android home screen or the android logo.
But even after waiting for as long as 2-3 hrs, all it shows is a black screen. So, the problem is that when I try to launch an emulator by issuing the command emulator, an emulator comes up on the screen. I am just trying to start development in Android.