The AVD Manager in Android Studio doesn\'t show my device but adb devices does show it. Am I missing something obvious here?
If you use Samsung you can download and install the device driver from Samsung.
Note
You need to enable ADB mode(Like the eleventh comment)
You need to set Target in Android Studio to "Open Select Deployment Target" Dialog. To set Target : Run > Edit Configurations > Targets > Open Select Deployment Target Dialog