Debug Air on Android Device

I am trying to debug an air application on my Samsung Galaxy S4 with no luck. When I try to debug it, I get an error message stating that no connected device could be found. I followed all the troubleshooting here as well as other sites without finding a solution. When I attempt to find the devices connected using the ‘adb devices’ command, I don’t see any devices. The drivers are up to date, developer mode and usb debugging are both on, and the phone is connected as a media device so I don’t know what I’m missing. One website said to make sure ‘charge only’ is selected, but my phone does not have this option.

Any help at all would be greatly appreciated. Thanks!