Android hotkey problem

I can’t get hotkeys to work for the life of me. I’ve set up retroarch on a couple of raspberry pis without issue and felt I was pretty familiar with the process, maybe not the case. I’m using an odroid xu3 single board computer running android 4.4.2. My retroarch.cfg has input_enable_hotkey_btn = 109 input_exit_emulator_btn = 108 which would allow start/select on my gamepad to exit the game. I’ve tried setting up hotkeys for the keyboard alone, also without success. I would like to know if anyone has enabled hotkeys on android (if so I’d appreciate your retroarch.cfg) or if it is known that they aren’t supported in the android version.

In case it’s relevant, the gamepad configure option in the GUI didn’t work for me, I set up the input section of my .cfg manually.

that means you can exit the emulator when HOLDING 109 and pressing 108

That is correct, however that is not what happens. The buttons function as usual, hotkey not enabled.