Connecting a Bluetooth Controller

Hi,

I am a Game developer and working in Game Engines like Unity and Unreal Engine for 3 years. I'm now starting with native android developing and have minimal knowledge in it. And currently I'm developing an native android game playable with a joystick.

My query is that, Will I be able to connect an external Bluetooth Controller/Joystick (like an Xbox controller or any other Bluetooth joystick) to an android device using my application. I know that we can connect to any other Bluetooth device (like a phone or a BT Headset) using Android APIs.

Any help me on this topic would be highly appreciated. Thanks in advance.