That’s it. The file does not contain drivers or complex scripts. Its sole purpose is to declare the feature flag. Without this file, even if your hardware supports USB OTG, the Android system will not inform apps that the feature exists.
What (camera, MIDI keyboard, etc.) are you trying to connect? androidhardwareusbhostxml file download 2021
For devices where USB host mode is physically supported but software-disabled, enthusiasts and developers often manually "install" this file. This generally requires Root Access That’s it
The android.hardware.usb.host.xml file is a part of the Android Open Source Project (AOSP) and defines the USB host API for Android. This file is used by the Android system to provide a standardized way for apps to interact with USB devices. androidhardwareusbhostxml file download 2021