Xiaomi Home Assistant: Resolving Warnings for Roborock S5 and Viomi V2 Max

## Introduction to Xiaomi Home Assistant
The Xiaomi Home Assistant is a cutting-edge smart home system designed to integrate and control various Xiaomi devices, including vacuums like the Roborock S5 and Viomi V2 Max. However, some users have encountered warnings in their Home Assistant logs regarding the setting of states directly for these vacuums, despite updates intended to resolve these issues.
## Understanding the Warnings
The warnings pertain to the custom integration 'xiaomi_home' setting state directly for entities like 'xiaomi_home.roborock_de_118124482_s5' and 'xiaomi_home.viomi_de_489923879_v35'. These entities, belonging to the 'Vacuum' class within the 'custom_components.xiaomi_home.vacuum' module, are advised to implement the 'activity' property. This implementation should return the state using the VacuumActivity enum to prevent compatibility issues with future versions of Home Assistant, specifically beyond 2026.1.
## Steps to Reproduce the Issue
1. **Observation in Logs**: The issue is visible as a warning in the Home Assistant logs, not as an error, indicating that while the system is functional, there's a need for improvement to ensure future compatibility.
2. **Expected Behavior**: Ideally, there should be no warnings, reflecting a seamless integration and adherence to best practices for state management in Home Assistant.
## Timeline and Environment
- **Reproduce Time**: The issue was observed on 2025-07-22 18:22.
- **Home Assistant Logs**: Detailed logs highlight the custom integration 'xiaomi_home' and its interaction with specific vacuum devices.
- **Log Timezone**: The logs are based on the Belgium timezone.
- **Home Assistant Core Version**: The system is running on version 2025.7.3.
- **Home Assistant Operation System Version**: Version 15.2 is in use.
- **Xiaomi Home Integration Version**: The integration is at version v0.4.0.
## Conclusion and Recommendations
Given the information and the nature of the warnings, it's clear that an update or patch is necessary to ensure the 'xiaomi_home' integration complies with the recommended state management practices. Users experiencing these warnings are encouraged to monitor the Xiaomi Home Assistant community and GitHub repository for updates or to submit a bug report to prompt a resolution. Implementing the 'activity' property and using the VacuumActivity enum for state management will not only address the current warnings but also future-proof the integration against upcoming Home Assistant versions.