---
title: UIAlertControllerSeverity.critical
framework: uikit
role: symbol
role_heading: Case
path: uikit/uialertcontrollerseverity/critical
---

# UIAlertControllerSeverity.critical

Indicates that the system should present the alert using the critical, or caution, style.

## Declaration

```swift
case critical
```

## See Also

### Constants

- [UIAlertControllerSeverity.default](uikit/uialertcontrollerseverity/default.md)