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# locationManager(_:didDetermineState:for:)

Tells the delegate about the state of the specified region.

```
optional func locationManager(_ manager: CLLocationManager, didDetermineState state: CLRegionState, for region: CLRegion)
```

## Parameters

`manager`

The location manager object reporting the event.

`state`

The state of the specified region. For a list of possible values, see the [`CLRegionState`](/documentation/CoreLocation/CLRegionState) type.

`region`

The region whose state was determined.

## Discussion

The location manager calls this method whenever there is a boundary transition for a region. It calls this method in addition to calling the  [`locationManager(_:didEnterRegion:)`](/documentation/CoreLocation/CLLocationManagerDelegate/locationManager(_:didEnterRegion:)) and [`locationManager(_:didExitRegion:)`](/documentation/CoreLocation/CLLocationManagerDelegate/locationManager(_:didExitRegion:)) methods. The location manager also calls this method in response to a call to its [`requestState(for:)`](/documentation/CoreLocation/CLLocationManager/requestState(for:)) method, which runs asynchronously.

---

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