---
title: MKDirections.DirectionsHandler
framework: mapkit
role: symbol
role_heading: Type Alias
path: mapkit/mkdirections/directionshandler
---

# MKDirections.DirectionsHandler

The block to use for processing the requested route information.

## Declaration

```swift
typealias DirectionsHandler = (MKDirections.Response?, (any Error)?) -> Void
```

## Parameters

- `response`: The response parameter contains the route information for the request. If an error occurs or the framework can’t determine a route, this parameter is nil.
- `error`: The error parameter contains information about any errors that occur. If no errors occur, this parameter is nil.

## Discussion

Discussion The implementation of your block needs to check for a value in the error parameter and, if that parameter is nil, incorporate the route information from the response parameter.

## See Also

### Getting the directions

- [calculate(completionHandler:)](mapkit/mkdirections/calculate(completionhandler:).md)
- [MKDirections.Response](mapkit/mkdirections/response.md)