MKLocalSearch.start returning undocumented MKErrorGEOError

Question

MKLocalSearch.start is giving me MKErrorGEOError=-8 which is not documented in MKError.

This only happens in my CI machine!
This only happens when running the tests, the app code works fine
I tried enabling location services on macOS just in case, but it didn't work.
That machine shouldn't have any network requests/URLs blocked

What fixed for me was to add request.naturalLanguageQuery = "Venue", but I don't understand why, nor why this would fix an error that is happening in only 1 machine.

Does anyone have any information about this?

Here's some sample code:

Code Block let request = MKLocalSearch.Request()
request.naturalLanguageQuery = "Venue" // this fixes it, but why?!
let ibereCamargoMuseumCoordinates = CLLocationCoordinate2D(latitude: -30.0777596,
                                                           longitude: -51.2477212)
let span = MKCoordinateSpan(latitudeDelta: 5, longitudeDelta: 5)
request.region = MKCoordinateRegion(center: ibereCamargoMuseumCoordinates, span: span)
if #available(iOS 13.0, *) {
    request.resultTypes = .pointOfInterest
}
let localSearch = MKLocalSearch(request: request)
localSearch.start { response, error in
    ...
}

Here's some debugging output:

Code Block (lldb) po error
Error Domain=MKErrorDomain Code=4 "(null)" UserInfo={MKErrorGEOError=-8}
(lldb) po error.userInfo
▿ 1 element
  ▿ 0 : 2 elements
    ▿ key : AnyHashable("MKErrorGEOError")
      - value : "MKErrorGEOError"
    - value : -8

If you're interested I asked this on Stack Overflow too.

2.7k

Posted by

henrique

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Answer 1

According to the debug output you posted (Error Domain=MKErrorDomain Code=4) the error is MKError.Code.placemarkNotFound.

You can find the documentation for that error here: https://developer.apple.com/documentation/mapkit/mkerror/code/placemarknotfound

From the code you have posted it looks like what you are trying to achieve is to find points of interest in a given location, regardless of their names.

MKLocalSearch.Request is not designed for this type of task as it is built for searching using query strings.

MapKit provides another similar API, MKLocalPointsOfInterestRequest, which is specifically built for finding points of interest when you are not looking for a particular name.

You can find the documentation here: https://developer.apple.com/documentation/mapkit/mklocalpointsofinterestrequest/

Posted by

Frameworks Engineer

Thank you, we'll look into using MKLocalPointsOfInterestRequest.

Do you have any idea about why this happening only on the CI machine?

—
henrique

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Answer 2

This API is broken https://developer.apple.com/documentation/mapkit/mklocalpointsofinterestrequest/ and either returns MKErrorGEOError=-8 or returns invalid results.

Posted by

anils

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Answer 3

I am using MKLocalPointsOfInterestRequest which takes a central point and radius (or a region) to find places of interest within this boundary. It seems, as written in the documentation, written specifically for this purpose. Yet I get the MKErrorDomain code=4 as well, either when run on a simulator or run on an actual device. As a test, I fed it the coordinates of landmark, expecting it to at least return that. Kind of disappointing.

Posted by

peterent

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MKLocalSearch.start returning undocumented MKErrorGEOError

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