Error in CallKit CallDirectory Extension

Question

im implementing callKit in my iOS project, im using the callDirectory extension to block and identify Numbers, the block part works perfectly , the only problem is when i try to add numbers to be identified:

private func retrievePhoneNumbersToIdentifyAndLabels() -> (phoneNumbers: [String], labels: [String])? {
    // retrieve list of phone numbers to identify, and their labels
    interDefaults?.synchronize()
    if let numbers = interDefaults!.string(forKey: "ident-numbers"){
        if let identities = interDefaults!.string(forKey: "ident-identities"){
            let formattedNumbers = numbers.characters.split{$0 == "*"}.map(String.init)
            let formattedIdent = identities.characters.split{$0 == "*"}.map(String.init)
            return (formattedNumbers, formattedIdent)
        }
    }
    return ([""], [""])

}

When i try to relaod the extension it fails with error : Error Domain=com.apple.CallKit.error.calldirectorymanager Code=3 "(null)"

with some testing i figured out that by replacing the formattedIdent with an array of 1 element EXP: ["Spamm Caller"] the extension works perfectly and shows no error but when i use an array with more than one element the same error shows up. im i doing something wrong ?? thanks in advance

Answer 1

I had similar issue but the mistake I did was with error code 4. So I digged in the CXErrors and found this enum.

public enum Code : Int {


        public typealias _ErrorType = CXErrorCodeCallDirectoryManagerError

        case unknown

        case noExtensionFound

        case loadingInterrupted

        case entriesOutOfOrder

        case duplicateEntries

        case maximumEntriesExceeded

        case extensionDisabled

        @available(iOS 10.3, *)
        case currentlyLoading

        @available(iOS 11.0, *)
        case unexpectedIncrementalRemoval
    }

So basically unknown == Code 0 and the other options increment with one. This is the full list of errors you can receive while your extension tries to handle new data up to this date.

Answer 2

The error codes from CallDirectory are defined in the header <CallKit/CXError.h>, which includes:

    CXErrorCodeCallDirectoryManagerErrorEntriesOutOfOrder = 3,

This particular error is returned when the phone number(s) provided are out of order. Numbers must be provided in numerically ascending order.