How to share my current location to UIActivityViewController?

Question

I know i can add things like text, URL, images to UIActivityViewController , but how to add my current location with a thumbnail of my location like in the tweet shown below

Answer 1

Solution using Swift 4.2 and CNContactVCardSerialization

 func vCardFilePath(from placemark: CLPlacemark) -> String? {
        let cnAddress = CNMutablePostalAddress()
        cnAddress.city = placemark.locality ?? ""
        cnAddress.country = placemark.country ?? ""
        cnAddress.postalCode = placemark.postalCode ?? ""
        cnAddress.isoCountryCode = placemark.isoCountryCode ?? ""
        cnAddress.state = placemark.administrativeArea ?? ""
        cnAddress.street = placemark.thoroughfare ?? ""
        let labelledAddress = CNLabeledValue(label: CNLabelOther, value: cnAddress)

        let abPerson = CNMutableContact()
        abPerson.givenName = locationName ?? ""
        abPerson.postalAddresses = [labelledAddress]

        if let coords = position?.coordinate,
            let loc = locationName?.addingPercentEncoding(withAllowedCharacters: .whitespacesAndNewlines) {
            let url = "https://maps.apple.com/?ll=\(coords.latitude),\(coords.longitude)&q=\(loc)" as NSString
            let urlAddress = CNLabeledValue(label: CNLabelHome, value: url)
            abPerson.urlAddresses = [urlAddress]
        }

        guard let vCards = try? CNContactVCardSerialization.data(with: [abPerson]) else {
            print("Couldn't extract vCards data")
            return nil
        }
        let vCardString = String(data: vCards, encoding: .utf8)

        //Store the vCard file
        let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
        let documentsDirectory = paths[0]
        let filePath = "\(documentsDirectory)/shareLocation.vcf"

        do {
            try vCardString?.write(toFile: filePath, atomically: false, encoding: .utf8)
        } catch _ {
            print("Couldn't write location .vcf file")
            return nil
        }
        return filePath
    }