Is there a way to get directions(just routes) using google for mkmapview?

Question

I\'m using swift on iOS and using MKMapView. I\'ve been working on giving a user a from - to textfield and letting the user have a form of route between the from and to loca

Answer 1

Swift 3 version, slightly condensed, thanks to ztan.

If you want to use Googles geo polylines in iOS without Google SDK.

func polyLineWithEncodedString(encodedString: String) -> [CLLocationCoordinate2D] {
    var myRoutePoints=[CLLocationCoordinate2D]()
    let bytes = (encodedString as NSString).utf8String
    var idx: Int = 0
    var latitude: Double = 0
    var longitude: Double = 0
    while (idx < encodedString.lengthOfBytes(using: String.Encoding.utf8)) {
        var byte = 0
        var res = 0
        var shift = 0
        repeat {
            byte = bytes![idx] - 63
            idx += 1
            res |= (byte & 0x1F) << shift
            shift += 5
        } while (byte >= 0x20)
        let deltaLat = ((res & 1) != 0x0 ? ~(res >> 1) : (res >> 1))
        latitude += Double(deltaLat)

        shift = 0
        res = 0
        repeat {
            byte = bytes![idx] - 63
            idx += 1
            res |= (byte & 0x1F) << shift
            shift += 5
        } while (byte >= 0x20)
        let deltaLon = ((res & 1) != 0x0 ? ~(res >> 1) : (res >> 1))
        longitude += Double(deltaLon)

        myRoutePoints.append(CLLocation(latitude: Double(latitude * 1E-5), longitude: Double(longitude * 1E-5)).coordinate)
    }
    return myRoutePoints
}