weak may only be applied to class and class-bound protocol types not <<errortype>>

Question

I'm trying to add a map using GMSMapView but I'm getting errors when I create an outlet for the view.

The following is the code snippet:

import UIKit
import GoogleMaps

class MapViewController: UIViewController {

    @IBOutlet weak var mapVIew: GMSMapView!
    @IBOutlet weak var mapCenterPinImage: UIImageView!
    @IBOutlet weak var pinImageVerticalConstraint: NSLayoutConstraint!
    var searchedTypes = ["bakery", "bar", "cafe", "grocery_or_supermarket", "restaurant"]
    let locationManager = CLLocationManager()

    override func viewDidLoad() {
        super.viewDidLoad()
        locationManager.delegate = self
        locationManager.requestWhenInUseAuthorization()
    }
    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == "Types Segue" {
            let navigationController = segue.destinationViewController as! UINavigationController
            let controller = navigationController.topViewController as! TypesTableViewController
            controller.selectedTypes = searchedTypes
            controller.delegate = self
        }
    }
}

I'm getting the following errors at line

@IBOutlet weak var mapVIew: GMSMapView!:

weak may only be applied to class and class-bound protocol types not <>
use of undeclared type "GMSMapView"

Please can someone help me out

Have you assign GMSMapView class to that view from story board? — Jigar Tarsariya
@PersianBlue so basically the original question is now answered. Neither the title of the question, nor it's contents (excepting the code) correspond to your current issue. Please update. — Cristik

Inn0vative1 Inn0vative1 · Accepted Answer · 2016-09-22T19:17:21

The marked answer is not the correct answer to this problem. In case anyone else hits this, the problem is the framework needed is not imported. In this case GoogleMaps. The fix for this is, at the top of file add

import GoogleMaps

Another example is if you get the error after adding an MkMapView.

@IBOutlet weak var mapView: MKMapView

For this you'll have to import MapKit

import MapKit

weak may only be applied to class and class-bound protocol types not <<errortype>>

4 Answers