MGLMapView

gistfile1.swift

class ViewController: UIViewController {    
    var mapView: MGLMapView?
    
    init() {
        super.init(nibName: nil, bundle: nil)
        
        MGLAccountManager.setMapboxMetricsEnabledSettingShownInApp(true)
        mapView = MGLMapView(frame: CGRectNull, accessToken: "FOO")
  
        view.addSubview(mapView!)
        
        initConstraints()
    }

    required init(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    func initConstraints() {
        mapView!.setTranslatesAutoresizingMaskIntoConstraints(false)
        view.addConstraints([
            NSLayoutConstraint(item: mapView!, attribute: .Top, relatedBy: .Equal, toItem: view, attribute: .Top, multiplier: 1, constant: 0),
            NSLayoutConstraint(item: mapView!, attribute: .Bottom, relatedBy: .Equal, toItem: view, attribute: .Bottom, multiplier: 1, constant: 0),
            NSLayoutConstraint(item: mapView!, attribute: .Leading, relatedBy: .Equal, toItem: view, attribute: .Leading, multiplier: 1, constant: 0),
            NSLayoutConstraint(item: mapView!, attribute: .Trailing, relatedBy: .Equal, toItem: view, attribute: .Trailing, multiplier: 1, constant: 0)
        ])
    }
}