Delegate error in swift2

Question

var mapViewDelegate: AnyObject?

init(mapView: AGSMapView, mapViewDelegate: AnyObject) {
    self.mapView = mapView
    self.mapViewDelegate = mapViewDelegate
    super.init()
}

mapView?.touchDelegate = mapViewDelegate
mapView?.layerDelegate = mapViewDelegate

then:

Cannot assign value of type 'AnyObject?' to type 'AGSMapViewTouchDelegate!'

What can I do?And thank you for all the answer

Answer 1

var mapViewDelegate: AnyObject? 

It should not be like this.

It should be of belonging type of the Protocol. Not Anyobject.

Like i have a protocol named AllowNotificationDelegate. So my delegated variable is defined as

weak var allowNotificationDelegate: AllowNotificationDelegate?

type of AllowNotificationDelegate.

so you should write

weak var mapViewDelegate: AGSMapViewTouchDelegate?