set individual information to each custom marker

Question

Created Dec ’20

Replies 2

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Participants 3

Hi community,

I have a problem with an array of MKAnnotationViews that are customized, in which I want to display the information for each marker individually, such as its title or its description that contains that marker, I don't know if it opens any way to do it.

I leave my code below:

func setUpAllThePins(allLogos:[String],allLongitudesAndLatitudes:[CLLocationCoordinate2D],kmDouble:[Double],streets:[String],alcaldia:[String],calificacion:[Int],titulos:[String]){





imagenes = allLogos.compactMap{ link->UIImage? in

guard let url = URL(string: link) else {return nil}

guard let imageData = try? Data(contentsOf: url) else {return nil}

return UIImage(data: imageData)

   }

let annotations = zip(allLongitudesAndLatitudes, imagenes)

.map { (coordinate, allLogos) -> myAnnotation in

let annotation = myAnnotation(title: "", subtitle: "", coordinate: coordinate, localImage: allLogos)

return annotation

}



if let oldArray = annotations as? [MKAnnotation]{

for i in oldArray{

mapView.addAnnotation(i)

}

}



}

Boost

Answer 1

OOPer OP

Dec ’20

I want to ask you a few things:

Please use the Code block feature of this site (shown as < >)
What is myAnnotation? Is it a type? In Swift, type names should start with Capital letter
How are you adding MKAnnotations to your MKMapView?
How are you creating MKAnnotationView from MKAnnotation?

0

Answer 2

Claude31 OP

Dec ’20

Code will be easier to analyse when formatted and pasted as Paste and Match Style and without useless blank lines

Code Block func setUpAllThePins(allLogos:[String], allLongitudesAndLatitudes:[CLLocationCoordinate2D], kmDouble:[Double], streets:[String], alcaldia:[String], calificacion:[Int], titulos:[String]) {
    
    imagenes = allLogos.compactMap { link->UIImage? in
        guard let url = URL(string: link) else {return nil }
        guard let imageData = try? Data(contentsOf: url) else {return nil }
        return UIImage(data: imageData)
    }
    
    let annotations = zip(allLongitudesAndLatitudes, imagenes)
        .map { (coordinate, allLogos) -> myAnnotation in
            let annotation = myAnnotation(title: "", subtitle: "", coordinate: coordinate, localImage: allLogos)
            return annotation
        }
    
    if let oldArray = annotations as? [MKAnnotation] {
        for i in oldArray{
            mapView.addAnnotation(i)
        }
        
    }
    
}

I have a problem with an array of MKAnnotationViews that are customized, in which I want to display the information for each marker individually, such as its title or its description that contains that marker, I don't know if it opens any way to do it.

What is exactly the problem ?
What is the information you want to display ? titles ?
you pass nothing in annotation on line 11. Why ?
What should be title and subtitle ?

0