How do I set up a for loop with multiple arrays as variables to serve as text in a marker in Swift 2

Question

I have multiple arrays that I want to iterate over and plug in as values later in my code for markers on a map. I have the markers populated but can't figure out how to apply the text marker title and subtitle to the marker associated with the location.

iOS and Swift 2

edit: using Mapbox iOS SDK as well.

How do I write the for loop that will do this?

My code trimmed down so far.

Arrays taken from geojson file:

//place variable to array of strings
var place = [String]()
//result from this array ["park", "playground", "parking"]

//pass variable to array of strings
var pass = [String]()
//result from this array ["True", "False", ""]

I have also done this with latitude and longitude but won't add that here. But I do need to add the for loop for it.

//lat and long is served and then all the r,z points, then another lat, long...need to fix this and it may work...
        for var (i,x) in zip(lat, long) {
            print(i)
            print(x)
            //print(i + ", " + x)

        // String to double conversion
        let lati = NSString(string: i).doubleValue
        let longi = NSString(string: x).doubleValue

        var point = MGLPointAnnotation()
            point.coordinate = CLLocationCoordinate2D(latitude: lati, longitude: longi)

            let r = place
            print(r)
            point.title = r
            print(r)

            let z = pass
            print(z)
            point.subtitle = z

        mapView.addAnnotation(point)
        }

So the markers are all added correctly to the map based on lat and long. The marker text however is only added once, and uses the last record served. I am betting I am missing something simple here, as I am newish to coding with Swift 2.

I am receiving this error message "Cannot assign value of type '[String]' to type 'String?'" associated with this line "point.title = r" and this line "point.subtitle = z" which complicates things.

Any suggestions will be greatly appreciated.

If you need more information I can edit as needed but hopefully you have everything you need to help me set up this for loop.

Ishmeet Ishmeet · Accepted Answer · 2016-07-08T03:31:38

What is the data type of title and subtitle in point.title and point.subtitle respectively? You are assigning a String Array place to r. Whereas, point.title is not an array type. I'm still missing your question on where do you want to add the loop?

How do I set up a for loop with multiple arrays as variables to serve as text in a marker in Swift 2

1 Answers