在Swift中将Parse GeoPoint转换为CLLocation [英] Converting Parse GeoPoint into a CLLocation in Swift

问题描述

我正在Swift中工作.

I am working in Swift.

在我的Parse后端中，我有一个名为location的键，该键具有许多geoPoint值，其中包括纬度和经度点.我想查询/获取所有这些点并将它们放置在数组中，以便随后将它们用作地图上的不同注释.

In my Parse backend I have a key called locations which has a number of geoPoint values of which are latitude and longitude points. I want to query/fetch all these points and place them into an array so I can then use them as different annotations on a map.

我在查询位置时遇到麻烦，因此无法将其用作地图的CLLocation.

I am having trouble querying the locations so that they can be used as a CLLocation for the map.

如果有人可以帮助我做到这一点，将不胜感激.

If anyone could help me do this it would be much appreciated.

推荐答案

您可以将变量创建为PFGeoPoint，并将解析后的数据放入此变量中:

You can create a variable as a PFGeoPoint and you can put your data from parse into this variable:

var descLocation: PFGeoPoint = PFGeoPoint()

var innerP1 = NSPredicate(format: "ObjectID = %@", objectID)
    var innerQ1:PFQuery = PFQuery(className: "Test", predicate: innerP1)

    var query = PFQuery.orQueryWithSubqueries([innerQ1])
    query.addAscendingOrder("createdAt")
    query.findObjectsInBackgroundWithBlock {
        (objects: [AnyObject]!, error: NSError!) -> Void in

        if error == nil {
            for object in objects {
                descLocation = object["GeoPoint"] as PFGeoPoint
            }
        } else {
            println("Error")
        }

    }

在您需要该位置的班级中，只需添加以下行即可:

And in your class where you need the location, just add these line:

    var latitude: CLLocationDegrees = descLocation.latitude
    var longtitude: CLLocationDegrees = descLocation.longitude

    var location: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: latitude, longitude: longtitude)

因此您可以使用以下代码向地图添加注释:

So you can add annotation to your map using this code:

    @IBOutlet var map: MKMapView!
    var annotation = MKPointAnnotation()
    annotation.title = "Test"
    annotation.coordinate = location
    map.addAnnotation(annotation)

这篇关于在Swift中将Parse GeoPoint转换为CLLocation的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！