AI-generated Key Takeaways
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This documentation explains how to style the fill and stroke of boundary polygons using a styling closure that takes a
GMSPlaceFeatureand returns aGMSFeatureStyle. -
The styling closure defines the style attributes for the polygon, such as fill color, stroke color, and stroke width.
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Styling Places data might require integrating the Places SDK for iOS, although it's not always mandatory.
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Code examples in Swift and Objective-C demonstrate how to apply a purple style to a specific boundary polygon using its place ID.
To style the fill and stroke for a boundary polygon, use a styling closure that
accepts a GMSPlaceFeature
and returns a GMSFeatureStyle
to define style attributes. Then set the
style property to a styling closure, which contains styling logic.
Swift
let mapView = GMSMapView ( frame : . zero , mapID : GMSMapID ( identifier : "YOUR_MAP_ID" ), camera : GMSCameraPosition ( latitude : 20.773 , longitude : - 156.01 , zoom : 12 )) let layer = mapView . featureLayer ( of : . locality ) // Define a style with purple let style = FeatureStyle ( fill : . purple . withAlphaComponent ( 0.5 ), stroke : . purple , strokeWidth : 3.0 ) // Apply the style to a single boundary. layer . style = { ( $0 . placeID == "ChIJ0zQtYiWsVHkRk8lRoB1RNPo" /* Hana, HI */ ) ? style : nil }
Objective-C
GMSMapView * mapView = [ GMSMapView mapWithFrame : CGRectZero mapID : [ GMSMapID mapIDWithIdentifier : @"MAP_ID" ] camera : [ GMSCameraPosition cameraWithLatitude : 20.773 longitude : -156.01 zoom : 12 ]]; GMSFeatureLayer<GMSPlaceFeature * > * layer = [ mapView featureLayerOfFeatureType : GMSFeatureTypeLocality ]; // Define a style with purple fill and border. GMSFeatureStyle * style = [ GMSFeatureStyle styleWithFillColor : [[ UIColor purpleColor ] colorWithAlphaComponent : 0.5 ] strokeColor : [ UIColor purpleColor ] strokeWidth : 3.0 ]; // Apply the style to a single boundary. layer . style = ^ ( GMSPlaceFeature * feature ) { return [ feature . placeID isEqual : @"ChIJ0zQtYiWsVHkRk8lRoB1RNPo" /* Hana, HI */ ] ? style : nil ; };
