Maps SDK for iOSAdditional data
Additional data
Allow your users to request a set of extra entities, like a city or country outline, previously retrieved from the Search API service. For more information, refer to the Additional Data service documentation.
Sample use case: You want to apply colors to geographic-boundary areas such as countries, cities, or districts.
Use the following code to try this in your app:
_
func search(_: TTSearch, completedWith response: TTSearchResponse) {
guard let result = response.results.first else {
return
}
guard let additionalData = result.additionalDataSources else {
return
}
guard let geometryData = additionalData.geometryDataSource else {
return
}
let query = TTAdditionalDataSearchQueryBuilder.create(with: geometryData).build()
searchAdditionalData.additionalDataSearch(with: query)
}func additionalDataSearch(_: TTAdditionalDataSearch, completedWith response: TTAdditionalDataSearchResponse) {
progress.hide()
guard let result = response.results.first else {
return
}
let visitor = PolygonAdditionalDataVisitior()
result.visitGeoJSONResult(visitor)
var mapPolygons: [TTPolygon] = []
for lineString in visitor.lineStrings {
let mapPolygon = TTPolygon(coordinatesData: lineString, opacity: 0.7, color: TTColor.Red(), colorOutline: TTColor.Red())
mapPolygons.append(mapPolygon)
mapView.annotationManager.add(mapPolygon)
}
mapView.zoom(toCoordinatesDataCollection: mapPolygons)
}
- (void)search:(TTSearch *)search completedWithResponse:(TTSearchResponse *)response {
TTSearchResult *result = response.results.firstObject;
if (!result) {
return;
}
TTAdditionalDataSources *additionalData = result.additionalDataSources;
if (!additionalData) {
return;
}
TTGeometryDataSource *geometryData = additionalData.geometryDataSource;
if (!geometryData) {
return;
}
TTAdditionalDataSearchQuery *query = [[TTAdditionalDataSearchQueryBuilder createWithDataSource:geometryData] build];
[self.searchAdditionalData additionalDataSearchWithQuery:query];
}
- (void)additionalDataSearch:(TTAdditionalDataSearch *)additionalDataSearch completedWithResponse:(TTAdditionalDataSearchResponse *)response {
[self.progress hide];
TTAdditionalDataSearchResult *result = response.results.firstObject;
if (!result) {
return;
}
PolygonAdditionalDataVisitior *visitor = [PolygonAdditionalDataVisitior new];
[result visitGeoJSONResult:visitor];
NSMutableArray<TTPolygon *> *mapPolygons = [NSMutableArray new];
for (TTGeoJSONLineString *lineString in visitor.lineStrings) {
TTPolygon *mapPolygon = [TTPolygon polygonWithCoordinatesData:lineString opacity:0.7 color:[TTColor Red] colorOutline:[TTColor Red]];
[mapPolygons addObject:mapPolygon];
[self.mapView.annotationManager addOverlay:mapPolygon];
}
[self.mapView zoomToCoordinatesDataCollection:mapPolygons];
}
Sample views utilizing entities retrieved from the Additional Data service:
 Boundaries for Amsterdam |
 Boundaries for Poland |