A simple delegate based objective-C GeoJSON parser with some useful tools. GeoParse acts as a layer over NSJSONSerialization to get the root JSON object, which is then parsed into it's corresponding GeoJSON type, in strict accordance with the GeoJSON format specification
- Link the CoreLocation and MapKit framework to your project. (Used for data types.)
- Import GSNParser.h and set an object to adhere to GSNParserDelegate protocol.
- Create a GSNParser object and set it's delegate.
- Implement -didParseGeoJSONObject:
-(void)didParseGeoJSONObject:(id)object
{
if ([object isKindOfClass:[GSNFeatureCollection class]]) {
GSNFeatureCollection *collection = (GSNFeatureCollection *)object;
for (GSNFeature *feature in collection.featureObjects) {
NSLog(@"%@",feature.name);
}
}GeoJSON formats for
- Bounding Boxes: [ low (longitude), low (latitude), high (longitude), high (latitude) ]
- Coordinates: ( longitude, latitude )
GeoParse contains a very useful category on NSArray(NSArray+Coordinate2D).
- It allows for easy conversions to CLLocationCoordinate2D, from an NSArray of coordinates parsed from NSJSONSerialization.
- If the NSArray is a bbox as specified above, you can find it's center, as well as check if it contains a point.
GeoParse allows conversion of geometry objects(only Points, LineStrings, Polygons and MultiPolygons for now) to their corresponding MKOverlay types, by calling the -shapeForMapKit method on them. GSNFeature now conforms to the MKAnnotation protocol and can be simply dropped onto a MKMapView.
##License## See included LICENSE file.