ArcGIS for Android 解析Geometry的JSON数据

String str= "{\"rings\":[[[1007664.4779535953,3710553.4649297176],[957962.4793888753,3190110.978805308],[1266114.9310351424,3430468.042044999],[1007664.4779535953,3710553.4649297176]]],\"spatialReference\":{\"wkid\":102100}} ";
		   JsonFactory jsonFactory = new JsonFactory();
		   try {
			JsonParser jsonParser = jsonFactory.createJsonParser(str);
			MapGeometry mapgeo = GeometryEngine.jsonToGeometry(jsonParser);
			Geometry geo =  mapgeo.getGeometry();
		} catch (JsonParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

字符串是通过GeometryEngine的geometryToJson方法生成的。