Map Demo App

An iOS showcase application for GeoJSON map data and clustering

Demo

Requirements

Swift 5.0, iOS deployment target: 12.2.

Cocoapods 1.6.1.

Setup

Installed pods are included in the repository. Project runs out of the box. In case of manual pods installation, run:

pod repo update
pod install

Covering notes

Implemented features

• Tabbar controller UI
• GeoJSON deserialization
• Fetch and display electric recharging stations as pins on map
• Fetch and display parkings as tracks on map
• Cache GeoJSON on disk
• Clustering
• Filtering by object type with switches on map
• List of objects displayed on map
• Detailed map view for object selection in list

Omitted features

Faced an API issue while working with geodata endpoint on apidata.mos.ru. The API fails to return legit objects set for valid boundary box. In case of absent or incorrect bbox parameter, it will return all existing objects. In case of valid boundary box, which probably include a small subset of all objects, the API returns 413 error, which means objects count 10000 exceeding. Examples with bbox param provided by document also fail with 413. Corresponding postman examples, provided by docs, also fail.
This condition makes it impossible to implement such things as paging, request throttling, request by displayed area, optimize requests by indexing area.

• Request throttling
• Request pagination by bbox
• Loading data only for map's displayed area by bbox
• Caching object models to Realm - GeoJSON saved to disk instead
• Optimize object requests by indexing areas