react-native-geolocation VS react-native-maps

Then watchPosition from @react-native-community/geolocation is definitely the way to go. Here's a link to the example in their repo. This will constantly update the position state variable, which you can then send to a realtime service which other users are subscribed to and consuming. (Depending on your implementation, could be a websocket or some pub/sub service... I've worked with Pusher Channels before for something similar.)

I like this one https://github.com/michalchudziak/react-native-geolocation

For location, you can use the [geolocation library](https://github.com/michalchudziak/react-native-geolocation). If for some reason the user blocks this permission, a neat little trick is to call this API, [https://ipapi.co/json/\]([https://ipapi.co/json/](https://ipapi.co/json/)). They will get the users Longitude and Latitude based on the requesting IP. Of course, that will be masked if they have a VPN running. But it is a second attempt at getting a location.

You can just use react-native-geolocation and it's watchPosition method to just listen to location changes and respond to that accordingly. If it comes within 10-15-20-50 meters from the college you can count that as arrival.

Here's some APIs to look into, maybe you could do searches based on libraries https://github.com/michalchudziak/react-native-geolocation

@react-native-community/geolocation

6. React Native Maps – Location-Based Features Made Easy 🗺️

Set up Google Maps: Follow the React Native Maps setup guide to configure Google Maps for your app.

We are using the code below. And we use https://github.com/react-native-maps/react-native-maps for Maps

Now for the fun part - understanding the relevant MapView props! When reading the full MapView documentation you can see the MANY props but we will only need the following:

Are you using react-native-maps own polygons? There is a “polygon creator” example on their github: https://github.com/react-native-maps/react-native-maps/blob/master/example/src/examples/PolygonCreator.tsx

And their docsdont seem to include any draw/edit functions.

Plus google isn’t going to charge you for the google maps mobile sdk. Discussed here https://github.com/react-native-maps/react-native-maps/discussions/4278

react-native-maps offers map components for your Android or iOS application. The kit offers different types of component API such as MapView, Marker, Callout, Polygon, Polyline, Circle, and Overlay.