Imagine an app very similar to Tinder, match users with similar interests, but only in a certain radius.
I guess similar question to this, but specifically for Flutter: How to implement a tinder-like search based on distance in Android?
The most basic idea is to just save each user's lat & long in Firestore upon app start. Then query the first e.g. 10 users from db and calculate the distance between them with something like this.
Is this all I need? I suppose I won't need something big like geoflutterfire with map visualization and whatnot. All I need is the location of each user.
So my questions are:
- Is geolocator the best plugin for this? Or is there something specifically suited?
- Is this a feasible solution for a big amount of users?
I'm worried that calculating the distance in this way will become impossible, since the app will be loading for minutes.
Or maybe I have to lean into geohashing? But that would mean I have to use geoflutterfire, am I then bound by the API calls restriction of Google Maps?
Edit: Seeing this question: Flutter Firestore Geo query, it seems like Firestore may be a bad solution for this?
Am I forced to migrate to something like Back4App which has things like withinGeoBox?
it's also possible to do it with geohashing.
you can do that with https://pub.dev/packages/geohash_plus