set user location with GeoFire in Xcode 10 - firebase-realtime-database

Question

My coding (as you will see) and familiarity with Xcode and Swift is basic, but I'm learning... I realize my nesting of the code isn't the greatest, if good at all. I am trying to integrate GeoFire within my Xcode 10 app. I have looked for a clear explanation, but I am still yet to find an answer. I have a registrationForm to register users. The initial Firebase setup was straightforward, and I have a fully functional form that registers the user in Firebase. Now I am trying to add GeoFire in order to track the user's location.
I have tried a bunch of approaches from YouTube videos and websites, none of which work.
import UIKit
import Foundation
import CoreLocation
import Firebase
import GeoFire
class SecondViewController: UIViewController {
//Firebase DB ref
var refDriver: DatabaseReference!
#IBOutlet weak var name: UITextField!
#IBOutlet weak var employeenumber: UITextField!
#IBOutlet weak var label: UILabel!
#IBAction func submit(_ sender: UIButton) {
addDriver()
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
//configuring firebase and ensures no error is returned
if(FirebaseApp.app() == nil){
FirebaseApp.configure()
}
//getting a reference to the node driver
refDriver = Database.database().reference().child("driver");
}
func addDriver(){
//generating a new key inside driver node
//and also getting the generated key
let key = refDriver.childByAutoId().key
//creating driver with the given values
let driver = ["id":key,
"name": name.text! as String,
"employeenumber": employeenumber.text! as String
]
//adding the driver to Firebase
refDriver.child(key!).setValue(driver)
//displaying submit message
label.text = "You are registered."
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}

Answer 1

hey try importing the module after you install the pod
import GeoFire
**var geoFire: GeoFire?**
var myQuery: GFQuery?
in viewdidLoad() function call the setupGeofire()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
setupGeoFire()
}
func setupGeoFire() {
let geoFireRef = Database.database().reference().child("user_locations")
let geoFire = GeoFire(firebaseRef: geoFireRef)
self.geoFire = geoFire
loadUsersWithin(radius: 100)
}
in setupGeoFire i made a var geoFireRef this is just the node you want to save your users location info
let geoFireRef = Database.database().reference().child("user_locations")
then we make the geoFire object by passing in that node location, our geoFireRef var
then just making the geoFire object accessible everywhere using
``` self.geoFire = geoFire`` `
if you want to get users in a specific radius (km) you can check the func below too
func loadUsersWithin(radius: Double){
guard let uid = Auth.auth().currentUser?.uid else{return}
geoFire?.getLocationForKey(uid, withCallback: { (userLocation, err) in
guard let userLocation = userLocation else{return}
self.myQuery = self.geoFire?.query(at: userLocation, withRadius: radius)
self.myQuery?.observe(.keyEntered, with: { (key, location) in
if key == uid{
return
}
Database.database().reference().child("users").child(key).observeSingleEvent(of: .value, with: { (snapshot) in
guard let userDictionary = snapshot.value as? [String:Any] else{return}
let user = User(uid: key, dictionary: userDictionary)
self.user = user
self.usersArray.append(user)
self.nearbyCV.reloadData()
}, withCancel: { (err) in
print(err)
})
})
})
}
}
Here is my User.swift Data Model
import UIKit
class User{
var name: String
var userImgUrlString: String
var age: String
var uid: String
var aboutMeText:String
init(uid: String,dictionary: [String: Any]) {
self.name = dictionary["username"] as? String ?? ""
self.userImgUrlString = dictionary["profileImageUrlString"] as? String ?? ""
self.aboutMeText = dictionary["aboutMe"] as? String ?? ""
self.uid = uid
self.age = dictionary["age"] as? String ?? ""
}
}```
hope this helps yo it was hard to find info for me too when i just started but it gets better