Skip to main content

​
Overview

The LocationRepository class provides access to the device’s location using Google Play Services Fused Location Provider. It handles permission checks and retrieves both last known and current location.

​
Class Definition

class LocationRepository(private val context: Context)
​
context
Context
required
Android Context used for checking permissions and accessing location services

​
Methods

​
hasPermission

Checks if the app has location permissions. 
fun hasPermission(): Boolean
​
Boolean
Boolean
Returns true if either ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION permission is granted
Example: 
val locationRepository = LocationRepository(context)
if (locationRepository.hasPermission()) {
    // Proceed with location access
} else {
    // Request location permissions
}
The method checks for both ACCESS_FINE_LOCATION and ACCESS_COARSE_LOCATION permissions. If either is granted, it returns true.

​
getLatLng

Retrieves the device’s current latitude and longitude coordinates. 
suspend fun getLatLng(): Pair<Double, Double>
​
Pair<Double, Double>
Pair<Double, Double>
A pair containing latitude and longitude coordinates
Example: 
val locationRepository = LocationRepository(context)
try {
    val (latitude, longitude) = locationRepository.getLatLng()
    println("Location: $latitude, $longitude")
} catch (e: IllegalStateException) {
    // Handle location error
    println("Error: ${e.message}")
}

​
Location Retrieval Strategy

The getLatLng method attempts to get location in the following order:
  1. Last Known Location: First tries to retrieve the last known location from cache
  2. Current Location: If no cached location exists, requests a fresh high-accuracy location
  3. Error Handling: Throws descriptive errors if location is unavailable
// Priority settings
Priority.PRIORITY_HIGH_ACCURACY // Used for current location requests

​
Error Handling

The method throws IllegalStateException with descriptive messages in the following cases:
​
SecurityException
IllegalStateException
Message: “Permiso de ubicación no concedido.” (Location permission not granted)Thrown when location permissions have not been granted
​
Location Unavailable
IllegalStateException
Message: “Ubicación no disponible (GPS apagado o sin señal).” (Location unavailable - GPS off or no signal)Thrown when neither last location nor current location could be retrieved
​
Generic Error
IllegalStateException
Message: “Error obteniendo ubicación: error message” (Error getting location)Thrown for any other errors during location retrieval
Example with error handling: 
val locationRepository = LocationRepository(context)

if (!locationRepository.hasPermission()) {
    // Request permissions first
    requestLocationPermissions()
    return
}

try {
    val (lat, lng) = locationRepository.getLatLng()
    // Use coordinates
    displayLocationOnMap(lat, lng)
} catch (e: IllegalStateException) {
    when {
        e.message?.contains("Permiso") == true -> {
            // Permission denied
            showPermissionError()
        }
        e.message?.contains("GPS") == true -> {
            // GPS disabled or no signal
            showGpsError()
        }
        else -> {
            // Other error
            showGenericError(e.message)
        }
    }
}

​
Required Permissions

Add at least one of these permissions to your AndroidManifest.xml: 
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

​
Dependencies

This repository requires Google Play Services Location: 
implementation 'com.google.android.gms:play-services-location:latest_version'

​
Source Location

com.demodogo.ev_sum_2.data.repositories.LocationRepository

Build docs developers (and LLMs) love

Get started for freeTalk to us