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April 11, 2023 15:46
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/** | |
* Manages all location related tasks for the app. | |
*/ | |
//A callback for receiving notifications from the FusedLocationProviderClient. | |
lateinit var locationCallback: LocationCallback | |
//The main entry point for interacting with the Fused Location Provider | |
lateinit var locationProvider: FusedLocationProviderClient | |
@SuppressLint("MissingPermission") | |
@Composable | |
fun getUserLocation(context: Context): LatandLong { | |
// The Fused Location Provider provides access to location APIs. | |
locationProvider = LocationServices.getFusedLocationProviderClient(context) | |
var currentUserLocation by remember { mutableStateOf(LatandLong()) } | |
DisposableEffect(key1 = locationProvider) { | |
locationCallback = object : LocationCallback() { | |
override fun onLocationResult(result: LocationResult) { | |
/** | |
* Option 1 | |
* This option returns the locations computed, ordered from oldest to newest. | |
* */ | |
for (location in result.locations) { | |
// Update data class with location data | |
currentUserLocation = LatandLong(location.latitude, location.longitude) | |
Log.d(LOCATION_TAG, "${location.latitude},${location.longitude}") | |
} | |
/** | |
* Option 2 | |
* This option returns the most recent historical location currently available. | |
* Will return null if no historical location is available | |
* */ | |
locationProvider.lastLocation | |
.addOnSuccessListener { location -> | |
location?.let { | |
val lat = location.latitude | |
val long = location.longitude | |
// Update data class with location data | |
currentUserLocation = LatandLong(latitude = lat, longitude = long) | |
} | |
} | |
.addOnFailureListener { | |
Log.e("Location_error", "${it.message}") | |
} | |
} | |
} | |
if (hasPermissions( | |
context, | |
Manifest.permission.ACCESS_FINE_LOCATION, | |
Manifest.permission.ACCESS_COARSE_LOCATION | |
) | |
) { | |
locationUpdate() | |
} else { | |
askPermissions( | |
context, REQUEST_LOCATION_PERMISSION, Manifest.permission.ACCESS_FINE_LOCATION, | |
Manifest.permission.ACCESS_COARSE_LOCATION | |
) | |
} | |
onDispose { | |
stopLocationUpdate() | |
} | |
} | |
// | |
return currentUserLocation | |
} | |
fun stopLocationUpdate() { | |
try { | |
//Removes all location updates for the given callback. | |
val removeTask = locationProvider.removeLocationUpdates(locationCallback) | |
removeTask.addOnCompleteListener { task -> | |
if (task.isSuccessful) { | |
Log.d(LOCATION_TAG, "Location Callback removed.") | |
} else { | |
Log.d(LOCATION_TAG, "Failed to remove Location Callback.") | |
} | |
} | |
} catch (se: SecurityException) { | |
Log.e(LOCATION_TAG, "Failed to remove Location Callback.. $se") | |
} | |
} | |
@SuppressLint("MissingPermission") | |
fun locationUpdate() { | |
locationCallback.let { | |
//An encapsulation of various parameters for requesting | |
// location through FusedLocationProviderClient. | |
val locationRequest: LocationRequest = | |
LocationRequest.create().apply { | |
interval = TimeUnit.SECONDS.toMillis(60) | |
fastestInterval = TimeUnit.SECONDS.toMillis(30) | |
maxWaitTime = TimeUnit.MINUTES.toMillis(2) | |
priority = LocationRequest.PRIORITY_HIGH_ACCURACY | |
} | |
//use FusedLocationProviderClient to request location update | |
locationProvider.requestLocationUpdates( | |
locationRequest, | |
it, | |
Looper.getMainLooper() | |
) | |
} | |
} | |
data class LatandLong( | |
val latitude: Double = 0.0, | |
val longitude: Double = 0.0 | |
) | |
fun getReadableLocation(latitude: Double, longitude: Double, context: Context): String { | |
var addressText = "" | |
val geocoder = Geocoder(context, Locale.getDefault()) | |
try { | |
val addresses = geocoder.getFromLocation(latitude, longitude, 1) | |
if (addresses?.isNotEmpty() == true) { | |
val address = addresses[0] | |
addressText = "${address.getAddressLine(0)}, ${address.locality}" | |
// Use the addressText in your app | |
Log.d("geolocation", addressText) | |
} | |
} catch (e: IOException) { | |
Log.d("geolocation", e.message.toString()) | |
} | |
return addressText | |
} |
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