I am trying to use Geoquery to find the other closest users in my radius. In my app I have a button that when pressed calls a function named findClosestCars which uses geoQuery to the closest users in my radius. In order to use Geoquery I need to grab my latitide and longitude. To do this I am storing the latitude and longitude in double type variables named latitude and longitude. The latitude and longitude is getting grabbed by a location object named currentlocation like this latitude=currentLocation.getLatitude(),longitude=currentLocation.getLongitude(). Instead of using fusedlocation I am trying to get the current location to populate the object currentLocation. Below is my code for findClosestCars
private void findClosestCars() {
latitude=currentLocation.getLatitude();
longitude=currentLocation.getLongitude();
databaseReference = FirebaseDatabase.getInstance().getReference("Lenders");
GeoFire geoFire = new GeoFire(databaseReference);
GeoQuery geoQuery = geoFire.queryAtLocation(new GeoLocation(latitude, longitude), radius);
geoQuery.removeAllListeners();
geoQuery.addGeoQueryEventListener(new GeoQueryEventListener() {
#Override
public void onKeyEntered(String key, GeoLocation location) {
if (!driverFound) {
driverFound = true;
driverFoundID = key;
closestLender = FirebaseDatabase.getInstance().getReference("Users").child("Lenders").child(driverFoundID);
;
showPictureAndPrice();
}
radius++;
}
#Override
public void onKeyExited(String key) {
}
#Override
public void onKeyMoved(String key, GeoLocation location) {
}
#Override
public void onGeoQueryReady() {
if (!driverFound) {
radius++;
}
}
#Override
public void onGeoQueryError(DatabaseError error) {
}
});
}
Below is the code to grab the current location and put it in the variable currentLocation
#Override
public void onLocationChanged(#NonNull Location location) {
currentLocation=location;
}
protected synchronized void builGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
#Override
public void onConnected(#Nullable Bundle bundle) {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, (com.google.android.gms.location.LocationListener) this);
}
You're checking permissions, but not requesting them if you don't already have them. You need to do that.
I can't find the current location, always find my last location.
I have to change what.
Please help.
My project homework for school
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gpstxt = (TextView) findViewById(R.id.txtgps);
buttonGPS = (Button) findViewById(R.id.gpsbtn);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
final Location location = locationManager.getLastKnownLocation(locationManager.NETWORK_PROVIDER);
buttonGPS.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onLocationChanged(location);
}
});
}
private void onLocationChanged(Location location) {
double longtitude = location.getLongitude();
double latitude = location.getLatitude();
gpstxt.setText("Enlem:" + latitude + "\n" + "Boylam:" + longtitude);
}
}
Not the last location output.
I want to find the current location using gps.
You should not be using locationManager.getLastKnownLocation()
Rather you should subscribe to location updates.
You can check this out for more details on the implementation.
https://developer.android.com/training/location/receive-location-updates
You seem to be using the getLastKnownLocation() method which provides you with the last known location of the user.
Instead, you should be using the requestLocationUpdates() method present in the locationManager package.
Something like this should work :
// Acquire a reference to the system Location Manager
LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
// Define a listener that responds to location updates
LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
// Called when a new location is found by the network location provider.
makeUseOfNewLocation(location);
}
public void onStatusChanged(String provider, int status, Bundle extras) {}
public void onProviderEnabled(String provider) {}
public void onProviderDisabled(String provider) {}
};
// Register the listener with the Location Manager to receive location updates
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
Reference : https://developer.android.com/guide/topics/location/strategies.html
I'm trying to get the user's current location for my weather application but i get the location of some "US" area. I've tried multiples tutorials but failed to get the correct current location.
It returns me:
latitude: 37.421998333333335
longitude: -122.08400000000002
The location is "Mountain View,CA,US"
The code I've used is below:
GpsTracker.java
public class GpsTracker implements LocationListener {
Context context;
public GpsTracker(Context c)
{
context = c;
}
public Location getLocation()
{
if(ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED){
Toast.makeText(context,"Permission not granted",Toast.LENGTH_SHORT).show();
return null;
}
LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
boolean isGpsEnabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
if(isGpsEnabled)
{
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,this);
Location l = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
return l;
}
else{
Toast.makeText(context,"Enable GPS",Toast.LENGTH_SHORT).show();
}
return null;
}
#Override
public void onLocationChanged(Location location) {
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
}
In my main class I'm getting the location like this:
public void getLocation()
{
gpsTracker = new GpsTracker(getApplicationContext());
Location l = gpsTracker.getLocation();
if(l != null)
{
lat = l.getLatitude();
lon = l.getLongitude();
}
Log.d("User's location","Latitude"+lat);
Log.d("User's location","Longitude"+lon);
}
The Location that you need is returned in the method onLocationChanged.
So you could assign it to a variable and then return it:
private Location lastLocation;
#Override
public void onLocationChanged(Location location) {
lastLocation = location;
}
public Location getLastLocation() {
return lastLocation;
}
Call requestLocationUpdates in the onCreate of your activity and then call getLastLocation when you need to show it.
Or you can implement a callback to notify the activity when the location changes.
You are probably getting the last known location and using that tool is probably handing back this address. Consider using a better tool or just FusedLocationProviderClient. However, I like SmartLocation library personally.
https://github.com/mrmans0n/smart-location-lib
It gives fallback providers in the event of one unavailable. There is a little learning curve to use the library, but once you implement it, it works nicely.
I have an issue, I need to get the latitude and longitude of one specific moment like taking a picture. I get the Double values, the problem is that they're always 0. I receive no exceptions, and the coordinates are uploaded successfully to Firebase Database, but when I check them in the JSON, they are always zero (I took like 20 pictures).
This is my sections code of "location" stuffs and the uploading to Firebase Database.
My Main Activity is like this.
public class MainActivity extends AppCompatActivity implements LocationListener
Global variables related to Location
double latitude;
double longitude;
This goes inside onCreate():
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
String networkProvider = LocationManager.NETWORK_PROVIDER;
String gpsProvider = LocationManager.GPS_PROVIDER;
final Location location= new Location(networkProvider);
onLocationChanged(location);{
latitude=location.getLatitude();
longitude=location.getLongitude();
}
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
locationManager.requestLocationUpdates(gpsProvider, 5000, 10, this);
This goes in a button onClickListener(), also inside onCreate() method.
//Insert coordinates to JSON Firebase database...
Coordinates coordinates = new Coordinates();
coordinates.setLatitude(location.getLatitude());
coordinates.setLongitude(location.getLongitude());
testReference.push().setValue(coordinates);
Toast.makeText(MainActivity.this, "Coordinates uploaded!", Toast.LENGTH_LONG).show();
Also I have these methods inside MainActivity:
#Override
public void onLocationChanged(Location location) {
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
Try this:
locationManager = (LocationManager) getApplicationContext()
.getSystemService(Context.LOCATION_SERVICE);
Criteria locationCritera = new Criteria();
String providerName = locationManager.getBestProvider(locationCritera,
true);
if(providerName!=null)
location = locationManager.getLastKnownLocation(providerName);
locationListener = new MyLocationListener();
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
0, locationListener);
and Implement Your Location Listener class:
private class MyLocationListener implements LocationListener {
public void onLocationChanged(Location loc) {
if (loc != null) {
location = loc;
latitude=location.getLatitude();
longitude=location.getLongitude();
}
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}
check null value for getLastKnownLocation() method..
How do I get the current Latitude and Longitude of the mobile device in android using location tools?
Use the LocationManager.
LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
double longitude = location.getLongitude();
double latitude = location.getLatitude();
The call to getLastKnownLocation() doesn't block - which means it will return null if no position is currently available - so you probably want to have a look at passing a LocationListener to the requestLocationUpdates() method instead, which will give you asynchronous updates of your location.
private final LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
longitude = location.getLongitude();
latitude = location.getLatitude();
}
}
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 10, locationListener);
You'll need to give your application the ACCESS_FINE_LOCATION permission if you want to use GPS.
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
You may also want to add the ACCESS_COARSE_LOCATION permission for when GPS isn't available and select your location provider with the getBestProvider() method.
Here is the class LocationFinder to find the GPS location. This class will call MyLocation, which will do the business.
LocationFinder
public class LocationFinder extends Activity {
int increment = 4;
MyLocation myLocation = new MyLocation();
// private ProgressDialog dialog;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.intermediat);
myLocation.getLocation(getApplicationContext(), locationResult);
boolean r = myLocation.getLocation(getApplicationContext(),
locationResult);
startActivity(new Intent(LocationFinder.this,
// Nearbyhotelfinder.class));
GPSMyListView.class));
finish();
}
public LocationResult locationResult = new LocationResult() {
#Override
public void gotLocation(Location location) {
// TODO Auto-generated method stub
double Longitude = location.getLongitude();
double Latitude = location.getLatitude();
Toast.makeText(getApplicationContext(), "Got Location",
Toast.LENGTH_LONG).show();
try {
SharedPreferences locationpref = getApplication()
.getSharedPreferences("location", MODE_WORLD_READABLE);
SharedPreferences.Editor prefsEditor = locationpref.edit();
prefsEditor.putString("Longitude", Longitude + "");
prefsEditor.putString("Latitude", Latitude + "");
prefsEditor.commit();
System.out.println("SHARE PREFERENCE ME PUT KAR DIYA.");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
// handler for the background updating
}
MyLocation
public class MyLocation {
Timer timer1;
LocationManager lm;
LocationResult locationResult;
boolean gps_enabled=false;
boolean network_enabled=false;
public boolean getLocation(Context context, LocationResult result)
{
//I use LocationResult callback class to pass location value from MyLocation to user code.
locationResult=result;
if(lm==null)
lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
//exceptions will be thrown if provider is not permitted.
try{gps_enabled=lm.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){}
try{network_enabled=lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}
//Toast.makeText(context, gps_enabled+" "+network_enabled, Toast.LENGTH_LONG).show();
//don't start listeners if no provider is enabled
if(!gps_enabled && !network_enabled)
return false;
if(gps_enabled)
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
if(network_enabled)
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
timer1=new Timer();
timer1.schedule(new GetLastLocation(), 10000);
// Toast.makeText(context, " Yaha Tak AAya", Toast.LENGTH_LONG).show();
return true;
}
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerNetwork);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerGps);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
class GetLastLocation extends TimerTask {
#Override
public void run() {
//Context context = getClass().getgetApplicationContext();
Location net_loc=null, gps_loc=null;
if(gps_enabled)
gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(network_enabled)
net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//if there are both values use the latest one
if(gps_loc!=null && net_loc!=null){
if(gps_loc.getTime()>net_loc.getTime())
locationResult.gotLocation(gps_loc);
else
locationResult.gotLocation(net_loc);
return;
}
if(gps_loc!=null){
locationResult.gotLocation(gps_loc);
return;
}
if(net_loc!=null){
locationResult.gotLocation(net_loc);
return;
}
locationResult.gotLocation(null);
}
}
public static abstract class LocationResult{
public abstract void gotLocation(Location location);
}
}
With google things changes very often: non of the previous answers worked for me.
based on this google training here is how you do it using
fused location provider
this requires Set Up Google Play Services
Activity class
public class GPSTrackerActivity extends AppCompatActivity implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
private GoogleApiClient mGoogleApiClient;
Location mLastLocation;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
}
protected void onStart() {
mGoogleApiClient.connect();
super.onStart();
}
protected void onStop() {
mGoogleApiClient.disconnect();
super.onStop();
}
#Override
public void onConnected(Bundle bundle) {
try {
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation != null) {
Intent intent = new Intent();
intent.putExtra("Longitude", mLastLocation.getLongitude());
intent.putExtra("Latitude", mLastLocation.getLatitude());
setResult(1,intent);
finish();
}
} catch (SecurityException e) {
}
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
}
usage
in you activity
Intent intent = new Intent(context, GPSTrackerActivity.class);
startActivityForResult(intent,1);
And this method
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == 1){
Bundle extras = data.getExtras();
Double longitude = extras.getDouble("Longitude");
Double latitude = extras.getDouble("Latitude");
}
}
you can got Current latlng using this
`
public class MainActivity extends ActionBarActivity {
private LocationManager locationManager;
private String provider;
private MyLocationListener mylistener;
private Criteria criteria;
#TargetApi(Build.VERSION_CODES.HONEYCOMB)
#SuppressLint("NewApi")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// Define the criteria how to select the location provider
criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_COARSE); //default
// user defines the criteria
criteria.setCostAllowed(false);
// get the best provider depending on the criteria
provider = locationManager.getBestProvider(criteria, false);
// the last known location of this provider
Location location = locationManager.getLastKnownLocation(provider);
mylistener = new MyLocationListener();
if (location != null) {
mylistener.onLocationChanged(location);
} else {
// leads to the settings because there is no last known location
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
// location updates: at least 1 meter and 200millsecs change
locationManager.requestLocationUpdates(provider, 200, 1, mylistener);
String a=""+location.getLatitude();
Toast.makeText(getApplicationContext(), a, 222).show();
}
private class MyLocationListener implements LocationListener {
#Override
public void onLocationChanged(Location location) {
// Initialize the location fields
Toast.makeText(MainActivity.this, ""+location.getLatitude()+location.getLongitude(),
Toast.LENGTH_SHORT).show()
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Toast.makeText(MainActivity.this, provider + "'s status changed to "+status +"!",
Toast.LENGTH_SHORT).show();
}
#Override
public void onProviderEnabled(String provider) {
Toast.makeText(MainActivity.this, "Provider " + provider + " enabled!",
Toast.LENGTH_SHORT).show();
}
#Override
public void onProviderDisabled(String provider) {
Toast.makeText(MainActivity.this, "Provider " + provider + " disabled!",
Toast.LENGTH_SHORT).show();
}
}
`
Above solutions is also correct, but some time if location is null then it crash the app or not working properly. The best way to get Latitude and Longitude of android is:
Geocoder geocoder;
String bestProvider;
List<Address> user = null;
double lat;
double lng;
LocationManager lm = (LocationManager) activity.getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
bestProvider = lm.getBestProvider(criteria, false);
Location location = lm.getLastKnownLocation(bestProvider);
if (location == null){
Toast.makeText(activity,"Location Not found",Toast.LENGTH_LONG).show();
}else{
geocoder = new Geocoder(activity);
try {
user = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
lat=(double)user.get(0).getLatitude();
lng=(double)user.get(0).getLongitude();
System.out.println(" DDD lat: " +lat+", longitude: "+lng);
}catch (Exception e) {
e.printStackTrace();
}
}
Best way is
Add permission manifest file
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
Then you can get GPS location or if GPS location is not available then this function return NETWORK location
public static Location getLocationWithCheckNetworkAndGPS(Context mContext) {
LocationManager lm = (LocationManager)
mContext.getSystemService(Context.LOCATION_SERVICE);
assert lm != null;
isGpsEnabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkLocationEnabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
Location networkLoacation = null, gpsLocation = null, finalLoc = null;
if (isGpsEnabled)
if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return null;
}gpsLocation = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (isNetworkLocationEnabled)
networkLoacation = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (gpsLocation != null && networkLoacation != null) {
//smaller the number more accurate result will
if (gpsLocation.getAccuracy() > networkLoacation.getAccuracy())
return finalLoc = networkLoacation;
else
return finalLoc = gpsLocation;
} else {
if (gpsLocation != null) {
return finalLoc = gpsLocation;
} else if (networkLoacation != null) {
return finalLoc = networkLoacation;
}
}
return finalLoc;
}
You can use FusedLocationProvider
For using Fused Location Provider in your project you will have to add the google play services location dependency in our app level build.gradle file
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
...
...
...
implementation 'com.google.android.gms:play-services-location:17.0.0'
}
Permissions in Manifest
Apps that use location services must request location permissions. Android offers two location permissions: ACCESS_COARSE_LOCATION and ACCESS_FINE_LOCATION.
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
As you may know that from Android 6.0 (Marshmallow) you must request permissions for important access in the runtime. Cause it’s a security issue where while installing an application, user may not clearly understand about an important permission of their device.
ActivityCompat.requestPermissions(
this,
arrayOf(Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION),
PERMISSION_ID
)
Then you can use the FusedLocationProvider Client to get the updated location in your desired place.
mFusedLocationClient.lastLocation.addOnCompleteListener(this) { task ->
var location: Location? = task.result
if (location == null) {
requestNewLocationData()
} else {
findViewById<TextView>(R.id.latTextView).text = location.latitude.toString()
findViewById<TextView>(R.id.lonTextView).text = location.longitude.toString()
}
}
You can also check certain configuration like if the device has location settings on or not. You can also check the article on Detect Current Latitude & Longitude using Kotlin in Android for more functionality.
If there is no cache location then it will catch the current location using:
private fun requestNewLocationData() {
var mLocationRequest = LocationRequest()
mLocationRequest.priority = LocationRequest.PRIORITY_HIGH_ACCURACY
mLocationRequest.interval = 0
mLocationRequest.fastestInterval = 0
mLocationRequest.numUpdates = 1
mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this)
mFusedLocationClient!!.requestLocationUpdates(
mLocationRequest, mLocationCallback,
Looper.myLooper()
)
}
Plug and play location-manager that can be used both in XML-based projects and Jetpack Compose projects (personally using it in JetpackCompose)
class LocationManager(context: Context): LocationCallback() {
val context = context
var publicCompletion: ((Double, Double) -> Unit)? = null
var fusedLocationProviderClient = FusedLocationProviderClient(
context
)
fun requestLocationPermission() {
val activity = context as Activity?
ActivityCompat.requestPermissions(
activity!!,
arrayOf(
Manifest.permission.ACCESS_FINE_LOCATION
),
101
)
}
fun checkIfLocationPermissionIsGranted(): Boolean {
return (ActivityCompat.checkSelfPermission(
context,
Manifest.permission.ACCESS_FINE_LOCATION
) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(
context,
Manifest.permission.ACCESS_COARSE_LOCATION
) != PackageManager.PERMISSION_GRANTED
)
}
fun getLatitudeLongitude(completion: (Double, Double) -> Unit) {
publicCompletion = { latitude, longitude ->
completion(latitude, longitude)
}
if (ActivityCompat.checkSelfPermission(
context,
Manifest.permission.ACCESS_FINE_LOCATION
) == PackageManager.PERMISSION_GRANTED
) {
val activity = context as Activity?
fusedLocationProviderClient.lastLocation.addOnCompleteListener(activity!!) { task ->
var location: Location? = task.result
if (location != null) {
publicCompletion?.let { it(location!!.latitude, location!!.longitude) }
} else {
requestLocationUpdates()
}
}
}
}
fun requestLocationUpdates() {
var request = LocationRequest()
request.priority = com.google.android.gms.location.LocationRequest.PRIORITY_HIGH_ACCURACY
request.fastestInterval = 0
request.numUpdates = 1
if (ActivityCompat.checkSelfPermission(
context,
Manifest.permission.ACCESS_FINE_LOCATION
) == PackageManager.PERMISSION_GRANTED
) {
fusedLocationProviderClient.requestLocationUpdates(
request, this, Looper.myLooper()
)
}
}
override fun onLocationResult(p0: LocationResult?) {
super.onLocationResult(p0)
publicCompletion?.let { it(p0!!.lastLocation!!.latitude, p0!!.lastLocation!!.longitude) }
}
override fun onLocationAvailability(p0: LocationAvailability?) {
super.onLocationAvailability(p0)
}
}
Just follow Google recommendation and prepared codes in kotlin: (Supports also Android 11 and 12):
https://github.com/googlecodelabs/while-in-use-location
and its step by step explanation:
https://codelabs.developers.google.com/codelabs/while-in-use-location