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Shared Preferences not working, Java android

I am unable to save or retrieve data in shared preferences. I have multiple activities.
I am not sure where I went wrong.
When I run the app it works fine except the data is not stored permanently as I wanted it to.
package com.obhan.weather;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback,GoogleMap.OnMapLongClickListener {
private GoogleMap mMap;
LocationManager locationManager;
LocationListener locationListener;
public void centerMapOnLocation(Location location, String title) {
LatLng userLocation = new LatLng(location.getLatitude(), location.getLongitude());
// mMap.clear();
if(title != "Your Location"){
mMap.addMarker(new MarkerOptions().position(userLocation).title(title));
}
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(userLocation, 10));
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(grantResults.length > 0 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)== PackageManager.PERMISSION_GRANTED){
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,locationListener);
Location lastKnownLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
centerMapOnLocation(lastKnownLocation,"Your Location");
}
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.clear();
mMap.setOnMapLongClickListener((GoogleMap.OnMapLongClickListener) this);
Intent intent = getIntent();
if (intent.getIntExtra("PlaceNumber", 0) == 0) {
//zoom in to users location
locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
locationListener = new LocationListener() {
#Override
public void onLocationChanged(Location location) {
centerMapOnLocation(location, "Your Location");
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
};
if (Build.VERSION.SDK_INT < 23) {
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;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
}else
{
if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)!=PackageManager.PERMISSION_GRANTED){
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION},1);
}else{
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,locationListener);
Location lastKnownLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
centerMapOnLocation(lastKnownLocation,"Your Location");
}
}
}
else{
Location placelocation = new Location(LocationManager.GPS_PROVIDER);
placelocation.setLatitude(MemorablePlaces.locations.get(intent.getIntExtra("PlaceNumber",0)).latitude);
placelocation.setLongitude(MemorablePlaces.locations.get(intent.getIntExtra("PlaceNumber",0)).longitude);
centerMapOnLocation(placelocation,MemorablePlaces.places.get(intent.getIntExtra("PlaceNumber",0)));
//mMap.addMarker(new MarkerOptions().position(MainActivity.locations.get(intent.getIntExtra("placeNumber",0))).title(MainActivity.places.get(intent.getIntExtra("placeNumber",0))));
}
// Toast.makeText(this, intent.getStringExtra("PlaceNumber"), Toast.LENGTH_SHORT).show();
// Add a marker in Sydney and move the camera
/* LatLng sydney = new LatLng(-34, 151);
mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));*/
}
#Override
public void onMapLongClick(LatLng latLng) {
Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
String address="";
try {
List<Address> listAddress =geocoder.getFromLocation(latLng.latitude,latLng.longitude,1);
if(listAddress!=null && listAddress.size()>0){
if(listAddress.get(0).getThoroughfare()!=null){
Log.i("Address",listAddress.get(0).toString());
address += listAddress.get(0).getThoroughfare();
// address = "";
Log.i("SubThrough", listAddress.get(0).getThoroughfare());
}
if(listAddress.get(0).getSubThoroughfare()!=null){
address +=listAddress.get(0).getSubThoroughfare();
}
// address +=listAddress.get(0).getThoroughfare();
// Log.i("Through",address);
}
} catch (IOException e) {
e.printStackTrace();
}
if(address==""){
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm yyyy-MM-dd");
address = sdf.format(new Date());
}
/* if(address=="Unnamed Road"){
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm yyyy-MM-dd");
address = sdf.format(new Date());
}*/
mMap.addMarker(new MarkerOptions().position(latLng).title(address));
MemorablePlaces.places.add(address);
MemorablePlaces.locations.add(latLng);
MemorablePlaces.arrayAdapter.notifyDataSetChanged();
SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("com.obhan.memorableplaces", Context.MODE_PRIVATE);
try {
ArrayList<String> latitudes = new ArrayList<>();
ArrayList<String > longitudes = new ArrayList<>();
for(LatLng coordinates: MemorablePlaces.locations){
latitudes.add(Double.toString(coordinates.latitude));
longitudes.add(Double.toString(coordinates.longitude));
}
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("places",ObjectSerializer.serialize(MemorablePlaces.places)).apply();
editor.putString("latitudes",ObjectSerializer.serialize(latitudes)).apply();
editor.putString("longitudes",ObjectSerializer.serialize (longitudes)).apply();
editor.commit();
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(this, "Location saved", Toast.LENGTH_SHORT).show();
///address="";
}
}

I don't see where you read your preferences and you are sure to not write your preferences .
But I think you don't have to write each time apply().
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("places",ObjectSerializer.serialize(MemorablePlaces.places));
editor.putString("latitudes",ObjectSerializer.serialize(latitudes));
editor.putString("longitudes",ObjectSerializer.serialize(longitudes));
editor.commit(); // or editor.apply()
And if it's not good, see with getApplicationContext(). I don't remember if in java, there's requireContext() (in kotlin yes). And try to replace the context.

how to get latlng from LocationSettingsResponse method?

I am Trying to make a map activity that i can choose my current location and make a marke on any location in the map,, i tried to use google documentation but i didn't understand how can i get latlng from this method any one have and idea about that !
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setInterval(10000);
locationRequest.setFastestInterval(5000);
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
// ...
SettingsClient client = LocationServices.getSettingsClient(this);
Task<LocationSettingsResponse> task = client.checkLocationSettings(builder.build());
task.addOnSuccessListener(this, new OnSuccessListener<LocationSettingsResponse>() {
#Override
public void onSuccess(LocationSettingsResponse locationSettingsResponse) {
// All location settings are satisfied. The client can initialize
// location requests here.
// ...
}
});

For your problem create a function like follows :
public void centreMapOnLocation(Location location, String title){
if (location != null) {
LatLng userLocation = new LatLng(location.getLatitude(), location.getLongitude());
mMap.addMarker(new MarkerOptions().position(userLocation).title(title));
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(userLocation, 15));
}
}
In onMapReady function add the following code :
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setOnMapLongClickListener(this);
mMap.clear();
locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
locationListener = new LocationListener() {
#Override
public void onLocationChanged(Location location) {
centreMapOnLocation(location, "Your Location");
}
#Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
#Override
public void onProviderEnabled(String s) {
}
#Override
public void onProviderDisabled(String s) {
}
};
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0 , 0, locationListener);
Location lastKnownLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
centreMapOnLocation(lastKnownLocation, "Your Location");
}else {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION},1);
}
}
In the onMapLongClick :
Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
String address = "";
try {
List<Address> listAddresses = geocoder.getFromLocation(latLng.latitude, latLng.longitude, 1);
if(listAddresses != null && listAddresses.size() > 0){
if (listAddresses.get(0).getThoroughfare() != null){
address += listAddresses.get(0).getThoroughfare() + " ";
}
address += listAddresses.get(0).getSubThoroughfare() + " ";
}
}catch (Exception e){
e.printStackTrace();
}
if (address.equals("")){
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm dd-MM-yyyy");
address += sdf.format(new Date());
}
mMap.addMarker(new MarkerOptions().position(latLng).title(address));
SharedPreferences sharedPreferences = this.getSharedPreferences("com.luv.memorableplaces", Context.MODE_PRIVATE);
try {
ArrayList<String> lat = new ArrayList<String>();
ArrayList<String> lng = new ArrayList<String>();
for (LatLng coord : MainActivity.locations){
lat.add(Double.toString(coord.latitude));
lng.add(Double.toString(coord.longitude));
sharedPreferences.edit().putString("latitudes", ObjectSerializer.serialize(lat)).apply();
sharedPreferences.edit().putString("longitudes", ObjectSerializer.serialize(lng)).apply();
}
sharedPreferences.edit().putString("places", ObjectSerializer.serialize(MainActivity.places)).apply();
}catch (Exception e){
e.printStackTrace();
}
Toast.makeText(this, "Location Saved", Toast.LENGTH_SHORT).show();
This will also help you save the previous location. Try it out, it should work.

Why my Location return null for the first attempt?

While I install my app first time its always return null Location but IF any other app use location then I re- run the app then my app can get my location address. How can I update location successfully from the first run?
//here is my code
public class UserinfoActivity extends AppCompatActivity implements LocationListener {
private Button button;
private EditText editText_pin, editText_mobile, editText_address;
DatabaseReference databaseReference;
MyPreferences myPreferences;
FusedLocationProviderClient fusedLocationProviderClient;
private static final int REQUEST_CODE = 101;
Location currentLocation;
Intent intentThatCalled;
public double latitude;
public double longitude;
public LocationManager locationManager;
public Criteria criteria;
public String bestProvider;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_userinfo);
databaseReference = FirebaseDatabase.getInstance().getReference("user_responses");
myPreferences = MyPreferences.getPreferences(this);
fusedLocationProviderClient= LocationServices.getFusedLocationProviderClient(this);
intentThatCalled = getIntent();
getLocation();
//optional_check
if ( ContextCompat.checkSelfPermission( this, android.Manifest.permission.ACCESS_COARSE_LOCATION ) != PackageManager.PERMISSION_GRANTED ) {
ActivityCompat.requestPermissions( this, new String[] { android.Manifest.permission.ACCESS_COARSE_LOCATION },
REQUEST_CODE);
}
Task<Location> task=fusedLocationProviderClient.getLastLocation();
task.addOnSuccessListener(new OnSuccessListener<Location>() {
#Override
public void onSuccess(Location location) {
if(location!=null){
currentLocation=location;
}
}
});
public static boolean isLocationEnabled(Context context) {
//...............
return true;
}
protected void getLocation() {
if (isLocationEnabled(UserinfoActivity.this)) {
locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
criteria = new Criteria();
bestProvider = String.valueOf(locationManager.getBestProvider(criteria, true)).toString();
//You can still do this if you like, you might get lucky:
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;
}
Location location = locationManager.getLastKnownLocation(bestProvider);
if (location != null) {
Log.e("TAG", "GPS is on");
Double latitude = location.getLatitude();
float float_latitude = latitude.floatValue();
myPreferences.setlatitude(float_latitude);
Double longitude = location.getLongitude();
float float_longitude = longitude.floatValue();
myPreferences.setlongitude(float_longitude);
/*Toast.makeText(MainActivity.this, "latitude:" + latitude + " longitude:" + longitude, Toast.LENGTH_SHORT).show();
searchNearestPlace(voice2text);*/
}
else{
//This is what you need:
locationManager.requestLocationUpdates(bestProvider, 1000, 0, this);
}
}
else
{
//prompt user to enable location....
//.................
}
}
#Override
protected void onPause() {
super.onPause();
locationManager.removeUpdates(this);
}
#Override
public void onLocationChanged(Location location) {
locationManager.removeUpdates(this);
//open the map:
latitude = location.getLatitude();
longitude = location.getLongitude();
/*Toast.makeText(MainActivity.this, "latitude:" + latitude + " longitude:" + longitude, Toast.LENGTH_SHORT).show();
searchNearestPlace(voice2text);*/
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
}

This link might help you
http://shaoniiuc.com/android/android-receiving-location-updates-kotlin/
I'm assuming you've already COARSE and FINE locations in your manifest
Or something like this:
Log.d("Find Location", "in find_location");
this.con = con;
String location_context = Context.LOCATION_SERVICE;
locationManager = (LocationManager) con.getSystemService(location_context);
List<String> providers = locationManager.getProviders(true);
for (String provider : providers) {
locationManager.requestLocationUpdates(provider, 1000, 0,
new LocationListener() {
public void onLocationChanged(Location location) {}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status,
Bundle extras) {}
});
Location location = locationManager.getLastKnownLocation(provider);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
addr = ConvertPointToLocation(latitude, longitude);
String temp_c = SendToUrl(addr);
}
}
}
Call this from any method.
Source: https://stackoverflow.com/a/9873478/13319579

How to stop a google map from continuously re-Centering at my location

My problem is related to Google Maps in android. when moving the camera at any point, it returns to my original location instantly, How can I stop that? , You can find my code below
The map starts normally and then for some reason it relocates it self to my original location when i try to navigate the map.
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, GoogleMap.OnMapLongClickListener {
private GoogleMap mMap;
LocationManager locationmanager ;
LocationListener locationlistener;
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (grantResults.length> 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
locationmanager.requestLocationUpdates(locationmanager.GPS_PROVIDER, 0, 0, locationlistener);
Location lastKnownLocation = locationmanager.getLastKnownLocation(locationmanager.GPS_PROVIDER);
centerMpOnLocation(lastKnownLocation, "your Location ");
}
}
}
public void centerMpOnLocation (Location location, String title){
if (location != null){
LatLng userLocation = new LatLng(location.getLatitude(), location.getLongitude());
mMap.clear();
if (title != "your Location") {
mMap.addMarker(new MarkerOptions().position(userLocation).title(title));
}
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(userLocation, 15));
}else {
Toast.makeText(this, "Wait till we get your Location", Toast.LENGTH_SHORT).show();
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just add a marker near Sydney, Australia.
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setOnMapLongClickListener(this);
Intent intent= getIntent();
if (intent.getIntExtra("placeNumber", 0) == 0){
locationmanager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
locationlistener = new LocationListener() {
#Override
public void onLocationChanged(Location location) {
centerMpOnLocation(location, "your Location");
}
#Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
#Override
public void onProviderEnabled(String s) {
}
#Override
public void onProviderDisabled(String s) {
}
};
if (Build.VERSION.SDK_INT < 23){
locationmanager.requestLocationUpdates(locationmanager.GPS_PROVIDER, 0, 0, locationlistener);
}else {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED){
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);
}else{
locationmanager.requestLocationUpdates(locationmanager.GPS_PROVIDER, 0, 0, locationlistener);
Location lastKnownLocation = locationmanager.getLastKnownLocation(locationmanager.GPS_PROVIDER);
centerMpOnLocation(lastKnownLocation, "your Location");
}
}
}else {
Location placeLocation = new Location(locationmanager.GPS_PROVIDER);
placeLocation.setLatitude(MainActivity.locations.get(intent.getIntExtra("placeNumber", 0)).latitude);
placeLocation.setLongitude(MainActivity.locations.get(intent.getIntExtra("placeNumber", 0)).longitude);
centerMpOnLocation(placeLocation, MainActivity.memorablePlaces.get(intent.getIntExtra("placeNumber", 0)));
}
}
#Override
public void onMapLongClick(LatLng latLng) {
Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
String address = "" ;
try {
List <Address> addresses = geocoder.getFromLocation(latLng.latitude, latLng.longitude, 1);
if (addresses != null && addresses.size() > 0){
if (addresses.get(0).getThoroughfare() != null){
if (addresses.get(0).getSubThoroughfare() != null){
address += addresses.get(0).getSubThoroughfare() + " ";
}
address += addresses.get(0).getThoroughfare();
}
}else if( address == "") { // عشان لو ماعرفتش اطلع عنوان هاحتاج اطلع تاريخ ووقت حاجه بديله يعنى
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm yyyy-MM-dd");
address = sdf.format(new Date());
}
} catch (IOException e) {
e.printStackTrace();
}
mMap.addMarker(new MarkerOptions().position(latLng).title(address));
MainActivity.memorablePlaces.add(address);
MainActivity.locations.add(latLng);
MainActivity.arrayAdapter.notifyDataSetChanged();
Toast.makeText(this, "Location Saved", Toast.LENGTH_SHORT).show();
}
}`
Anyone can fix this.
Thanks

You are centering to your location, each time there is a location update.
locationlistener = new LocationListener() {
#Override
public void onLocationChanged(Location location) {
centerMpOnLocation(location, "your Location");
}
...
}
Remove centerMpOnLocation(location, "your Location"); or change your logic.

How to get Latitude and Longitude of the mobile device in android?

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