Develop Reference

java android studio - check permission

i want to get coordinat and i'm use function GPSTracker (follow tutorial https://www.androidhive.info/2012/07/android-gps-location-manager-tutorial/) but any issue... i can't get coordinates, please help me guys
this is my acitivity :
public class InputDataSlo extends AppCompatActivity {
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
GPSTracker gps = new GPSTracker (InputDataSlo.this);
if(gps.canGetLocation()){
double latitude = gps.getLatitude();
double longitude= gps.getLongitude();
textView.setText("Latitude: "+latitude+" Longitude: "+longitude);
}else{
Toast.makeText(getApplicationContext(),
"Please cek permision", Toast.LENGTH_LONG)
.show();
}
}
});
}
This is file GPSTracker.java :
public class GPSTracker extends Service implements LocationListener {
private Context context;
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location location;
double latitude, longitude;
LocationManager locationManager;
AlertDialogManager am = new AlertDialogManager();
public GPSTracker(Context context) {
this.context = context;
getLocation();
}
private Location getLocation() {
// TODO Auto-generated method stub
try {
locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (isGPSEnabled) {
this.canGetLocation = true;
if (location == null) {
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
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 60000, 3, this);
if (locationManager != null){
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null){
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
} else {
showAlertDialog();
}
}catch(Exception e){
e.printStackTrace();
}
return location;
}
public void showSettingsAlert(){
AlertDialog.Builder alertDialog = new AlertDialog.Builder(GPSTracker.this);
// Setting Dialog Title
alertDialog.setTitle("GPS is settings");
// Setting Dialog Message
alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?");
// Setting Icon to Dialog
//alertDialog.setIcon(R.drawable.delete);
// On pressing Settings button
alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
dialog.cancel();
}
});
// on pressing cancel button
alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
public void showAlertDialog(){
am.showAlertDialog(GPSTracker.this, "GPS Setting", "Gps is not enabled. Do you want to enabled it ?", false);
}
public double getLatitude(){
if (location != null){
latitude = location.getLatitude();
}
return latitude;
}
public double getLongitude(){
if (location != null){
longitude = location.getLongitude();
}
return longitude;
}
public boolean canGetLocation(){
return this.canGetLocation;
}
#Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
if (location != null){
this.location = location;
}
}
#Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
}
My problem with access permissions row :
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
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 60000, 3, this);
if (locationManager != null){
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null){
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}

Don't use GPSTracker. The code is broken- it will sometimes work, but its flawed at a design level. It confuses enabled with up and running, and doesn't account for the fact you can't always get locations. For a full explanation of all the ways its broken, see my blog at http://gabesechansoftware.com/location-tracking/ which also contains working code.
Also, you need runtime permissions (which aren't in my blog either, as it predates them). You'll need to add those in regardless.

button get my location does not appear

I have a problem with my mapactivity, the button my current location no longer appears, and the gps tracker returns the position longitude 0 laltitude 0
I programmed this application several months ago, it worked! And now it does not work
Someone has an idea
MapsActivity.java
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
mMap.getUiSettings().setZoomControlsEnabled(true);
mMap.setMyLocationEnabled(true);
mMap.getUiSettings().setMapToolbarEnabled(true);
}
mMap.setOnMarkerDragListener(this);
mMap.setOnMapLongClickListener(this);
mMap.setOnMyLocationButtonClickListener(new GoogleMap.OnMyLocationButtonClickListener() {
#Override
public boolean onMyLocationButtonClick() {
LatLng loc = new LatLng(mMap.getMyLocation().getLatitude(), mMap.getMyLocation().getLongitude());
Longitude1 = mMap.getMyLocation().getLongitude();
Latitude1 = mMap.getMyLocation().getLatitude();
Toast.makeText(
getApplicationContext(),
"votre position", Toast.LENGTH_LONG).show();
mMap.moveCamera(CameraUpdateFactory.newLatLng(loc));
mMap.animateCamera(CameraUpdateFactory.zoomTo(18));
return true;
}
});
}
#Override
public void onConnected(Bundle bundle) {
gps = new GPSTracker(MapsActivity.this);
if(gps.canGetLocation()) {
Latitude1 = gps.getLatitude();
Longitude1 = gps.getLongitude();
moveMap();
} else {
gps.showSettingsAlert();
}
}
gpstracker.java
package com.example.getgpslocation;
import android.app.AlertDialog;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.Settings;
import android.util.Log;
public class GPSTracker extends Service implements LocationListener{
private final Context context;
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location location;
double latitude;
double longitude;
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10;
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1;
protected LocationManager locationManager;
public GPSTracker(Context context) {
this.context = context;
getLocation();
}
public Location getLocation() {
try {
locationManager = (LocationManager) context.getSystemService(LOCATION_SERVICE);
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if(!isGPSEnabled && !isNetworkEnabled) {
} else {
this.canGetLocation = true;
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
if(isGPSEnabled) {
if(location == null) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if(locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
public void stopUsingGPS() {
if(locationManager != null) {
locationManager.removeUpdates(GPSTracker.this);
}
}
public double getLatitude() {
if(location != null) {
latitude = location.getLatitude();
}
return latitude;
}
public double getLongitude() {
if(location != null) {
longitude = location.getLongitude();
}
return longitude;
}
public boolean canGetLocation() {
return this.canGetLocation;
}
public void showSettingsAlert() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(context);
alertDialog.setTitle("GPS is settings");
alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?");
alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
context.startActivity(intent);
}
});
alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
#Override
public void onLocationChanged(Location arg0) {
// TODO Auto-generated method stub
}
#Override
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
#Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
// TODO Auto-generated method stub
}
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
}

Android Wear App java.lang.OutOfMemoryError: Failed to allocate

I had a problem. I want to make an Android App for my Android Wear device. I want to get the latitude and longitude of my current location. But when I run the applicatie I got this error:
03-22 11:14:00.096 29013-29013/? E/AndroidRuntime: Error reporting crash
java.lang.OutOfMemoryError: Failed to allocate a 52435096 byte allocation with 2097152 free bytes and 32MB until OOM
at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:95)
at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:125)
at java.lang.StringBuffer.append(StringBuffer.java:278)
at java.io.StringWriter.write(StringWriter.java:123)
at com.android.internal.util.FastPrintWriter.flushLocked(FastPrintWriter.java:358)
at com.android.internal.util.FastPrintWriter.appendLocked(FastPrintWriter.java:303)
at com.android.internal.util.FastPrintWriter.write(FastPrintWriter.java:625)
at com.android.internal.util.FastPrintWriter.append(FastPrintWriter.java:658)
at java.io.PrintWriter.append(PrintWriter.java:691)
at java.io.PrintWriter.append(PrintWriter.java:687)
at java.io.Writer.append(Writer.java:198)
at java.lang.Throwable.printStackTrace(Throwable.java:324)
at java.lang.Throwable.printStackTrace(Throwable.java:300)
at android.util.Log.getStackTraceString(Log.java:343)
at com.android.internal.os.RuntimeInit.Clog_e(RuntimeInit.java:61)
at com.android.internal.os.RuntimeInit.-wrap0(RuntimeInit.java)
at com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:86)
at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:693)
at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:690)
This is my code:
MainActivity.java
public class MainActivity extends Activity {
private TextView tvHuidigeLocatie;
private Button btSetHuidigeLocatie;
GPSTracker gps;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final WatchViewStub stub = (WatchViewStub) findViewById(R.id.watch_view_stub);
stub.setOnLayoutInflatedListener(new WatchViewStub.OnLayoutInflatedListener() {
#Override
public void onLayoutInflated(WatchViewStub stub) {
onClickInfoButtonListener();
}
});
}
private void onClickInfoButtonListener() {
final WatchViewStub stub = (WatchViewStub) findViewById(R.id.watch_view_stub);
tvHuidigeLocatie = (TextView) stub.findViewById(R.id.tvHuidigeLocatie);
btSetHuidigeLocatie = (Button) stub.findViewById(R.id.btnSetHuidigeLocatie);
btSetHuidigeLocatie.setOnClickListener(
new View.OnClickListener(){
#Override
public void onClick(View v){
gps = new GPSTracker(MainActivity.this);
if(gps.canGetLocation()){
double latitude = gps.getLatitude();
double longitude = gps.getLongitude();
tvHuidigeLocatie.setText("" + latitude + ", " + longitude);
}else{
gps.showSettingsAlert();
}
}
}
);
}
}
GPSTracker.java
public class GPSTracker extends Service implements LocationListener {
private final Context context;
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location location;
double latitude;
double longitude;
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10;
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1;
protected LocationManager locationManager;
public GPSTracker(Context context) {
this.context = context;
getLocation();
}
public Location getLocation() {
try {
locationManager = (LocationManager) context.getSystemService(LOCATION_SERVICE);
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
} else {
this.canGetLocation = true;
if (isNetworkEnabled) {
if ( Build.VERSION.SDK_INT >= 23 &&
ContextCompat.checkSelfPermission(context, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission( context, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return location;
}
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
if (isGPSEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null) {
location = locationManager.getLastKnownLocation(locationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
public void stopUsingGPS() {
if (locationManager != null) {
locationManager.removeUpdates(GPSTracker.this);
}
}
public double getLatitude(){
if(location != null){
latitude = location.getLatitude();
}
return latitude;
}
public double getLongitude(){
if(location != null){
longitude = location.getLongitude();
}
return longitude;
}
public boolean canGetLocation(){
return this.canGetLocation();
}
public void showSettingsAlert(){
AlertDialog.Builder alertDialog = new AlertDialog.Builder(context);
alertDialog.setTitle("GPS in settings");
alertDialog.setMessage("GPS staat niet aan, Wilt u naar uw instellingen gaan?");
alertDialog.setPositiveButton("Instellingen", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
context.startActivity(intent);
}
});
alertDialog.setNegativeButton("Annuleer", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
#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) {
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
}
I hope anyone see the problem and can help me with this problem.

android:largeHeap="true"
In your android manifest, hope this will solve your problem.
http://developer.android.com/guide/topics/manifest/application-element.html#largeHeap

Lat/lgn return 0

I'm currently working on a project for school. I have to use location service. I have a marker problem. I can locate myself on the map with a small point from google (I think), but the marker is always on 0,0. If my logic is good, the getLatitude() and the getLongitude() return NULL. I've follow a tutorial for the code.
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
GPSTracker gps;
//ImageItem imgItem;
double lat;
double longi;
double latitude;
double longitude;
String adresse;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
laCreation();
}
public void laCreation() {
gps = new GPSTracker(MapsActivity.this);
if (gps.canGetLocation()==true) {
latitude = gps.getLatitude();
longitude = gps.getLongitude();
lat = latitude;
longi = longitude;
} else {
gps.showSettingsAlert();
}
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
mMap = mapFragment.getMap();
mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
}
mMap.setMyLocationEnabled(true);
LatLng position = new LatLng(lat, longi);
mMap.addMarker(new MarkerOptions().position(position).title("Vous : "+ latitude + ","+longitude +"," +adresse));//new LatLng(lat,longi)
mMap.moveCamera(CameraUpdateFactory.newLatLng(position));
}
public void onMapReady(GoogleMap googleMap) {}
}
Here is my GPSTracker :
public class GPSTracker extends Service implements LocationListener {
private final Context context;
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location location;
double latitude;
double longitude;
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; //10m avant update gps
private static final long MIN_TIME_BW_UPDATES = 2000; //2 sec avant uptade gps
protected LocationManager locationManager;
public GPSTracker(Context context) {
this.context = context;
getLocation();
}
public Location getLocation() {
try {
locationManager = (LocationManager) context.getSystemService(LOCATION_SERVICE);
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
} else {
this.canGetLocation = true;
onLocationChanged(location);
if (isGPSEnabled) { locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
if (latitude ==0){showSettingsAlert();}
}
}
}
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
if (latitude ==0){showSettingsAlert();}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
public void stopUsingGPS() {
if (locationManager != null) {
}
locationManager.removeUpdates(GPSTracker.this);
}
}
#Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
}
public double getLatitude(){
if(location != null){
latitude = location.getLatitude();
}
return latitude;
}
public double getLongitude(){
if(location != null){
longitude = location.getLongitude();
}
return longitude;
}
public boolean canGetLocation(){
return this.canGetLocation;
}
public void showSettingsAlert(){
AlertDialog.Builder alertDialog = new AlertDialog.Builder(context);
alertDialog.setTitle("GPS en cours de configuration");
alertDialog.setMessage("GPS non valide. Voulez-vous aller dans le menu de configuration?");
alertDialog.setPositiveButton("Configuration", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
context.startActivity(intent);
}
});
alertDialog.setNegativeButton("Annuler", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
#Override
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
#Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
// TODO Auto-generated method stub
}
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
}
I'm French, sorry for my bad English

You should utilize method
#Override
public void onLocationChanged(Location location) {
Log.i(TAG, location.getLatitude()+"-"+longitude = location.getLongitude());
// TODO Auto-generated method stub
}
for getting latitude and longitude. First time it will get definitely call and then it will be call and then as soon as location gets changed.
If you force fully asking for latti and longi their are chances OS is not having anything s it would return 0,0.
One way more ask for last known location using GoogleFuseLocationApi
public class SpotRecognistionService extends Service {
private static final String TAG = SpotRecognistionService.class.getSimpleName();
public static final String NOTIFICATION = "location.track.services.receiver";
//Google Api Client for Location
private GoogleApiClient mGoogleApiClient;
// private Location mLastLocation;
private LocationRequest mLocationRequest;
private GPSLocationListener gpsLocationListener;
#Override
public IBinder onBind(Intent intent) {
return null;
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(gpsLocationListener)
.addOnConnectionFailedListener(gpsLocationListener)
.addApi(LocationServices.API)
.build();
}
#Override
public void onCreate() {
super.onCreate();
Log.i(TAG, "Service creating");
gpsLocationListener = new GPSLocationListener();
buildGoogleApiClient();
//Connect to get Location
mGoogleApiClient.connect();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(TAG, "onStartCommand()");
return super.onStartCommand(intent, flags, startId);
}
#Override
public void onDestroy() {
super.onDestroy();
Log.i(TAG, "Service destroying");
if (mGoogleApiClient != null && mGoogleApiClient.isConnected())
mGoogleApiClient.disconnect();
}
private class GPSLocationListener implements LocationListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
#Override
public void onLocationChanged(Location location) {
if (location != null) {
//Update Result
publishResults(location.toString(), 1);
}
private void publishResults(String lat_Long, int result) {
Log.i(TAG, lat_Long);
}
#Override
public void onConnected(Bundle bundle) {
mLocationRequest = LocationRequest.create();
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setInterval(10000);
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
#Override
public void onConnectionSuspended(int i) {
reConnect();
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
reConnect();
}
public void reConnect() {
if (mGoogleApiClient != null && !mGoogleApiClient.isConnected())
mGoogleApiClient.connect();
}
}
}

Not receiving Location Updates in Android

I have two classes "GPSTracker" and "Live".
The GPSTracker has the GPS related functions i.e. to get the latitude and the longitude, while the Live class calls it to get the current Latitude and the Longitude and then calculate the distance travelled.
My problem is that I am not getting any changes in the location, the location remains at whatever it is at the start! No locationUpdates!
GPSTracker.java:
public class GPSTracker extends Service implements LocationListener
{
private final Context mContext;
// flag for GPS status
boolean isGPSEnabled = false;
// flag for network status
boolean isNetworkEnabled = false;
// flag for GPS status
boolean canGetLocation = false;
Location location; // location
double latitude; // latitude
double longitude; // longitude
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES =5; // 5 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 5; // 5 seconds
// Declaring a Location Manager
protected LocationManager locationManager;
public GPSTracker(Context context)
{
this.mContext = context;
getLocation();
}
public Location getLocation()
{
try
{
locationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled)
{
// no network provider is enabled
} else
{
this.canGetLocation = true;
if (isNetworkEnabled)
{
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
if (locationManager != null)
{
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null)
{
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
// if GPS Enabled get lat/long using GPS Services
if (isGPSEnabled)
{
if (location == null)
{
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null)
{
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null)
{
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
}
catch (Exception e)
{
e.printStackTrace();
}
return location;
}
/**
* Stop using GPS listener
* Calling this function will stop using GPS in your app
* */
public void stopUsingGPS()
{
if(locationManager != null)
{
locationManager.removeUpdates(GPSTracker.this);
}
}
/**
* Function to get latitude
* */
public double getLatitude()
{
if(location != null)
{
latitude = location.getLatitude();
}
// return latitude
return latitude;
}
/**
* Function to get longitude
* */
public double getLongitude()
{
if(location != null)
{
longitude = location.getLongitude();
}
// return longitude
return longitude;
}
/**
* Function to check GPS/wifi enabled
* #return boolean
* */
public boolean canGetLocation()
{
return this.canGetLocation;
}
/**
* Function to show settings alert dialog
* On pressing Settings button will lauch Settings Options
* */
public void showSettingsAlert()
{
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
// Setting Dialog Title
alertDialog.setTitle("GPS is not enabled");
// Setting Dialog Message
alertDialog.setMessage("Enable location services to determine your location.");
// On pressing Settings button
alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int which)
{
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
}
});
// on pressing cancel button
alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which)
{
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
#Override
public void onLocationChanged(Location location)
{
}
#Override
public void onProviderDisabled(String provider)
{
}
#Override
public void onProviderEnabled(String provider)
{
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras)
{
}
#Override
public IBinder onBind(Intent arg0)
{
return null;
}
}
Live.java:
public class Live extends Activity implements LocationListener
{
GPSTracker gps;
Location newLocation = new Location(LocationManager.GPS_PROVIDER);
Location oldLocation = new Location(LocationManager.GPS_PROVIDER);
float distanceTravelled=0;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_live);
startactivity();
}
public void startactivity()
{
gps = new GPSTracker(Live.this);
if(gps.canGetLocation())
{
double latitude = gps.getLatitude();
double longitude = gps.getLongitude();
Toast.makeText(getApplicationContext(), "Your Location is: \nLat: " + latitude + "\nLong: " + longitude, Toast.LENGTH_LONG).show();
newLocation.setLatitude(latitude);
newLocation.setLongitude(longitude);
}
else
{
gps.showSettingsAlert();
}
}
public void resumeactivity()
{
gps = new GPSTracker(Live.this);
if(gps.canGetLocation())
{
double latitude = gps.getLatitude();
double longitude = gps.getLongitude();
//Toast.makeText(getApplicationContext(), "Your Location is - \nLat: " + latitude + "\nLong: " + longitude, Toast.LENGTH_LONG).show();
newLocation.setLatitude(latitude);
newLocation.setLongitude(longitude);
}
else
{
}
}
public void onResume()
{
super.onResume();
resumeactivity();
}
#Override
public void onLocationChanged(Location location)
{
oldLocation.set(newLocation);
newLocation.set(location);
//resumeactivity();
distanceTravelled+=newLocation.distanceTo(oldLocation);
String stringDistance= Float.toString(distanceTravelled);
TextView distance = (TextView) findViewById(R.id.textDistance);
distance.setText(stringDistance);
}
#Override
public void onProviderDisabled(String arg0)
{
GPSTracker gps = new GPSTracker(Live.this);
gps.showSettingsAlert();
}
#Override
public void onProviderEnabled(String arg0)
{
}
#Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2)
{
}

I was facing same problem with my app, so what I did is reboot phone and Start the app under clear sky. It will might help you.

You can find a working example here. It is not calculating the distance, but this should be easy to add.