I'm trying to simply return the lat/lon of my current position using GPS. No matter what I do, the return is 0,0 for both Network and GPS. I've tried going by a window.
Here is my GPS code:
import android.app.Service;
//
import android.Manifest;
import android.app.AlertDialog;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
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.support.v4.app.ActivityCompat;
import android.util.Log;
import android.widget.Toast;
public class TrackGPS extends Service implements LocationListener {
private final Context mContext;
boolean checkGPS = false;
boolean checkNetwork = false;
boolean canGetLocation = false;
Location loc;
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 TrackGPS(Context mContext) {
this.mContext = mContext;
getLocation();
}
private Location getLocation() {
try {
locationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
checkGPS = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
checkNetwork = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!checkGPS && !checkNetwork) {
Toast.makeText(mContext, "No Service Provider Available", Toast.LENGTH_SHORT).show();
} else {
this.canGetLocation = true;
// First get location from Network Provider
if (checkNetwork) {
Toast.makeText(mContext, "Network", Toast.LENGTH_SHORT).show();
try {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
0,
0, this);
Log.d("Network", "Network");
if (locationManager != null) {
loc = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
if (loc != null) {
latitude = loc.getLatitude();
longitude = loc.getLongitude();
}
} catch (SecurityException e) {
}
}
}
// if GPS Enabled get lat/long using GPS Services
if (checkGPS) {
Toast.makeText(mContext, "GPS", Toast.LENGTH_SHORT).show();
if (loc == null) {
try {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null) {
loc = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (loc != null) {
latitude = loc.getLatitude();
longitude = loc.getLongitude();
}
}
} catch (SecurityException e) {
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return loc;
}
public double getLongitude() {
if (loc != null) {
longitude = loc.getLongitude();
}
return longitude;
}
public double getLatitude() {
if (loc != null) {
latitude = loc.getLatitude();
}
return latitude;
}
public boolean canGetLocation() {
return this.canGetLocation;
}
public void showSettingsAlert() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
alertDialog.setTitle("GPS Not Enabled");
alertDialog.setMessage("Do you wants to turn On GPS");
alertDialog.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
}
});
alertDialog.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
public void stopUsingGPS() {
if (locationManager != 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
// 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.removeUpdates(TrackGPS.this);
}
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onLocationChanged(Location location) {
// this.location = location;
getLatitude();
getLongitude();
}
#Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
#Override
public void onProviderEnabled(String s) {
}
#Override
public void onProviderDisabled(String s) {
}
}
Here is my Main Activity:
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private Button b_get;
private TrackGPS gps;
double longitude;
double latitude;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b_get = (Button)findViewById(R.id.get);
b_get.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
gps = new TrackGPS(MainActivity.this);
if(gps.canGetLocation()){
longitude = gps.getLongitude();
latitude = gps .getLatitude();
Toast.makeText(getApplicationContext(),"Longitude:"+Double.toString(longitude)+"\nLatitude:"+Double.toString(latitude),Toast.LENGTH_SHORT).show();
}
else
{
gps.showSettingsAlert();
}
}
});
}
#Override
protected void onDestroy() {
super.onDestroy();
gps.stopUsingGPS();
}
}
Here is my Android Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.quantums3.getcurrentlocation">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
Thanks in advance.
getLastKnownLocation returning 0,0 in Android
Not actually, the above method returned null in your case and due to your TrackGPS structure, you are seeing default values of double latitude; double longitude;
This question already has answers here:
Get GPS location via a service in Android
(7 answers)
Closed 4 years ago.
In my android app i want to get user current location every few minute interval and update in to my center server using web service.
Currently i am using Fused Location Provide for get user current location, See link
now i want to know what is the best way to get user location frequently and call web service.
below is my code which gives me user current location: -
locationrequest = LocationRequest.create();
locationrequest.setInterval(10000);
locationclient.requestLocationUpdates(locationrequest,new com.google.android.gms.location.LocationListener() {
#Override
public void onLocationChanged(Location location) {
Log.i(TAG, "Last Known Location :" + location.getLatitude() + "," + location.getLongitude());
}
});
now from where i have to call this code.
Can i use this in a background service or some where else.
Please provide your idea.
TIA.
None of the rest of the answers use:
com.google.android.gms.location.FusedLocationProviderClient
Which is the Fused Location Provider and the main entry point for interacting with the fused location provider by Google, and it is very hard to find a good example. This was released mid 2017 by Google.
Google Play services location APIs are preferred over the Android
framework location APIs (android.location)
If you are currently using the Android framework location APIs, you are strongly encouraged to switch to the Google Play services location APIs as soon as possible.
For you to use the Google Location API, first add this to your build.gradle
compile 'com.google.android.gms:play-services:11.0.0'
Then you can use this class Wherebouts.java:
import android.location.Location;
import android.os.Looper;
import android.util.Log;
import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationCallback;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationResult;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.location.LocationSettingsRequest;
/**
* Uses Google Play API for obtaining device locations
* Created by alejandro.tkachuk
* alejandro#calculistik.com
* www.calculistik.com Mobile Development
*/
public class Wherebouts {
private static final Wherebouts instance = new Wherebouts();
private static final String TAG = Wherebouts.class.getSimpleName();
private FusedLocationProviderClient mFusedLocationClient;
private LocationCallback locationCallback;
private LocationRequest locationRequest;
private LocationSettingsRequest locationSettingsRequest;
private Workable<GPSPoint> workable;
private static final long UPDATE_INTERVAL_IN_MILLISECONDS = 1000;
private static final long FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS = 1000;
private Wherebouts() {
this.locationRequest = new LocationRequest();
this.locationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS);
this.locationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS);
this.locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder();
builder.addLocationRequest(this.locationRequest);
this.locationSettingsRequest = builder.build();
this.locationCallback = new LocationCallback() {
#Override
public void onLocationResult(LocationResult locationResult) {
super.onLocationResult(locationResult); // why? This is ridiculous, Android!
Location currentLocation = locationResult.getLastLocation();
GPSPoint gpsPoint = new GPSPoint(currentLocation.getLatitude(), currentLocation.getLongitude());
Log.i(TAG, "Location Callback results: " + gpsPoint);
if (null != workable)
workable.work(gpsPoint);
}
};
this.mFusedLocationClient = LocationServices.getFusedLocationProviderClient(MainApplication.getAppContext());
this.mFusedLocationClient.requestLocationUpdates(this.locationRequest,
this.locationCallback, Looper.myLooper());
}
public static Wherebouts instance() {
return instance;
}
public void onChange(Workable<GPSPoint> workable) {
this.workable = workable;
}
public LocationSettingsRequest getLocationSettingsRequest() {
return this.locationSettingsRequest;
}
public void stop() {
Log.i(TAG, "stop() Stopping location tracking");
this.mFusedLocationClient.removeLocationUpdates(this.locationCallback);
}
}
From your Activity, you can use it like this, by passing a Workable object. A Workable object is nothing more than a custom Callback alike object.
Wherebouts.instance().onChange(workable);
By using a callback like Workable, you will write UI related code in your Activity and leave the hustle of working with GPS to a helper class, like Wherebouts.
new Workable<GPSPoint>() {
#Override
public void work(GPSPoint gpsPoint) {
// draw something in the UI with this new data
}
};
Of course, you would need to ask for the corresponding permissions to the Android OS for your App to use. You can read the following documentation for more info about that.
Android Reference https://developer.android.com/training/location/index.html
Wherebouts https://www.calculistik.com/Wherebouts.java
GPSPoint https://www.calculistik.com/GPSPoint.java
Workable https://www.calculistik.com/Workable.java
Download the source code from here (Get Current Location Using Background Service)
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="servicetutorial.service">
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity"
android:theme="#android:style/Theme.Translucent.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".GoogleService"></service>
</application>
</manifest>
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:background="#ffffff"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#3F51B5"
android:text="Location using service"
android:textColor="#ffffff"
android:textSize="20dp"
android:gravity="center"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="50dp">
<TextView
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Latitude"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:id="#+id/tv_latitude"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="50dp">
<TextView
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Longitude"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:id="#+id/tv_longitude"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="50dp">
<TextView
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Address"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:id="#+id/tv_address"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="50dp">
<TextView
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Area"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:id="#+id/tv_area"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="50dp">
<TextView
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Locality"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:id="#+id/tv_locality"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
</LinearLayout>
</LinearLayout>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/btn_start"
android:text="Get Location"
android:layout_alignParentBottom="true"/>
</RelativeLayout>
MainActivity.java
package servicetutorial.service;
import android.*;
import android.app.Activity;
import android.app.ActivityManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.preference.PreferenceManager;
import android.renderscript.Double2;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
public class MainActivity extends Activity {
Button btn_start;
private static final int REQUEST_PERMISSIONS = 100;
boolean boolean_permission;
TextView tv_latitude, tv_longitude, tv_address,tv_area,tv_locality;
SharedPreferences mPref;
SharedPreferences.Editor medit;
Double latitude,longitude;
Geocoder geocoder;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn_start = (Button) findViewById(R.id.btn_start);
tv_address = (TextView) findViewById(R.id.tv_address);
tv_latitude = (TextView) findViewById(R.id.tv_latitude);
tv_longitude = (TextView) findViewById(R.id.tv_longitude);
tv_area = (TextView)findViewById(R.id.tv_area);
tv_locality = (TextView)findViewById(R.id.tv_locality);
geocoder = new Geocoder(this, Locale.getDefault());
mPref = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
medit = mPref.edit();
btn_start.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (boolean_permission) {
if (mPref.getString("service", "").matches("")) {
medit.putString("service", "service").commit();
Intent intent = new Intent(getApplicationContext(), GoogleService.class);
startService(intent);
} else {
Toast.makeText(getApplicationContext(), "Service is already running", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(getApplicationContext(), "Please enable the gps", Toast.LENGTH_SHORT).show();
}
}
});
fn_permission();
}
private void fn_permission() {
if ((ContextCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)) {
if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION))) {
} else {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION
},
REQUEST_PERMISSIONS);
}
} else {
boolean_permission = true;
}
}
#Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case REQUEST_PERMISSIONS: {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
boolean_permission = true;
} else {
Toast.makeText(getApplicationContext(), "Please allow the permission", Toast.LENGTH_LONG).show();
}
}
}
}
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
latitude = Double.valueOf(intent.getStringExtra("latutide"));
longitude = Double.valueOf(intent.getStringExtra("longitude"));
List<Address> addresses = null;
try {
addresses = geocoder.getFromLocation(latitude, longitude, 1);
String cityName = addresses.get(0).getAddressLine(0);
String stateName = addresses.get(0).getAddressLine(1);
String countryName = addresses.get(0).getAddressLine(2);
tv_area.setText(addresses.get(0).getAdminArea());
tv_locality.setText(stateName);
tv_address.setText(countryName);
} catch (IOException e1) {
e1.printStackTrace();
}
tv_latitude.setText(latitude+"");
tv_longitude.setText(longitude+"");
tv_address.getText();
}
};
#Override
protected void onResume() {
super.onResume();
registerReceiver(broadcastReceiver, new IntentFilter(GoogleService.str_receiver));
}
#Override
protected void onPause() {
super.onPause();
unregisterReceiver(broadcastReceiver);
}
}
GoogleService.java
package servicetutorial.service;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.util.Log;
import java.util.Timer;
import java.util.TimerTask;
/**
* Created by deepshikha on 24/11/16.
*/
public class GoogleService extends Service implements LocationListener{
boolean isGPSEnable = false;
boolean isNetworkEnable = false;
double latitude,longitude;
LocationManager locationManager;
Location location;
private Handler mHandler = new Handler();
private Timer mTimer = null;
long notify_interval = 1000;
public static String str_receiver = "servicetutorial.service.receiver";
Intent intent;
public GoogleService() {
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
mTimer = new Timer();
mTimer.schedule(new TimerTaskToGetLocation(),5,notify_interval);
intent = new Intent(str_receiver);
// fn_getlocation();
}
#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) {
}
private void fn_getlocation(){
locationManager = (LocationManager)getApplicationContext().getSystemService(LOCATION_SERVICE);
isGPSEnable = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnable = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnable && !isNetworkEnable){
}else {
if (isNetworkEnable){
location = null;
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,1000,0,this);
if (locationManager!=null){
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location!=null){
Log.e("latitude",location.getLatitude()+"");
Log.e("longitude",location.getLongitude()+"");
latitude = location.getLatitude();
longitude = location.getLongitude();
fn_update(location);
}
}
}
if (isGPSEnable){
location = null;
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,1000,0,this);
if (locationManager!=null){
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location!=null){
Log.e("latitude",location.getLatitude()+"");
Log.e("longitude",location.getLongitude()+"");
latitude = location.getLatitude();
longitude = location.getLongitude();
fn_update(location);
}
}
}
}
}
private class TimerTaskToGetLocation extends TimerTask{
#Override
public void run() {
mHandler.post(new Runnable() {
#Override
public void run() {
fn_getlocation();
}
});
}
}
private void fn_update(Location location){
intent.putExtra("latutide",location.getLatitude()+"");
intent.putExtra("longitude",location.getLongitude()+"");
sendBroadcast(intent);
}
}
Add this dependency
compile 'com.google.android.gms:play-services:9.4.0'
Grant required permission ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION after start service
import android.annotation.SuppressLint;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.IntentSender;
import android.location.Location;
import android.location.LocationListener;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.NotificationCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.ResolvableApiException;
import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationCallback;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationResult;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.location.LocationSettingsRequest;
import com.google.android.gms.location.LocationSettingsResponse;
import com.google.android.gms.location.LocationSettingsStatusCodes;
import com.google.android.gms.location.SettingsClient;
import com.google.android.gms.tasks.OnCanceledListener;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import java.util.concurrent.TimeUnit;
/**
* Created by Ketan Ramani on 05/11/18.
*/
public class BackgroundLocationUpdateService extends Service implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
/* Declare in manifest
<service android:name=".BackgroundLocationUpdateService"/>
*/
private final String TAG = "BackgroundLocationUpdateService";
private final String TAG_LOCATION = "TAG_LOCATION";
private Context context;
private boolean stopService = false;
/* For Google Fused API */
protected GoogleApiClient mGoogleApiClient;
protected LocationSettingsRequest mLocationSettingsRequest;
private String latitude = "0.0", longitude = "0.0";
private FusedLocationProviderClient mFusedLocationClient;
private SettingsClient mSettingsClient;
private LocationCallback mLocationCallback;
private LocationRequest mLocationRequest;
private Location mCurrentLocation;
/* For Google Fused API */
#Override
public void onCreate() {
super.onCreate();
context = this;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
StartForeground();
final Handler handler = new Handler();
final Runnable runnable = new Runnable() {
#Override
public void run() {
try {
if (!stopService) {
//Perform your task here
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (!stopService) {
handler.postDelayed(this, TimeUnit.SECONDS.toMillis(10));
}
}
}
};
handler.postDelayed(runnable, 2000);
buildGoogleApiClient();
return START_STICKY;
}
#Override
public void onDestroy() {
Log.e(TAG, "Service Stopped");
stopService = true;
if (mFusedLocationClient != null) {
mFusedLocationClient.removeLocationUpdates(mLocationCallback);
Log.e(TAG_LOCATION, "Location Update Callback Removed");
}
super.onDestroy();
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
private void StartForeground() {
Intent intent = new Intent(context, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT);
String CHANNEL_ID = "channel_location";
String CHANNEL_NAME = "channel_location";
NotificationCompat.Builder builder = null;
NotificationManager notificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_DEFAULT);
channel.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
notificationManager.createNotificationChannel(channel);
builder = new NotificationCompat.Builder(getApplicationContext(), CHANNEL_ID);
builder.setChannelId(CHANNEL_ID);
builder.setBadgeIconType(NotificationCompat.BADGE_ICON_NONE);
} else {
builder = new NotificationCompat.Builder(getApplicationContext(), CHANNEL_ID);
}
builder.setContentTitle("Your title");
builder.setContentText("You are now online");
Uri notificationSound = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_NOTIFICATION);
builder.setSound(notificationSound);
builder.setAutoCancel(true);
builder.setSmallIcon(R.drawable.ic_logo);
builder.setContentIntent(pendingIntent);
Notification notification = builder.build();
startForeground(101, notification);
}
#Override
public void onLocationChanged(Location location) {
Log.e(TAG_LOCATION, "Location Changed Latitude : " + location.getLatitude() + "\tLongitude : " + location.getLongitude());
latitude = String.valueOf(location.getLatitude());
longitude = String.valueOf(location.getLongitude());
if (latitude.equalsIgnoreCase("0.0") && longitude.equalsIgnoreCase("0.0")) {
requestLocationUpdate();
} else {
Log.e(TAG_LOCATION, "Latitude : " + location.getLatitude() + "\tLongitude : " + location.getLongitude());
}
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
#Override
public void onConnected(#Nullable Bundle bundle) {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(10 * 1000);
mLocationRequest.setFastestInterval(5 * 1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder();
builder.addLocationRequest(mLocationRequest);
builder.setAlwaysShow(true);
mLocationSettingsRequest = builder.build();
mSettingsClient
.checkLocationSettings(mLocationSettingsRequest)
.addOnSuccessListener(new OnSuccessListener<LocationSettingsResponse>() {
#Override
public void onSuccess(LocationSettingsResponse locationSettingsResponse) {
Log.e(TAG_LOCATION, "GPS Success");
requestLocationUpdate();
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
int statusCode = ((ApiException) e).getStatusCode();
switch (statusCode) {
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
try {
int REQUEST_CHECK_SETTINGS = 214;
ResolvableApiException rae = (ResolvableApiException) e;
rae.startResolutionForResult((AppCompatActivity) context, REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException sie) {
Log.e(TAG_LOCATION, "Unable to execute request.");
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
Log.e(TAG_LOCATION, "Location settings are inadequate, and cannot be fixed here. Fix in Settings.");
}
}
}).addOnCanceledListener(new OnCanceledListener() {
#Override
public void onCanceled() {
Log.e(TAG_LOCATION, "checkLocationSettings -> onCanceled");
}
});
}
#Override
public void onConnectionSuspended(int i) {
connectGoogleClient();
}
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
buildGoogleApiClient();
}
protected synchronized void buildGoogleApiClient() {
mFusedLocationClient = LocationServices.getFusedLocationProviderClient(context);
mSettingsClient = LocationServices.getSettingsClient(context);
mGoogleApiClient = new GoogleApiClient.Builder(context)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
connectGoogleClient();
mLocationCallback = new LocationCallback() {
#Override
public void onLocationResult(LocationResult locationResult) {
super.onLocationResult(locationResult);
Log.e(TAG_LOCATION, "Location Received");
mCurrentLocation = locationResult.getLastLocation();
onLocationChanged(mCurrentLocation);
}
};
}
private void connectGoogleClient() {
GoogleApiAvailability googleAPI = GoogleApiAvailability.getInstance();
int resultCode = googleAPI.isGooglePlayServicesAvailable(context);
if (resultCode == ConnectionResult.SUCCESS) {
mGoogleApiClient.connect();
}
}
#SuppressLint("MissingPermission")
private void requestLocationUpdate() {
mFusedLocationClient.requestLocationUpdates(mLocationRequest, mLocationCallback, Looper.myLooper());
}
}
In Activity
Start Service : startService(new Intent(this, BackgroundLocationUpdateService.class));
Stop Service : stopService(new Intent(this, BackgroundLocationUpdateService.class));
In Fragment
Start Service : getActivity().startService(new Intent(getActivity().getBaseContext(), BackgroundLocationUpdateService.class));
Stop Service : getActivity().stopService(new Intent(getActivity(), BackgroundLocationUpdateService.class));
Use : GCM Network Manager
Run this to start a periodic task that will be ran even after re-boot:
PeriodicTask task = new PeriodicTask.Builder()
.setService(MyLocationService.class)
.setTag("periodic")
.setPeriod(30L)
.setPersisted(true)
.build();
mGcmNetworkManager.schedule(task);
then in onRunTask() get current location and use it (in this example, event is submitted at the end to let UI know that location was found):
public void getLastKnownLocation() {
Location lastKnownGPSLocation;
Location lastKnownNetworkLocation;
String gpsLocationProvider = LocationManager.GPS_PROVIDER;
String networkLocationProvider = LocationManager.NETWORK_PROVIDER;
try {
locationManager = (LocationManager) App.get().getSystemService(Context.LOCATION_SERVICE);
lastKnownNetworkLocation = locationManager.getLastKnownLocation(networkLocationProvider);
lastKnownGPSLocation = locationManager.getLastKnownLocation(gpsLocationProvider);
if (lastKnownGPSLocation != null) {
Log.i(TAG, "lastKnownGPSLocation is used.");
this.mCurrentLocation = lastKnownGPSLocation;
} else if (lastKnownNetworkLocation != null) {
Log.i(TAG, "lastKnownNetworkLocation is used.");
this.mCurrentLocation = lastKnownNetworkLocation;
} else {
Log.e(TAG, "lastLocation is not known.");
return;
}
LocationChangedEvent event = new LocationChangedEvent();
event.setLocation(mCurrentLocation);
EventHelper.publishEvent(event);
} catch (SecurityException sex) {
Log.e(TAG, "Location permission is not granted!");
}
return;
}
The MyLocationService in whole:
public class MyLocationService extends GcmTaskService {
private static final String TAG = MyLocationService.class.getSimpleName();
private LocationManager locationManager;
private Location mCurrentLocation;
public static final String TASK_GET_LOCATION_ONCE="location_oneoff_task";
public static final String TASK_GET_LOCATION_PERIODIC="location_periodic_task";
private static final int RC_PLAY_SERVICES = 123;
#Override
public void onInitializeTasks() {
// When your package is removed or updated, all of its network tasks are cleared by
// the GcmNetworkManager. You can override this method to reschedule them in the case of
// an updated package. This is not called when your application is first installed.
//
// This is called on your application's main thread.
startPeriodicLocationTask(TASK_GET_LOCATION_PERIODIC,
30L, null);
}
#Override
public int onRunTask(TaskParams taskParams) {
Log.d(TAG, "onRunTask: " + taskParams.getTag());
String tag = taskParams.getTag();
Bundle extras = taskParams.getExtras();
// Default result is success.
int result = GcmNetworkManager.RESULT_SUCCESS;
switch (tag) {
case TASK_GET_LOCATION_ONCE:
getLastKnownLocation();
break;
case TASK_GET_LOCATION_PERIODIC:
getLastKnownLocation();
break;
}
return result;
}
public void getLastKnownLocation() {
Location lastKnownGPSLocation;
Location lastKnownNetworkLocation;
String gpsLocationProvider = LocationManager.GPS_PROVIDER;
String networkLocationProvider = LocationManager.NETWORK_PROVIDER;
try {
locationManager = (LocationManager) App.get().getSystemService(Context.LOCATION_SERVICE);
lastKnownNetworkLocation = locationManager.getLastKnownLocation(networkLocationProvider);
lastKnownGPSLocation = locationManager.getLastKnownLocation(gpsLocationProvider);
if (lastKnownGPSLocation != null) {
Log.i(TAG, "lastKnownGPSLocation is used.");
this.mCurrentLocation = lastKnownGPSLocation;
} else if (lastKnownNetworkLocation != null) {
Log.i(TAG, "lastKnownNetworkLocation is used.");
this.mCurrentLocation = lastKnownNetworkLocation;
} else {
Log.e(TAG, "lastLocation is not known.");
return;
}
LocationChangedEvent event = new LocationChangedEvent();
event.setLocation(mCurrentLocation);
EventHelper.publishEvent(event);
} catch (SecurityException sex) {
Log.e(TAG, "Location permission is not granted!");
}
return;
}
public static void startOneOffLocationTask(String tag, Bundle extras) {
Log.d(TAG, "startOneOffLocationTask");
GcmNetworkManager mGcmNetworkManager = GcmNetworkManager.getInstance(App.get());
OneoffTask.Builder taskBuilder = new OneoffTask.Builder()
.setService(MyLocationService.class)
.setTag(tag);
if (extras != null) taskBuilder.setExtras(extras);
OneoffTask task = taskBuilder.build();
mGcmNetworkManager.schedule(task);
}
public static void startPeriodicLocationTask(String tag, Long period, Bundle extras) {
Log.d(TAG, "startPeriodicLocationTask");
GcmNetworkManager mGcmNetworkManager = GcmNetworkManager.getInstance(App.get());
PeriodicTask.Builder taskBuilder = new PeriodicTask.Builder()
.setService(MyLocationService.class)
.setTag(tag)
.setPeriod(period)
.setPersisted(true)
.setRequiredNetwork(Task.NETWORK_STATE_CONNECTED);
if (extras != null) taskBuilder.setExtras(extras);
PeriodicTask task = taskBuilder.build();
mGcmNetworkManager.schedule(task);
}
public static boolean checkPlayServicesAvailable(Activity activity) {
GoogleApiAvailability availability = GoogleApiAvailability.getInstance();
int resultCode = availability.isGooglePlayServicesAvailable(App.get());
if (resultCode != ConnectionResult.SUCCESS) {
if (availability.isUserResolvableError(resultCode)) {
// Show dialog to resolve the error.
availability.getErrorDialog(activity, resultCode, RC_PLAY_SERVICES).show();
}
return false;
} else {
return true;
}
}
Also add these 2 to the AndroidManifest.xml:
<manifest...
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application...
<service
android:name=".api.location.MyLocationService"
android:exported="true"
android:permission="com.google.android.gms.permission.BIND_NETWORK_TASK_SERVICE">
<intent-filter>
<action android:name="com.google.android.gms.gcm.ACTION_TASK_READY" />
</intent-filter>
</service>
You have to create service.That service should implement LocationListener. Then You have to use AlarmManager for calling service repeatedly with certain time limit.
I hope this one will help to you :)
I have try to my code and got success try this
package com.mobeyosoft.latitudelongitude;
import android.app.Service;
import android.content.Context;
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.util.Log;
import android.widget.Toast;
/**
* Created by 5943 6417 on 14-09-2016.
*/
public class LocationService extends Service
{
public static final String BROADCAST_ACTION = "Hello World";
private static final int TWO_MINUTES = 1000 * 60 * 1;
public LocationManager locationManager;
public MyLocationListener listener;
public Location previousBestLocation = null;
Context context;
Intent intent;
int counter = 0;
#Override
public void onCreate() {
super.onCreate();
intent = new Intent(BROADCAST_ACTION);
context=this;
}
#Override
public void onStart(Intent intent, int startId) {
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
listener = new MyLocationListener();
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 4000, 0, listener);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 4000, 0, listener);
}
#Override
public IBinder onBind(Intent intent){
return null;
}
protected boolean isBetterLocation(Location location, Location currentBestLocation) {
if (currentBestLocation == null) {
// A new location is always better than no location
return true;
}
// Check whether the new location fix is newer or older
long timeDelta = location.getTime() - currentBestLocation.getTime();
boolean isSignificantlyNewer = timeDelta > TWO_MINUTES;
boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES;
boolean isNewer = timeDelta > 0;
// If it's been more than two minutes since the current location, use the new location
// because the user has likely moved
if (isSignificantlyNewer) {
return true;
// If the new location is more than two minutes older, it must be worse
} else if (isSignificantlyOlder) {
return false;
}
// Check whether the new location fix is more or less accurate
int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation.getAccuracy());
boolean isLessAccurate = accuracyDelta > 0;
boolean isMoreAccurate = accuracyDelta < 0;
boolean isSignificantlyLessAccurate = accuracyDelta > 200;
// Check if the old and new location are from the same provider
boolean isFromSameProvider = isSameProvider(location.getProvider(),
currentBestLocation.getProvider());
// Determine location quality using a combination of timeliness and accuracy
if (isMoreAccurate) {
return true;
} else if (isNewer && !isLessAccurate) {
return true;
} else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) {
return true;
}
return false;
}
/** Checks whether two providers are the same */
private boolean isSameProvider(String provider1, String provider2) {
if (provider1 == null) {
return provider2 == null;
}
return provider1.equals(provider2);
}
#Override
public void onDestroy() {
// handler.removeCallbacks(sendUpdatesToUI);
super.onDestroy();
Log.v("STOP_SERVICE", "DONE");
locationManager.removeUpdates(listener);
}
public static Thread performOnBackgroundThread(final Runnable runnable) {
final Thread t = new Thread() {
#Override
public void run() {
try {
runnable.run();
} finally {
}
}
};
t.start();
return t;
}
public class MyLocationListener implements LocationListener{
public void onLocationChanged(final Location loc)
{
Log.i("**********", "Location changed");
if(isBetterLocation(loc, previousBestLocation)) {
loc.getLatitude();
loc.getLongitude();
Toast.makeText(context, "Latitude" + loc.getLatitude() + "\nLongitude"+loc.getLongitude(),Toast.LENGTH_SHORT).show();
intent.putExtra("Latitude", loc.getLatitude());
intent.putExtra("Longitude", loc.getLongitude());
intent.putExtra("Provider", loc.getProvider());
sendBroadcast(intent);
}
}
public void onProviderDisabled(String provider)
{
Toast.makeText( getApplicationContext(), "Gps Disabled", Toast.LENGTH_SHORT ).show();
}
public void onProviderEnabled(String provider)
{
Toast.makeText( getApplicationContext(), "Gps Enabled", Toast.LENGTH_SHORT).show();
}
public void onStatusChanged(String provider, int status, Bundle extras)
{
}
}
}
With the help of GoogleApiClient's LocationServices API we can get the current location of the user/device in specific time interval. This can be added into a background service which updates the Activity when onLocationChanged callbacks
The background service will keep running as long as the application exists in the memory and sticks to the notification drawer. The service handles the following functionalities,
Connecting to Google LocationServices API
Getting the current location
Sharing the result to the Activity
Service With Location Listener
public class LocationMonitoringService extends Service implements
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener,
LocationListener {
...
...
...
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
mLocationClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mLocationRequest.setInterval(10000); //10 secs
mLocationRequest.setFastestInterval(5000); //5 secs
int priority = LocationRequest.PRIORITY_HIGH_ACCURACY; //by default
//PRIORITY_BALANCED_POWER_ACCURACY, PRIORITY_LOW_POWER, PRIORITY_NO_POWER are the other priority modes
mLocationRequest.setPriority(priority);
mLocationClient.connect();
//Make it stick to the notification panel so it is less prone to get cancelled by the Operating System.
return START_STICKY;
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
/*
* LOCATION CALLBACKS
*/
#Override
public void onConnected(Bundle dataBundle) {
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.
Log.d(TAG, "== Error On onConnected() Permission not granted");
//Permission not granted by user so cancel the further execution.
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(mLocationClient, mLocationRequest, this);
Log.d(TAG, "Connected to Google API");
}
/*
* Called by Location Services if the connection to the
* location client drops because of an error.
*/
#Override
public void onConnectionSuspended(int i) {
Log.d(TAG, "Connection suspended");
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.d(TAG, "Failed to connect to Google API");
}
//to get the location change
#Override
public void onLocationChanged(Location location) {
Log.d(TAG, "Location changed");
if (location != null) {
//Do something with the location details,
if (location != null) {
//call your API
callAPI(String.valueOf(location.getLatitude()), String.valueOf(location.getLongitude()));
}
}
}
}
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.hardware.GeomagneticField;
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.widget.Toast;
public class LocationService extends Service {
private static final int MINUTES = 1000 * 60 * 2;
public LocationManager locationManager;
public MyLocationListener listener;
public Location previousBestLocation = null;
Context mContext;
private boolean isGpsEnabled = false;
private boolean isNetworkEnabled = false;
private GeomagneticField geoField;
private double latitude = 0.0;
private double longitude = 0.0;
#Override
public void onCreate() {
super.onCreate();
mContext = getApplicationContext();
if (locationManager == null) {
locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
}
getCurrentLocation();
}
private void getCurrentLocation() {
try {
assert locationManager != null;
isGpsEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch (Exception ex) {
ex.printStackTrace();
}
if (!isGpsEnabled && !isNetworkEnabled) {
showSettingsAlert();
}
listener = new MyLocationListener();
try {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 10000, 0, listener);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 10000, 0, listener);
} catch (SecurityException e) {
e.printStackTrace();
}
}
private void showSettingsAlert() {
Toast.makeText(mContext, "GPS is disabled in your device. Please Enable it ?", Toast.LENGTH_LONG).show();
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivity(intent);
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
protected boolean isBetterLocation(Location location, Location currentBestLocation) {
if (currentBestLocation == null) {
return true;
}
long timeDelta = location.getTime() - currentBestLocation.getTime();
boolean isSignificantlyNewer = timeDelta > MINUTES;
boolean isSignificantlyOlder = timeDelta < -MINUTES;
boolean isNewer = timeDelta > 0;
if (isSignificantlyNewer) {
return true;
} else if (isSignificantlyOlder) {
return false;
}
int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation.getAccuracy());
boolean isLessAccurate = accuracyDelta > 0;
boolean isMoreAccurate = accuracyDelta < 0;
boolean isSignificantlyLessAccurate = accuracyDelta > 200;
boolean isFromSameProvider = isSameProvider(location.getProvider(), currentBestLocation.getProvider());
if (isMoreAccurate) {
return true;
} else if (isNewer && !isLessAccurate) {
return true;
} else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) {
return true;
}
return false;
}
private boolean isSameProvider(String provider1, String provider2) {
if (provider1 == null) {
return provider2 == null;
}
return provider1.equals(provider2);
}
#Override
public void onDestroy() {
super.onDestroy();
locationManager.removeUpdates(listener);
}
private void setupFinalLocationData(Location mLocation) {
if (mLocation != null) {
geoField = new GeomagneticField(
Double.valueOf(mLocation.getLatitude()).floatValue(),
Double.valueOf(mLocation.getLongitude()).floatValue(),
Double.valueOf(mLocation.getAltitude()).floatValue(),
System.currentTimeMillis()
);
latitude = mLocation.getLatitude();
longitude = mLocation.getLongitude();
//Update latitude and longtitude in SharedPreference...
}
}
public class MyLocationListener implements LocationListener {
public void onLocationChanged(final Location loc) {
if (isBetterLocation(loc, previousBestLocation)) {
setupFinalLocationData(loc);
}
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}
}
--Kotlin Version
package com.ps.salestrackingapp.Services
import android.app.Service
import android.content.Context
import android.content.Intent
import android.location.Location
import android.location.LocationManager
import android.os.Bundle
import android.os.IBinder
import android.util.Log
class LocationService : Service() {
private var mLocationManager: LocationManager? = null
var mLocationListeners = arrayOf(LocationListener(LocationManager.GPS_PROVIDER), LocationListener(LocationManager.NETWORK_PROVIDER))
class LocationListener(provider: String) : android.location.LocationListener {
internal var mLastLocation: Location
init {
Log.e(TAG, "LocationListener $provider")
mLastLocation = Location(provider)
}
override fun onLocationChanged(location: Location) {
Log.e(TAG, "onLocationChanged: $location")
mLastLocation.set(location)
Log.v("LastLocation", mLastLocation.latitude.toString() +" " + mLastLocation.longitude.toString())
}
override fun onProviderDisabled(provider: String) {
Log.e(TAG, "onProviderDisabled: $provider")
}
override fun onProviderEnabled(provider: String) {
Log.e(TAG, "onProviderEnabled: $provider")
}
override fun onStatusChanged(provider: String, status: Int, extras: Bundle) {
Log.e(TAG, "onStatusChanged: $provider")
}
}
override fun onBind(arg0: Intent): IBinder? {
return null
}
override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
Log.e(TAG, "onStartCommand")
super.onStartCommand(intent, flags, startId)
return Service.START_STICKY
}
override fun onCreate() {
Log.e(TAG, "onCreate")
initializeLocationManager()
try {
mLocationManager!!.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, LOCATION_INTERVAL.toLong(), LOCATION_DISTANCE,
mLocationListeners[1])
} catch (ex: java.lang.SecurityException) {
Log.i(TAG, "fail to request location update, ignore", ex)
} catch (ex: IllegalArgumentException) {
Log.d(TAG, "network provider does not exist, " + ex.message)
}
try {
mLocationManager!!.requestLocationUpdates(
LocationManager.GPS_PROVIDER, LOCATION_INTERVAL.toLong(), LOCATION_DISTANCE,
mLocationListeners[0])
} catch (ex: java.lang.SecurityException) {
Log.i(TAG, "fail to request location update, ignore", ex)
} catch (ex: IllegalArgumentException) {
Log.d(TAG, "gps provider does not exist " + ex.message)
}
}
override fun onDestroy() {
Log.e(TAG, "onDestroy")
super.onDestroy()
if (mLocationManager != null) {
for (i in mLocationListeners.indices) {
try {
mLocationManager!!.removeUpdates(mLocationListeners[i])
} catch (ex: Exception) {
Log.i(TAG, "fail to remove location listners, ignore", ex)
}
}
}
}
private fun initializeLocationManager() {
Log.e(TAG, "initializeLocationManager")
if (mLocationManager == null) {
mLocationManager = applicationContext.getSystemService(Context.LOCATION_SERVICE) as LocationManager
}
}
companion object {
private val TAG = "BOOMBOOMTESTGPS"
private val LOCATION_INTERVAL = 1000
private val LOCATION_DISTANCE = 0f
}
}
You can archive it with a Service and Alarm Manager, but be careful with this, because if you setup a high priority you gonna drain the battery of the phone, in other hand, you really need notify the location every minute? This is because the only way to see a considerably change of the user location, it's traveling in a car or train. I only ask, because that gonna depend of you app and the requirement of the tracking.
Well Create a class extending Service ,this service will contain your Location listener class(Fused Location Provider) purpose of this service is to get location periodically , something like this
public class LocationGetter extends Service {
......
public class MyLocationListener implements GooglePlayServicesClient.ConnectionCallbacks,GooglePlayServicesClient.OnConnectionFailedListener,LocationListener, com.google.android.gms.location.LocationListener {
//your fused Location provider code
}
......
}
Then create a class extending Broadcast Receiver , such that the purpose of this broadcast Receiver is to check whether service is alive if not restart service even during phone ON/OFF ....
register receiver in ur activity , listen for broadcasts , unregeister receiver depending ur need...
To get callback on LocationChange
Define an interface
public interface LocationCallback {
public void locationChanged(Location location);
}
Callback in your Activity
public static LocationCallback callback;
public void getUserLocation() {
callback = new LocationCallback() {
#Override
public void locationChanged(Location location) {
Toast.makeText(getApplicationContext(), location.getLatitude() + "," + location.getLongitude(), Toast.LENGTH_SHORT).show();
}
};
Intent service_intent = new Intent(this, GPSService.class);
startService(service_intent);
}
Change onLocationChange Method to
#Override
public void onLocationChanged(Location location) {
Log.e(TAG, "onLocationChanged: " + location);
MapsActivity.callback.locationChanged(location);
mLastLocation.set(location);
}
For Track the location every 10 mins(based on requirement) please follow this link
it is working fine without any issues
https://github.com/safetysystemtechnology/location-tracker-background
I'm trying to fetch geo location of the user when the app launches, i.e, during splash screen.
My approach is to get Geo location from a separate class using asynctask in main activity. I'm new to android, so I may be missing out on something. Here is the sample code which I have written to fetch user's geo location:
SplashScreenActivity.java (fetching geo location without intent-service)
package work.office;
import work.office.GeoLocationFinder.LocationResult;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.Menu;
public class SplashScreenActivity extends Activity {
private static final String TAG = "SplashScreenActivity";
private ProgressDialog pd = null;
private Object data = null;
LocationResult locationResult;
Location newLocation = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
new GetGeoLocationAsyncTask(getApplicationContext()).execute();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.splash_screen, menu);
return true;
}
private class GetGeoLocationAsyncTask extends
AsyncTask<Void, Integer, Location> {
private static final String TAG = "GetGeoLocationAsyncTask";
private Context ctx = null;
public GetGeoLocationAsyncTask(Context applicationContext) {
this.ctx = applicationContext;
}
#Override
protected void onPreExecute() {
pd = new ProgressDialog(SplashScreenActivity.this);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setTitle("Loading...");
pd.setMessage("Finding your geo location... Please wait");
pd.setCancelable(Boolean.FALSE);
pd.setIndeterminate(Boolean.TRUE);
pd.setMax(100);
pd.setProgress(0);
pd.show();
super.onPreExecute();
}
#Override
protected Location doInBackground(Void... params) {
LocationResult locationResult = new LocationResult() {
#Override
public void gotLocation(Location location) {
if (location != null) {
newLocation = new Location(location);
newLocation.set(location);
} else {
Log.d(TAG, "Location received is null");
}
}
};
GeoLocationFinder geoLocationFinder = new GeoLocationFinder();
geoLocationFinder.getLocation(this.ctx,
locationResult);
return newLocation;
}
#Override
protected void onPostExecute(Location result) {
super.onPostExecute(result);
if (result != null) {
Log.d(TAG,
"Got coordinates, congratulations. Longitude = "
+ result.getLongitude() + " Latitude = "
+ result.getLatitude());
} else {
Log.d(TAG, "Coordinates are null :(");
}
pd.dismiss();
}
}
}
GeoLocationFinder.java
package work.office;
import java.util.Timer;
import java.util.TimerTask;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
public class GeoLocationFinder {
private static final String TAG = "GeoLocationFinder";
Timer locationTimer;
LocationManager locationManager;
Location location;
private static final int min_update_time = 20000; // in msec
private static final int min_distance_for_update = 10; // in meters
LocationResult locationResult;
boolean gps_enabled = Boolean.FALSE;
boolean network_enabled = Boolean.FALSE;
public boolean getLocation(Context ctx, LocationResult result) {
locationResult = result;
if (locationManager == null) {
locationManager = (LocationManager) ctx
.getSystemService(Context.LOCATION_SERVICE);
}
try {
gps_enabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
} catch (Exception e) {
Log.d(TAG, "GPS enabled exception: " + e.getMessage());
}
try {
network_enabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch (Exception e) {
Log.d(TAG, "Network enabled exception: " + e.getMessage());
}
if (!gps_enabled && !network_enabled) {
Log.d(TAG, "You are doomed boy!!");
return Boolean.FALSE;
}
if (gps_enabled) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, min_update_time,
min_distance_for_update, locationListenerGps);
}
if (network_enabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, min_update_time,
min_distance_for_update, locationListenerNetwork);
}
locationTimer = new Timer();
locationTimer.schedule(new GetLastLocation(), 20000);
return Boolean.TRUE;
}
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
locationTimer.cancel();
locationResult.gotLocation(location);
locationManager.removeUpdates(this);
locationManager.removeUpdates(locationListenerGps);
}
#Override
public void onProviderDisabled(String provider) {
Log.d(TAG, "GPS provider disabled" + provider);
}
#Override
public void onProviderEnabled(String provider) {
Log.d(TAG, "GPS provider enabled" + provider);
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Log.d(TAG, "GPS status changed");
}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
locationTimer.cancel();
locationResult.gotLocation(location);
locationManager.removeUpdates(this);
locationManager.removeUpdates(locationListenerNetwork);
}
#Override
public void onProviderDisabled(String provider) {
Log.d(TAG, "Network provider disabled. " + provider);
}
#Override
public void onProviderEnabled(String provider) {
Log.d(TAG, "Network provider enabled. " + provider);
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Log.d(TAG, "Network status changed.");
}
};
private class GetLastLocation extends TimerTask {
#Override
public void run() {
locationManager.removeUpdates(locationListenerGps);
locationManager.removeUpdates(locationListenerNetwork);
Location net_loc = null, gps_loc = null;
if (gps_enabled) {
gps_loc = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
}
if (network_enabled) {
net_loc = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
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);
}
}
When i install this apk on my phone, I get this error: Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() (in SplashScreenActivity.java when in background thread I try to get location)
This question also mentions of the error but in my context I'm not able to link it. Could be because I have used SplashScreenActivity context in background thread. But how to rectify it? Also, what could be the best approach to find geo location during splash screen? Please help.
You are seriously overdoing it. The AsyncTask does not accomplish anything in this case. Here is the code simplified but still asynchronously getting the location:
package work.office;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.Menu;
public class SplashScreenActivity extends Activity {
private static final String TAG = "SplashScreenActivity";
private ProgressDialog pd = null;
private Object data = null;
GeoLocationFinder.LocationResult locationResult;
Location newLocation = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
setupLocation();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.splash_screen, menu);
return true;
}
private void setupLocation() {
pd = new ProgressDialog(SplashScreenActivity.this);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setTitle("Loading...");
pd.setMessage("Finding your geo location... Please wait");
pd.setCancelable(Boolean.FALSE);
pd.setIndeterminate(Boolean.TRUE);
pd.setMax(100);
pd.setProgress(0);
pd.show();
GeoLocationFinder.LocationResult locationResult = new GeoLocationFinder.LocationResult() {
#Override
public void gotLocation(Location location) {
if (location != null) {
newLocation = new Location(location);
newLocation.set(location);
Log.d(TAG,
"Got coordinates, congratulations. Longitude = "
+ newLocation.getLongitude() + " Latitude = "
+ newLocation.getLatitude());
pd.dismiss();
} else {
Log.d(TAG, "Location received is null");
}
}
};
GeoLocationFinder geoLocationFinder = new GeoLocationFinder();
geoLocationFinder.getLocation(this,
locationResult);
}
}