Get current location during application launch

Question

Good afternoon! I am working on an Android application that controls the location of the user. I use LocationManager to get the location of the user using the following method

public void onLocationChanged(Location theLocation) {} 

Using the above method, whenever there is user movement, I get the location coordinates.

But now I plan to get the user's location immediately after entering the application. Is there any way through the LocationManager through which I can manually get the location coordinates after starting my application?

Answer 1

Use this technique:

 LocationManager locManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); boolean network_enabled = locManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); Location location; if(network_enabled){ location = locManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); if(location!=null){ longitude = location.getLongitude(); latitude = location.getLatitude(); } } 

In this case, you don’t even need to use GPS only on your mobile network.

Remember to make the following permission in the manifest:

 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> 

Answer 2

this is what i did ... 1) mainactiviy.java

 import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.View; import android.widget.Button; import android.widget.EditText; public class MainActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final Button gpsButton = (Button) findViewById(R.id.getloc); gpsButton.setOnClickListener(new Button.OnClickListener() { public void onClick(View v){ LoadCoords(); }}); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } public void LoadCoords(){ EditText locn = (EditText)findViewById(R.id.text1); EditText locn1 = (EditText)findViewById(R.id.text2); GPSTracker gps = new GPSTracker(this); if(gps.canGetLocation){ Double latPoint=gps.getLatitude(); Double lngPoint =gps.getLongitude(); locn.setText(latPoint.toString()); locn1.setText(lngPoint.toString()); } } } 

another file 2) GPSTracker.java

 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; 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; 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 = 10; // 10 meters // The minimum time between updates in milliseconds private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute // 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; // First get location from Network Provider 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; } 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; } @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; } 

if it works, answer ...

Answer 3

Try this code. Hope this will work

 import android.app.Activity; import android.content.Context; import android.location.Criteria; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.util.Log; import android.widget.Button; import android.widget.Toast; import com.google.android.maps.MapController; import com.google.android.maps.MapView; public class MainActivity extends Activity implements LocationListener { private LocationManager locationManager; private String provider; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); Criteria criteria = new Criteria(); provider = locationManager.getBestProvider(criteria, false); Location location = locationManager.getLastKnownLocation(provider); if (location != null) { System.out.println("Provider " + provider + " has been selected."); onLocationChanged(location); } else { System.out.println("Location not avilable"); } } protected void onResume() { super.onResume(); locationManager.requestLocationUpdates(provider, 400, 1, (LocationListener) this); } /* Remove the locationlistener updates when Activity is paused */ @Override protected void onPause() { super.onPause(); locationManager.removeUpdates((LocationListener) this); } public void onLocationChanged(Location location) { double lat = (double) (location.getLatitude()); double lng = (double) (location.getLongitude()); Toast.makeText(getApplicationContext(), lat+"----"+lng,Toast.LENGTH_LONG).show(); Log.i("Latitude------------", "Lattitude:" +lat); Log.i("Longitude-------------", "Longitude:" +lng); } @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 } } 

The required permission must be added.

Answer 4

  ActivityCompat.requestPermissions(MapsActivity.this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1); if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) { /* tvLatitud.setText("No se tienen permisos"); ... */ return; }else { locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); latitude = location.getLatitude(); longitude = location.getLongitude(); }