Réponses:
Utilisez le LocationManager.
LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
double longitude = location.getLongitude();
double latitude = location.getLatitude();
L'appel à getLastKnownLocation()ne bloque pas - ce qui signifie qu'il reviendra nullsi aucune position n'est actuellement disponible - donc vous voudrez probablement jeter un oeil à passer a LocationListenerà la requestLocationUpdates()méthode à la place, ce qui vous donnera des mises à jour asynchrones de votre emplacement.
private final LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
longitude = location.getLongitude();
latitude = location.getLatitude();
}
}
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 10, locationListener);
Vous devrez donner l' ACCESS_FINE_LOCATIONautorisation à votre application si vous souhaitez utiliser le GPS.
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />Vous pouvez également ajouter l' ACCESS_COARSE_LOCATIONautorisation lorsque le GPS n'est pas disponible et sélectionnez votre fournisseur de localisation avec la getBestProvider()méthode .
Voici la classe LocationFinderpour trouver la position GPS. Cette classe appellera MyLocation, ce qui fera l'affaire.
EmplacementFinder
public class LocationFinder extends Activity {
int increment = 4;
MyLocation myLocation = new MyLocation();
// private ProgressDialog dialog;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.intermediat);
myLocation.getLocation(getApplicationContext(), locationResult);
boolean r = myLocation.getLocation(getApplicationContext(),
locationResult);
startActivity(new Intent(LocationFinder.this,
// Nearbyhotelfinder.class));
GPSMyListView.class));
finish();
}
public LocationResult locationResult = new LocationResult() {
@Override
public void gotLocation(Location location) {
// TODO Auto-generated method stub
double Longitude = location.getLongitude();
double Latitude = location.getLatitude();
Toast.makeText(getApplicationContext(), "Got Location",
Toast.LENGTH_LONG).show();
try {
SharedPreferences locationpref = getApplication()
.getSharedPreferences("location", MODE_WORLD_READABLE);
SharedPreferences.Editor prefsEditor = locationpref.edit();
prefsEditor.putString("Longitude", Longitude + "");
prefsEditor.putString("Latitude", Latitude + "");
prefsEditor.commit();
System.out.println("SHARE PREFERENCE ME PUT KAR DIYA.");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
// handler for the background updating
}
Ma position
public class MyLocation {
Timer timer1;
LocationManager lm;
LocationResult locationResult;
boolean gps_enabled=false;
boolean network_enabled=false;
public boolean getLocation(Context context, LocationResult result)
{
//I use LocationResult callback class to pass location value from MyLocation to user code.
locationResult=result;
if(lm==null)
lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
//exceptions will be thrown if provider is not permitted.
try{gps_enabled=lm.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){}
try{network_enabled=lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}
//Toast.makeText(context, gps_enabled+" "+network_enabled, Toast.LENGTH_LONG).show();
//don't start listeners if no provider is enabled
if(!gps_enabled && !network_enabled)
return false;
if(gps_enabled)
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
if(network_enabled)
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
timer1=new Timer();
timer1.schedule(new GetLastLocation(), 10000);
// Toast.makeText(context, " Yaha Tak AAya", Toast.LENGTH_LONG).show();
return true;
}
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerNetwork);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerGps);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
class GetLastLocation extends TimerTask {
@Override
public void run() {
//Context context = getClass().getgetApplicationContext();
Location net_loc=null, gps_loc=null;
if(gps_enabled)
gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(network_enabled)
net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//if there are both values use the latest one
if(gps_loc!=null && net_loc!=null){
if(gps_loc.getTime()>net_loc.getTime())
locationResult.gotLocation(gps_loc);
else
locationResult.gotLocation(net_loc);
return;
}
if(gps_loc!=null){
locationResult.gotLocation(gps_loc);
return;
}
if(net_loc!=null){
locationResult.gotLocation(net_loc);
return;
}
locationResult.gotLocation(null);
}
}
public static abstract class LocationResult{
public abstract void gotLocation(Location location);
}
}
Les googlechoses changent très souvent: aucune des réponses précédentes n'a fonctionné pour moi.
basé sur cette formation google, voici comment vous le faites en utilisant
fournisseur d'emplacement fusionné
cela nécessite la configuration des services Google Play
Classe d'activité
public class GPSTrackerActivity extends AppCompatActivity implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
private GoogleApiClient mGoogleApiClient;
Location mLastLocation;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
}
protected void onStart() {
mGoogleApiClient.connect();
super.onStart();
}
protected void onStop() {
mGoogleApiClient.disconnect();
super.onStop();
}
@Override
public void onConnected(Bundle bundle) {
try {
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation != null) {
Intent intent = new Intent();
intent.putExtra("Longitude", mLastLocation.getLongitude());
intent.putExtra("Latitude", mLastLocation.getLatitude());
setResult(1,intent);
finish();
}
} catch (SecurityException e) {
}
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
}usage
dans ton activité
Intent intent = new Intent(context, GPSTrackerActivity.class);
startActivityForResult(intent,1);Et cette méthode
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == 1){
Bundle extras = data.getExtras();
Double longitude = extras.getDouble("Longitude");
Double latitude = extras.getDouble("Latitude");
}
}vous pouvez obtenir la latlng actuelle en utilisant ceci
»
public class MainActivity extends ActionBarActivity {
private LocationManager locationManager;
private String provider;
private MyLocationListener mylistener;
private Criteria criteria;
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// Define the criteria how to select the location provider
criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_COARSE); //default
// user defines the criteria
criteria.setCostAllowed(false);
// get the best provider depending on the criteria
provider = locationManager.getBestProvider(criteria, false);
// the last known location of this provider
Location location = locationManager.getLastKnownLocation(provider);
mylistener = new MyLocationListener();
if (location != null) {
mylistener.onLocationChanged(location);
} else {
// leads to the settings because there is no last known location
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
// location updates: at least 1 meter and 200millsecs change
locationManager.requestLocationUpdates(provider, 200, 1, mylistener);
String a=""+location.getLatitude();
Toast.makeText(getApplicationContext(), a, 222).show();
}
private class MyLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location location) {
// Initialize the location fields
Toast.makeText(MainActivity.this, ""+location.getLatitude()+location.getLongitude(),
Toast.LENGTH_SHORT).show()
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Toast.makeText(MainActivity.this, provider + "'s status changed to "+status +"!",
Toast.LENGTH_SHORT).show();
}
@Override
public void onProviderEnabled(String provider) {
Toast.makeText(MainActivity.this, "Provider " + provider + " enabled!",
Toast.LENGTH_SHORT).show();
}
@Override
public void onProviderDisabled(String provider) {
Toast.makeText(MainActivity.this, "Provider " + provider + " disabled!",
Toast.LENGTH_SHORT).show();
}
} »
Les solutions ci-dessus sont également correctes, mais un certain temps, si l'emplacement est nul, l'application plante ou ne fonctionne pas correctement. La meilleure façon d'obtenir la latitude et la longitude d'Android est:
Geocoder geocoder;
String bestProvider;
List<Address> user = null;
double lat;
double lng;
LocationManager lm = (LocationManager) activity.getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
bestProvider = lm.getBestProvider(criteria, false);
Location location = lm.getLastKnownLocation(bestProvider);
if (location == null){
Toast.makeText(activity,"Location Not found",Toast.LENGTH_LONG).show();
}else{
geocoder = new Geocoder(activity);
try {
user = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
lat=(double)user.get(0).getLatitude();
lng=(double)user.get(0).getLongitude();
System.out.println(" DDD lat: " +lat+", longitude: "+lng);
}catch (Exception e) {
e.printStackTrace();
}
}Le meilleur moyen est
Ajouter un fichier manifeste d'autorisation
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>Ensuite, vous pouvez obtenir la localisation GPS ou si la localisation GPS n'est pas disponible, cette fonction renvoie la localisation RÉSEAU
public static Location getLocationWithCheckNetworkAndGPS(Context mContext) {
LocationManager lm = (LocationManager)
mContext.getSystemService(Context.LOCATION_SERVICE);
assert lm != null;
isGpsEnabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkLocationEnabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
Location networkLoacation = null, gpsLocation = null, finalLoc = null;
if (isGpsEnabled)
if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return null;
}gpsLocation = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (isNetworkLocationEnabled)
networkLoacation = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (gpsLocation != null && networkLoacation != null) {
//smaller the number more accurate result will
if (gpsLocation.getAccuracy() > networkLoacation.getAccuracy())
return finalLoc = networkLoacation;
else
return finalLoc = gpsLocation;
} else {
if (gpsLocation != null) {
return finalLoc = gpsLocation;
} else if (networkLoacation != null) {
return finalLoc = networkLoacation;
}
}
return finalLoc;
}C'est une vieille question et la plupart des réponses sont dépassées. Voici comment je fais mes applications maintenant:
Cette classe aide à suivre l'emplacement de l'appareil et à renvoyer la liste des adresses de l'appareil à l'aide du géocodage. Mettez-le dans une classe util
import android.Manifest
import android.app.AlertDialog
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.location.*
import android.os.Bundle
import android.provider.Settings
import android.util.Log
import androidx.core.app.ActivityCompat
import com.bmw.weatherapp.R
import kotlinx.coroutines.*
import java.io.IOException
import java.lang.ref.WeakReference
import java.util.*
import kotlin.coroutines.CoroutineContext
/**
* Use GPS or Network Provider to get Device Location
*/
class DeviceLocationTracker(context: Context, deviceLocationListener: DeviceLocationListener) : LocationListener, CoroutineScope {
private var deviceLocation: Location? = null
private val context: WeakReference<Context>
private var locationManager: LocationManager? = null
private var deviceLocationListener: DeviceLocationListener
private val job = Job()
override val coroutineContext: CoroutineContext
get() = job + Dispatchers.Main
init {
this.context = WeakReference(context)
this.deviceLocationListener = deviceLocationListener
initializeLocationProviders()
}
private fun initializeLocationProviders() {
//Init Location Manger if not already initialized
if (null == locationManager) {
locationManager = context.get()
?.getSystemService(Context.LOCATION_SERVICE) as LocationManager
}
locationManager?.apply {
// flag for GPS status
val isGPSEnabled = isProviderEnabled(LocationManager.GPS_PROVIDER)
// flag for network status
val isNetworkEnabled = isProviderEnabled(LocationManager.PASSIVE_PROVIDER)
//If we have permission
if (ActivityCompat.checkSelfPermission(context.get()!!, Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED &&
ActivityCompat.checkSelfPermission(context.get()!!, Manifest.permission.ACCESS_COARSE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
//First Try GPS
if (isGPSEnabled) {
requestLocationUpdates(
LocationManager.GPS_PROVIDER,
UPDATE_FREQUENCY_TIME,
UPDATE_FREQUENCY_DISTANCE.toFloat(), this@DeviceLocationTracker)
deviceLocation = locationManager!!.getLastKnownLocation(LocationManager.GPS_PROVIDER)
} else {
// Show alert to open GPS
context.get()?.apply {
AlertDialog.Builder(this)
.setTitle(getString(R.string.title_enable_gps))
.setMessage(getString(R.string.desc_enable_gps))
.setPositiveButton(getString(R.string.btn_settings)
) { dialog, which ->
val intent = Intent(
Settings.ACTION_LOCATION_SOURCE_SETTINGS)
startActivity(intent)
}.setNegativeButton(getString(R.string.btn_cancel))
{ dialog, which -> dialog.cancel() }.show()
}
}
//If failed try using NetworkManger
if(null==deviceLocation && isNetworkEnabled) {
requestLocationUpdates(
LocationManager.PASSIVE_PROVIDER,
0, 0f,
this@DeviceLocationTracker)
deviceLocation = locationManager!!.getLastKnownLocation(LocationManager.NETWORK_PROVIDER)
}
}
}
}
/**
* Stop using GPS listener
* Must call this function to stop using GPS
*/
fun stopUpdate() {
if (locationManager != null) {
locationManager!!.removeUpdates(this@DeviceLocationTracker)
}
}
override fun onLocationChanged(newDeviceLocation: Location) {
deviceLocation = newDeviceLocation
launch(Dispatchers.Main) {
withContext(Dispatchers.IO) {
var addressList: List<Address?>? = null
try {
addressList = Geocoder(context.get(),
Locale.ENGLISH).getFromLocation(
newDeviceLocation.latitude,
newDeviceLocation.longitude,
1)
deviceLocationListener.onDeviceLocationChanged(addressList)
Log.i(TAG, "Fetch address list"+addressList)
} catch (e: IOException) {
Log.e(TAG, "Failed Fetched Address List")
}
}
}
}
override fun onProviderDisabled(provider: String) {}
override fun onProviderEnabled(provider: String) {}
override fun onStatusChanged(provider: String, status: Int, extras: Bundle) {}
interface DeviceLocationListener {
fun onDeviceLocationChanged(results: List<Address>?)
}
companion object {
// The minimum distance to change Updates in meters
private const val UPDATE_FREQUENCY_DISTANCE: Long = 1 // 10 meters
// The minimum time between updates in milliseconds
private const val UPDATE_FREQUENCY_TIME: Long = 1 // 1 minute
private val TAG = DeviceLocationTracker::class.java.simpleName
}
}Ajouter des chaînes pour la boîte de dialogue d'alerte au cas où le GPS est désactivé
<string name="title_enable_gps">Enable GPS</string>
<string name="desc_enable_gps">GPS is not enabled. Do you want to go to settings menu?</string>
<string name="btn_settings">Open Settings</string>
<string name="btn_cancel">Cancel</string>Ajoutez ces autorisations dans votre manifeste Android et demandez-les au démarrage de l'application
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_GPS" />
<uses-permission android:name="android.permission.ACCESS_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />Usage
Implémenter DeviceLocationListenerdans votre Activity/Fragmentclasse
class MainActivity : AppCompatActivity, DeviceLocationTracker.DeviceLocationListener {
Ignorer le onDeviceLocationChangedrappel. Vous obtiendrez l'emplacement actuel dansonDeviceLocationChanged
override fun onDeviceLocationChanged(results: List<Address>?) {
val currntLocation = results?.get(0);
currntLocation?.apply {
currentlLat = latitude
currentLng = longitude
Country = countryCode
cityName = getAddressLine(0)
}
}Pour commencer le suivi, créez un DeviceLocationTrackerobjet dans la onCreateméthode de votre. Passez le Activitycomme Contexte et ceci comme DeviceLocationListener.
private lateinit var deviceLocationTracker: DeviceLocationTracker
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
...
deviceLocationTracker= DeviceLocationTracker(this, this)Voilà, vous allez maintenant commencer à obtenir la mise à jour de l'emplacement onDeviceLocationChanged.