Comment implémenter le LocationListener?

Question

Voici mon code source pour obtenir la longitude et la latitude, mais comment puis-je implémenter l'instruction dans le Location Listener, je suis nouveau dans ce domaine, j'ai vraiment besoin d'aide, s'il vous plaît veuillez offrir votre aide, merci.

public class Location extends AppCompatActivity{ 

    LocationManager locationManager=(LocationManager)getSystemService(LOCATION_SERVICE); 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_location); 
     isLocationEnabled(); 

    } 

    LocationListener locationListenerGPS=new LocationListener() { 
     @Override 
     public void onLocationChanged(android.location.Location location) { 
      double latitude=location.getLatitude(); 
      double longitude=location.getLongitude(); 
      String msg="New Latitude: "+latitude + "New Longitude: "+longitude; 
      Toast.makeText(getBaseContext(),msg,Toast.LENGTH_LONG).show(); 
     } 

     @Override 
     public void onStatusChanged(String provider, int status, Bundle extras) { 

     } 

     @Override 
     public void onProviderEnabled(String provider) { 

     } 

     @Override 
     public void onProviderDisabled(String provider) { 

     } 
    }; 


    protected void onResume(){ 
     super.onResume(); 
     isLocationEnabled(); 
    } 

    private void isLocationEnabled() { 

     if(!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){ 
      AlertDialog.Builder alertDialog=new AlertDialog.Builder(this); 
      alertDialog.setTitle("Enable Location"); 
      alertDialog.setMessage("Your locations setting is not enabled. Please enabled it in settings menu."); 
      alertDialog.setPositiveButton("Location Settings", new DialogInterface.OnClickListener(){ 
       public void onClick(DialogInterface dialog, int which){ 
        Intent intent=new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
        startActivity(intent); 
       } 
      }); 
      alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener(){ 
       public void onClick(DialogInterface dialog, int which){ 
        dialog.cancel(); 
       } 
      }); 
      AlertDialog alert=alertDialog.create(); 
      alert.show(); 
     } 
     else{ 
      AlertDialog.Builder alertDialog=new AlertDialog.Builder(this); 
      alertDialog.setTitle("Confirm Location"); 
      alertDialog.setMessage("Your Location is enabled, please enjoy"); 
      alertDialog.setNegativeButton("Back to interface",new DialogInterface.OnClickListener(){ 
       public void onClick(DialogInterface dialog, int which){ 
        dialog.cancel(); 
       } 
      }); 
      AlertDialog alert=alertDialog.create(); 
      alert.show(); 
     } 
    } 

} 

Answer 1

Il suffit d'utiliser ce code:

public class Location extends AppCompatActivity { 
    LocationManager locationManager; 
    Context mContext; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_location); 
     mContext=this; 
     locationManager=(LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE); 
     locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 
       2000, 
       10, locationListenerGPS); 
     isLocationEnabled(); 

    } 

    LocationListener locationListenerGPS=new LocationListener() { 
     @Override 
     public void onLocationChanged(android.location.Location location) { 
      double latitude=location.getLatitude(); 
      double longitude=location.getLongitude(); 
      String msg="New Latitude: "+latitude + "New Longitude: "+longitude; 
      Toast.makeText(mContext,msg,Toast.LENGTH_LONG).show(); 
     } 

     @Override 
     public void onStatusChanged(String provider, int status, Bundle extras) { 

     } 

     @Override 
     public void onProviderEnabled(String provider) { 

     } 

     @Override 
     public void onProviderDisabled(String provider) { 

     } 
    }; 


    protected void onResume(){ 
     super.onResume(); 
     isLocationEnabled(); 
    } 

    private void isLocationEnabled() { 

     if(!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){ 
      AlertDialog.Builder alertDialog=new AlertDialog.Builder(mContext); 
      alertDialog.setTitle("Enable Location"); 
      alertDialog.setMessage("Your locations setting is not enabled. Please enabled it in settings menu."); 
      alertDialog.setPositiveButton("Location Settings", new DialogInterface.OnClickListener(){ 
       public void onClick(DialogInterface dialog, int which){ 
        Intent intent=new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
        startActivity(intent); 
       } 
      }); 
      alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener(){ 
       public void onClick(DialogInterface dialog, int which){ 
        dialog.cancel(); 
       } 
      }); 
      AlertDialog alert=alertDialog.create(); 
      alert.show(); 
     } 
     else{ 
      AlertDialog.Builder alertDialog=new AlertDialog.Builder(mContext); 
      alertDialog.setTitle("Confirm Location"); 
      alertDialog.setMessage("Your Location is enabled, please enjoy"); 
      alertDialog.setNegativeButton("Back to interface",new DialogInterface.OnClickListener(){ 
       public void onClick(DialogInterface dialog, int which){ 
        dialog.cancel(); 
       } 
      }); 
      AlertDialog alert=alertDialog.create(); 
      alert.show(); 
     } 
    } 
} 


The parameters of requestLocationUpdates methods are as follows: 

provider: the name of the provider with which we would like to register. 
minTime: minimum time interval between location updates (in milliseconds). 
minDistance: minimum distance between location updates (in meters). 
listener: a LocationListener whose onLocationChanged(Location) method will be called for each location update. 


Permissions: 

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

Add above permissions to manifest file for the version lower than lollipop and for marshmallow and higher version use runtime permission.