¿Cómo habilitar el acceso a la ubicación mediante programación en Android?

este problema se puede resolver de diferentes formas, pero te enseñamos la resolución más completa para nosotros.

Solución:

Utilice el siguiente código para comprobarlo. Si está deshabilitado, se generará un cuadro de diálogo

public void statusCheck() 
    final LocationManager manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

    if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) 
        buildAlertMessageNoGps();

    


private void buildAlertMessageNoGps() 
    final AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage("Your GPS seems to be disabled, do you want to enable it?")
            .setCancelable(false)
            .setPositiveButton("Yes", new DialogInterface.OnClickListener() 
                public void onClick(final DialogInterface dialog, final int id) 
                    startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
                
            )
            .setNegativeButton("No", new DialogInterface.OnClickListener() 
                public void onClick(final DialogInterface dialog, final int id) 
                    dialog.cancel();
                
            );
    final AlertDialog alert = builder.create();
    alert.show();

Puede probar estos métodos a continuación:

Para verificar si el GPS y el proveedor de red están habilitados:

public boolean canGetLocation() 
    boolean result = true;
    LocationManager lm;
    boolean gpsEnabled = false;
    boolean networkEnabled = false;

    lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

    // exceptions will be thrown if provider is not permitted.
    try 
        gpsEnabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
     catch (Exception ex) 
    

    try 
        networkEnabled = lm
                .isProviderEnabled(LocationManager.NETWORK_PROVIDER);
     catch (Exception ex) 
    

    return gpsEnabled && networkEnabled;

Diálogo de alerta si el código anterior regresa false:

public void showSettingsAlert() 
    AlertDialog.Builder alertDialog = new AlertDialog.Builder(this);

    // Setting Dialog Title
    alertDialog.setTitle("Error!");

    // Setting Dialog Message
    alertDialog.setMessage("Please ");

    // On pressing Settings button
    alertDialog.setPositiveButton(
            getResources().getString(R.string.button_ok),
            new DialogInterface.OnClickListener() 
                public void onClick(DialogInterface dialog, int which) 
                    Intent intent = new Intent(
                            Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                    startActivity(intent);
                
            );

    alertDialog.show();

Cómo utilizar los dos métodos anteriores:

if (canGetLocation())      
    //DO SOMETHING USEFUL HERE. ALL GPS PROVIDERS ARE CURRENTLY ENABLED                 
 else 
    //SHOW OUR SETTINGS ALERT, AND LET THE USE TURN ON ALL THE GPS PROVIDERS                                
    showSettingsAlert();

A continuación, se muestra una forma sencilla de habilitar ubicaciones mediante programación, como la aplicación Mapas:

protected void enableLocationSettings() 
       LocationRequest locationRequest = LocationRequest.create()
             .setInterval(LOCATION_UPDATE_INTERVAL)
             .setFastestInterval(LOCATION_UPDATE_FASTEST_INTERVAL)
             .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

        LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
                .addLocationRequest(locationRequest);

        LocationServices
                .getSettingsClient(this)
                .checkLocationSettings(builder.build())
                .addOnSuccessListener(this, (LocationSettingsResponse response) -> 
                    // startUpdatingLocation(...);
                )
                .addOnFailureListener(this, ex -> 
                    if (ex instanceof ResolvableApiException) 
                        // Location settings are NOT satisfied,  but this can be fixed  by showing the user a dialog.
                        try 
                            // Show the dialog by calling startResolutionForResult(),  and check the result in onActivityResult().
                            ResolvableApiException resolvable = (ResolvableApiException) ex;
                            resolvable.startResolutionForResult(TrackingListActivity.this, REQUEST_CODE_CHECK_SETTINGS);
                         catch (IntentSender.SendIntentException sendEx) 
                            // Ignore the error.
                        
                    
                );
 

Y onActivityResult:

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) 
    if (REQUEST_CODE_CHECK_SETTINGS == requestCode) 
        if(Activity.RESULT_OK == resultCode)
            //user clicked OK, you can startUpdatingLocation(...);

        else
            //user clicked cancel: informUserImportanceOfLocationAndPresentRequestAgain();
        
    

Puede ver la documentación aquí: https://developer.android.com/training/location/change-location-settings

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