Kotlin - Issue in getting location from Network provider

Question

I must have to take location from the user device in my Android application.

I have done something as below :

First, I have checked for the Runtime Location Permissions. Taken successfully.

Second, Checking that GPS is enabled or not and if GPS PROVIDER is working fine, am able to fetch latitude and longitude from the GPS Provider.

Third, If GPS is off, am trying to get location from the NETWORK Provider. But, in this case sometimes am not able fetch location successfully.

So, I must have let the user to turn the GPS on and have to get the location after turning on the GPS.

I am confused because many demos provides INTENTS for turning the GPS on. How can I turn the GPS on dynamically ? How can I get notified that user turned on the GPS?

Thanks.

Answer 1

Here is the Gradle plugin, In my case, it was version: '17.0.0'

implementation "com.google.android.gms:play-services-location:$parent.ext.playServicesVersion"

And Here is the GpsUtils Class,

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.IntentSender;
import android.location.LocationManager;
import android.util.Log;
import android.widget.Toast;

import androidx.annotation.NonNull;

import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.common.api.ResolvableApiException;
import com.google.android.gms.location.LocationRequest;
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.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;

public class GpsUtils {

    private Context context;
    private SettingsClient mSettingsClient;
    private LocationSettingsRequest mLocationSettingsRequest;
    private LocationManager locationManager;
    private static final String TAG = GpsUtils.class.getSimpleName();

    public GpsUtils(Context context) {

        this.context = context;
        locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
        mSettingsClient = LocationServices.getSettingsClient(context);

        LocationRequest locationRequest = LocationRequest.create();
        locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        locationRequest.setInterval(2 * 1000);
        locationRequest.setFastestInterval(2 * 1000);
        LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
                .addLocationRequest(locationRequest);
        mLocationSettingsRequest = builder.build();

        //**************************
        builder.setAlwaysShow(true); //this is the key ingredient
        //**************************
    }

    // method for turn on GPS
    public void turnGPSOn(onGpsListener onGpsListener) {

        if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            if (onGpsListener != null) {
                onGpsListener.gpsStatus(true);
            }
        } else {
            mSettingsClient
                    .checkLocationSettings(mLocationSettingsRequest)
                    .addOnSuccessListener((Activity) context, new OnSuccessListener<LocationSettingsResponse>() {
                        @SuppressLint("MissingPermission")
                        @Override
                        public void onSuccess(LocationSettingsResponse locationSettingsResponse) {

                            //  GPS is already enable, callback GPS status through listener
                            if (onGpsListener != null) {
                                onGpsListener.gpsStatus(true);
                            }
                        }
                    })
                    .addOnFailureListener((Activity) context, new OnFailureListener() {
                        @Override
                        public void onFailure(@NonNull Exception e) {
                            int statusCode = ((ApiException) e).getStatusCode();
                            switch (statusCode) {
                                case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:

                                    try {
                                        ResolvableApiException rae = (ResolvableApiException) e;
                                        rae.startResolutionForResult((Activity) context, Appconstants.GPS_REQUEST);
                                    } catch (IntentSender.SendIntentException sie) {
                                        Log.i(TAG, "PendingIntent unable to execute request.");
                                    }
                                    break;
                                case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                                    String errorMessage = "Location settings are inadequate, and cannot be " +
                                        "fixed here. Fix in Settings.";

                                    Toast.makeText((Activity) context, errorMessage, Toast.LENGTH_LONG).show();
                            }
                        }
                    });
        }
    }

    public interface onGpsListener {
        void gpsStatus(boolean isGPSEnable);
    }
}

and you can call the below function from your activity to let the user enable GPS. I kept GPSUtils class in java itself as it is interoperable.

  GpsUtils(this).turnGPSOn { isGPSEnable ->
                isGPS = isGPSEnable  // You can get the callback here..
            }

You can read more about SettingsClient from here.