Enable a system location dialog ,asking user that app needs to find the current location This dialog is from Android Settings API

public class LocationData implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {

    Context _context;
    Location latKnowLocation;
    static GoogleApiClient mGoogleApiClient;
    LocationInterface loIn;
    StartAct startAct;

    PendingResult result;

    //Location requests
    LocationRequest locationRequest = LocationRequest.create()
            .setInterval(10 * 60 * 1000) // every 10 minutes
            .setExpirationDuration(10 * 1000) // After 10 seconds
            .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

    LocationSettingsRequest.Builder builder;

    public LocationData(Context con) {

        _context = con;

        mGoogleApiClient = new GoogleApiClient.Builder(con.getApplicationContext())
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();

        mGoogleApiClient.connect();
        //initialize the builder and add location request paramenter like HIGH Aurracy
        builder = new LocationSettingsRequest.Builder()
                .addLocationRequest(locationRequest);
       // set builder to always true (Shows the dialog after never operation too)
        builder.setAlwaysShow(true);


       // Then check whether current location settings are satisfied:
        result =
                LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());

       }

    // call back for other class
    public void callbacksResults()
    {
        // call backs for lcoation status
        result.setResultCallback(new ResultCallback() {
            @Override
            public void onResult(LocationSettingsResult result) {
                final Status status = result.getStatus();
                final LocationSettingsStates state = result.getLocationSettingsStates();
                switch (status.getStatusCode()) {
                    case LocationSettingsStatusCodes.SUCCESS:
                        // All location settings are satisfied. The client can initialize location
                        // requests here.


                        if(mGoogleApiClient.isConnected())
                        {
                            latKnowLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);

                        }

                        break;
                    case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                        // Location settings are not satisfied. But could be fixed by showing the user
                        // a dialog.

                        try {

                             status.startResolutionForResult((Activity) _context, Constants.REQUEST_CHECK_SETTINGS);
                        } catch (IntentSender.SendIntentException e) {
                            e.printStackTrace();
                        }

                        break;
                    case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                        // Location settings are not satisfied. However, we have no way to fix the
                        // settings so we won't show the dialog.

                        break;
                }
            }
        });
    }


    // call back for other class
    public void callbacksResultsSplash()
    {
        // call backs for lcoation status
        result.setResultCallback(new ResultCallback() {
            @Override
            public void onResult(LocationSettingsResult result) {
                final Status status = result.getStatus();
                final LocationSettingsStates state = result.getLocationSettingsStates();
                switch (status.getStatusCode()) {
                    case LocationSettingsStatusCodes.SUCCESS:
                        // All location settings are satisfied. The client can initialize location
                        // requests here.
                        // start main Activity


                        break;
                    case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                        // Location settings are not satisfied. But could be fixed by showing the user
                        // a dialog.

                        try {

                            status.startResolutionForResult((Activity) _context, Constants.REQUEST_CHECK_SETTINGS);
                        } catch (IntentSender.SendIntentException e) {
                            e.printStackTrace();
                        }

                        break;
                    case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                        // Location settings are not satisfied. However, we have no way to fix the
                        // settings so we won't show the dialog.

                        break;
                }
            }
        });
    }


    @Override
    public void onConnected(Bundle bundle) {



    }



    @Override
    public void onConnectionSuspended(int i) {

        loIn.onConnectionSuspended();
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {

        loIn.onLocationFailed();
    }




}