LOCATIONS

MapsActivity.java

 

import android.content.Context;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Locale;

public class MapsActivity extends FragmentActivity implements UpdateCarga {

    private List<Entrega> entregas = new ArrayList<>(0);

    private Location minhaPosicao = null;


    private ListView entragasView;

    private LoaderAddres loaderAddres = null;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);

        minhaPosicao = new Location("MYPosition");
        minhaPosicao.setLatitude(-25.380316);
        minhaPosicao.setLongitude(-49.273235);


        Entrega entrega = new Entrega();
        entrega.lat = -25.395773;
        entrega.lon = -49.235632;

        entregas.add(entrega);

        entrega = new Entrega();
        entrega.lat = -25.385666;
        entrega.lon = -49.233141;

        entregas.add(entrega);

        entrega = new Entrega();
        entrega.lat = -25.362550;
        entrega.lon = -49.253930;
        entregas.add(entrega);

        entragasView = ListView.class.cast(findViewById(R.id.entragasView));


    }


    @Override
    protected void onResume() {
        super.onResume();
        loaderAddres = new LoaderAddres(entregas, minhaPosicao, this);
        loaderAddres.execute();

    }

    @Override
    public void update() {
        if (loaderAddres != null) {
            entregas = loaderAddres.entregas;


            Collections.sort(entregas, new Comparator<Entrega>() {
                @Override
                public int compare(Entrega o1, Entrega o2) {
                    final Double aDouble = o2.distancia - o1.distancia;
                    return aDouble.intValue();
                }
            });


            final EntregaAdapter entregaAdapter = new EntregaAdapter(getApplicationContext());
            entragasView.setAdapter(entregaAdapter);
        }
    }

    class EntregaAdapter extends ArrayAdapter<Entrega> {

        private final LayoutInflater layoutInflater;

        public EntregaAdapter(@NonNull Context context) {
            super(context, R.layout.line);
            this.layoutInflater = LayoutInflater.from(context);
        }

        @Override
        public int getCount() {
            return entregas.size();
        }

        @Nullable
        @Override
        public Entrega getItem(int position) {
            return entregas.get(position);
        }

        @NonNull
        @Override
        public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
            final View view = layoutInflater.inflate(R.layout.line, parent, false);
            final Entrega entrega = entregas.get(position);
            TextView.class.cast(view.findViewById(R.id.posicao)).setText(String.format("Posição [%d]", position));
            TextView.class.cast(view.findViewById(R.id.endereco)).setText(String.format("Endereço: %s", entrega.endereco));
            TextView.class.cast(view.findViewById(R.id.distancia)).setText(String.format("Distancia: %s Km", entrega.distancia.toString()));
            return view;
        }
    }

    class LoaderAddres extends AsyncTask<Void, Void, Void> {

        private final List<Entrega> entregas;
        private final Location myLocation;
        private final UpdateCarga notifyUpdate;


        LoaderAddres(final List<Entrega> entregas, final Location myLocation, final UpdateCarga notifyUpdate) {
            this.entregas = entregas;
            this.myLocation = myLocation;
            this.notifyUpdate = notifyUpdate;
        }

        @Override
        protected Void doInBackground(Void... voids) {

            for (final Entrega entrega : entregas) {
                entrega.distancia = Utils.distance(myLocation.getLatitude(), myLocation.getLongitude(), entrega.lat, entrega.lon);
                entrega.endereco = ConvertPointToLocation(String.valueOf(entrega.lat), String.valueOf(entrega.lon));
            }
            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            if (null != notifyUpdate) {
                notifyUpdate.update();
            }
        }

        public String ConvertPointToLocation(final String Latitude, final String Longitude) {
            StringBuilder addressStr = new StringBuilder();
            try {
                Geocoder geoCoder = new Geocoder(getApplicationContext(), new Locale("pt", "BR"));
                final List<Address> addresses = geoCoder.getFromLocation(Float.parseFloat(Latitude), Float.parseFloat(Longitude), 1);
                if (addresses.size() > 0) {

                    final Address address = addresses.get(0);

//                    addressStr.append(address.getLocality());
//                    addressStr.append(" - ");
//                    addressStr.append(address.getAdminArea());
//                    addressStr.append(" - ");
//                    addressStr.append(address.getFeatureName());
//                    addressStr.append(" - ");
//                    addressStr.append(address.getPostalCode());
//                    addressStr.append(" - ");
//                    addressStr.append(address.getPremises());
//                    addressStr.append(" - ");
                    addressStr.append(address.getAddressLine(0));

//                    addressStr = addresses.get(0).getLocality() + " " + addresses.get(0).getCountryName();
//                        address = addresses.get(0).getLocality() ;
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            return addressStr.toString();
        }
    }


}

Utils.java

/**
 * Created by thiago.domacoski on 05/01/18.
 */

public class Utils {


    public static  double distance(double lat1, double lon1,  double lat2, double lon2) {
        double theta = lon1 - lon2;
        double dist = Math.sin(deg2rad(lat1))
                * Math.sin(deg2rad(lat2))
                + Math.cos(deg2rad(lat1))
                * Math.cos(deg2rad(lat2))
                * Math.cos(deg2rad(theta));
        dist = Math.acos(dist);
        dist = rad2deg(dist);
        dist = dist * 60 * 1.1515;
        return round(dist, 2);
    }

    private static double deg2rad(double deg) {
        return (deg * Math.PI / 180.0);
    }

    private static double rad2deg(double rad) {
        return (rad * 180.0 / Math.PI);
    }


    public static double round(double value, int places) {
        if (places < 0) throw new IllegalArgumentException();

        BigDecimal bd = new BigDecimal(value);
        bd = bd.setScale(places, RoundingMode.HALF_UP);
        return bd.doubleValue();
    }

}