LBS 2018

MapsActivity.java

package com.ut.example.jaak.myapplication;

import android.annotation.SuppressLint;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.support.annotation.NonNull;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.widget.Toast;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.TileOverlay;
import com.google.android.gms.maps.model.TileOverlayOptions;
import com.google.android.gms.maps.model.TileProvider;
import com.google.android.gms.maps.model.UrlTileProvider;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;
import java.util.Locale;

public class MapsActivity extends FragmentActivity implements
        OnMapReadyCallback, GoogleMap.OnMyLocationButtonClickListener,
        GoogleMap.OnMyLocationClickListener {

    private GoogleMap mMap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
    }


    /**
     * Manipulates the map once available.
     * This callback is triggered when the map is ready to be used.
     * This is where we can add markers or lines, add listeners or move the camera. In this case,
     * we just add a marker near Sydney, Australia.
     * If Google Play services is not installed on the device, the user will be prompted to install
     * it inside the SupportMapFragment. This method will only be triggered once the user has
     * installed Google Play services and returned to the app.
     */
    @SuppressLint("MissingPermission")
    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);

        // Add a marker in Sydney and move the camera
        LatLng tartu = new LatLng(58.3779, 26.729);
        mMap.addMarker(new MarkerOptions().position(tartu).title("Marker in Sydney"));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(tartu));
        mMap.moveCamera(CameraUpdateFactory.zoomTo(14));

        mMap.setMyLocationEnabled(true);
        mMap.setOnMyLocationButtonClickListener(this);
        mMap.setOnMyLocationClickListener(this);


        TileProvider tileProvider = new UrlTileProvider(256, 256) {
            @Override
            public URL getTileUrl(int x, int y, int zoom) {

                /* Define the URL pattern for the tile images */
                String s = String.format("http://tiles.maaamet.ee/tm/tms/1.0.0/kaart@GMC/%d/%d/%d.png",
                         zoom, x, (1 << zoom) - 1 - y);

                if (!checkTileExists(x, y, zoom)) {
                    return null;
                }

                try {
                    return new URL(s);
                } catch (MalformedURLException e) {
                    throw new AssertionError(e);
                }

            }


            /*
             * Check that the tile server supports the requested x, y and zoom.
             * Complete this stub according to the tile range you support.
             * If you support a limited range of tiles at different zoom levels, then you
             * need to define the supported x, y range at each zoom level.
             */
            private boolean checkTileExists(int x, int y, int zoom) {
                int minZoom = 12;
                int maxZoom = 18;

                if ((zoom < minZoom || zoom > maxZoom)) {
                    return false;
                }

                return true;
            }
        };

        TileOverlay tileOverlay = mMap.addTileOverlay(new TileOverlayOptions()
                .tileProvider(tileProvider));

    }

    @Override
    public boolean onMyLocationButtonClick() {
        Toast.makeText(this, "MyLocation button clicked", Toast.LENGTH_SHORT).show();
        return false;
    }

    @Override
    public void onMyLocationClick(@NonNull Location location) {
        Geocoder geocoder = new Geocoder(this, Locale.JAPANESE);

        try {
            List<Address> addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);

            if (addresses.size() > 0) {
                Address fetchedAddress = addresses.get(0);
                StringBuilder strAddress = new StringBuilder();
                for (int i = 0; i <= fetchedAddress.getMaxAddressLineIndex(); i++) {
                    strAddress.append(fetchedAddress.getAddressLine(i)).append(" ");
                }

                Toast.makeText(this, "Current location:\n" + strAddress.toString(), Toast.LENGTH_LONG).show();

            } else {
                Toast.makeText(this, "Current location (No address):\n" + location, Toast.LENGTH_LONG).show();
            }

        } catch (IOException e) {
            e.printStackTrace();
            Toast.makeText(this, "Current location (Ex):\n" + location, Toast.LENGTH_LONG).show();
        }

    }
}