/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
import java.io.IOException;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.location.*;

/**
 * @author Mr.Trinh
 */
public class JMidlet extends MIDlet implements CommandListener,LocationListener{
    private double lat,lon;
    private LocationProvider locationProvider;
    private Criteria cr;
    private Location location;
    private Coordinates coordinates;
    private Command exitCommand,refreshCommand; // The exit command
    private Display display;    // The display for this MIDlet
    private Form mForm;          // The main form to display
    private Image map;
    private ImageItem GGmap;

    public JMidlet (){
        display = Display.getDisplay(this);
        exitCommand = new Command("Exit", Command.EXIT, 0);
        refreshCommand = new Command("Refresh", Command.OK, 1);
    }
    public void startApp() {
        mForm = new Form("Google Maps");
        mForm.addCommand(exitCommand);
        mForm.addCommand(refreshCommand);
        mForm.setCommandListener(this);
        display.setCurrent(mForm);
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }

    public void commandAction(Command c, Displayable d) {
        if (c == exitCommand) {
            destroyApp(false);
            notifyDestroyed();
        }
        if(c== refreshCommand){
            cr = new Criteria();
            cr.setHorizontalAccuracy(500);
            try {
                locationProvider = LocationProvider.getInstance(cr);
            } catch (LocationException ex) {
                ex.printStackTrace();
            }
            try {
                location = locationProvider.getLocation(40);
            } catch (InterruptedException ex) {
                ex.printStackTrace();
            } catch (LocationException ex) {
                ex.printStackTrace();
            }
            coordinates =location.getQualifiedCoordinates();
            lat = coordinates.getLatitude();
            lon = coordinates.getLongitude();
            GoogleMaps gMap = new GoogleMaps("API_KEY");
            try {
                map = gMap.retrieveStaticImage(340,240,lat,lon, 14, "satellite","jpg");
            } catch (IOException ex) {
                ex.printStackTrace();
            }
            GGmap = new ImageItem(null,map,ImageItem.LAYOUT_CENTER,null);
            mForm.deleteAll();
            mForm.append(GGmap);
            display.setCurrent(mForm);
        }
    }

    public void locationUpdated(LocationProvider arg0, Location arg1) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    public void providerStateChanged(LocationProvider arg0, int arg1) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
}

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Vector;
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import javax.microedition.lcdui.Image;

public class GoogleMaps {
    private static final String URL_UNRESERVED =
        "ABCDEFGHIJKLMNOPQRSTUVWXYZ" +
        "abcdefghijklmnopqrstuvwxyz" +
        "0123456789-_.~";
    private static final char[] HEX = "0123456789ABCDEF".toCharArray();

    // these 2 properties will be used with map scrolling methods. You can remove them if not needed
    public static final int offset = 268435456;
    public static final double radius = offset / Math.PI;

    private String apiKey = null;
    public GoogleMaps(String key) {
        apiKey = key;
    }

    public double[] geocodeAddress(String address) throws Exception {
        byte[] res = loadHttpFile(getGeocodeUrl(address));
        String[] data = split(new String(res), ',');

        if (!data[0].equals("200")) {
            int errorCode = Integer.parseInt(data[0]);
            throw new Exception("Google Maps Exception: " + getGeocodeError(errorCode));
        }

        return new double[] {
                Double.parseDouble(data[2]), Double.parseDouble(data[3])
        };
    }

    public Image retrieveStaticImage(int width, int height, double lat, double lng, int zoom,String maptype,
            String format) throws IOException {
        byte[] imageData = loadHttpFile(getMapUrl(width, height, lng, lat, zoom, maptype, format));

        return Image.createImage(imageData, 0, imageData.length);
    }

    private static String getGeocodeError(int errorCode) {
        switch (errorCode) {
        case 400:
            return "Bad request";
        case 500:
            return "Server error";
        case 601:
            return "Missing query";
        case 602:
            return "Unknown address";
        case 603:
            return "Unavailable address";
        case 604:
            return "Unknown directions";
        case 610:
            return "Bad API key";
        case 620:
            return "Too many queries";
        default:
            return "Generic error";
        }
    }

    private String getGeocodeUrl(String address) {
        return "http://maps.google.com/maps/geo?q=" + urlEncode(address) + "&output=csv&key="
                + apiKey;
    }

    private String getMapUrl(int width, int height, double lng, double lat, int zoom, String maptype,String format) {
        return "http://maps.google.com/staticmap?center=" + lat + "," + lng + "&maptype="
                + maptype+"&format="+ format + "&zoom=" + zoom + "&size=" + width + "x" + height + "&key=" + apiKey;
    }

    private static String urlEncode(String str) {
        StringBuffer buf = new StringBuffer();
        byte[] bytes = null;
        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            DataOutputStream dos = new DataOutputStream(bos);
            dos.writeUTF(str);
            bytes = bos.toByteArray();
        } catch (IOException e) {
            // ignore
        }
        for (int i = 2; i < bytes.length; i++) {
            byte b = bytes[i];
            if (URL_UNRESERVED.indexOf(b) >= 0) {
                buf.append((char) b);
            } else {
                buf.append('%').append(HEX[(b >> 4) & 0x0f]).append(HEX[b & 0x0f]);
            }
        }
        return buf.toString();
    }

    private static byte[] loadHttpFile(String url) throws IOException {
        byte[] byteBuffer;

        HttpConnection hc = (HttpConnection) Connector.open(url);
        try {
            hc.setRequestMethod(HttpConnection.GET);
            InputStream is = hc.openInputStream();
            try {
                int len = (int) hc.getLength();
                if (len > 0) {
                    byteBuffer = new byte[len];
                    int done = 0;
                    while (done < len) {
                        done += is.read(byteBuffer, done, len - done);
                    }
                } else {
                    ByteArrayOutputStream bos = new ByteArrayOutputStream();
                    byte[] buffer = new byte[512];
                    int count;
                    while ( (count = is.read(buffer)) >= 0 ) {
                        bos.write(buffer, 0, count);
                    }
                    byteBuffer = bos.toByteArray();
                }
            } finally {
                is.close();
            }
        } finally {
            hc.close();
        }

        return byteBuffer;
    }

    private static String[] split(String s, int chr) {
        Vector res = new Vector();

        int curr;
        int prev = 0;

        while ( (curr = s.indexOf(chr, prev)) >= 0 ) {
            res.addElement(s.substring(prev, curr));
            prev = curr + 1;
        }
        res.addElement(s.substring(prev));

        String[] splitted = new String[res.size()];
        res.copyInto(splitted);

        return splitted;
    }
}