Make your own map

Comments

27 Sep
2009

Article Review by kalki (20090927)

This articles gives an innovative solution to most common requirement of today's youngsters. The main problem explained here is how can we show particular location dynamically to others on remote location. It gives example of railway station on which friends from outside the station coming to our home and if we want to show our home's exact dynamic location map to them on their device this article shows complete example.

This article can become next innovative application in LBS category. Must try an example. given code example runs perfectly.Advantage of using this code and idea of this application is so innovative.

Log in or Join to leave comments.

Article Metadata

---

Tested with

Devices(s): 2710N

---

Compatibility

Platform(s): Since S60 3rd Edition, Since Series 40 6th Edition

---

Article

Keywords: javax.microedition.location.LocationProvider, javax.microedition.location.Location, javax.microedition.location.Coordinates.getLatitude, javax.microedition.location.Coordinates.getLongitude()

Created: vivartpandey (28 May 2008)

Reviewed: skalogir (06 Oct 2011)

Last edited: jasfox (25 Apr 2013)

Overview

This is a simple Midlet that can help you get and display on the phone's screen the coordinates on each of a route's critical turning points, as well as the direction (left or right) towards which you are heading. The idea is to be able to send this information to someone who needs directions when following the same route.

Example Code

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.location.*;
 
public class LBS extends MIDlet implements CommandListener {
    //soft key indication for direction.
    Command Right = new Command("RIGHT",Command.ITEM,0);
    Command Left = new Command("LEFT",Command.BACK,0);
    //first coordinate that is your starting point.
 
    String direction="Starting point";
    public LBS() {}
    Form f=new Form("Waiting...");
    public void startApp() {
 
        f.append("Start");
        f.addCommand(Left);
        f.addCommand(Right);
        f.setCommandListener(this);
        Display.getDisplay(this).setCurrent(f);
 
        getCoordinates(f,direction);
 
    }
 
	private void getCoordinates(Form f,String dir) {
		try {
            Criteria c=new Criteria();
            c.setHorizontalAccuracy(100);
            c.setVerticalAccuracy(100);
            c.setPreferredPowerConsumption(Criteria.POWER_USAGE_LOW);
            LocationProvider lp=LocationProvider.getInstance(c);
            Location loc=lp.getLocation(60);
            QualifiedCoordinates qc=loc.getQualifiedCoordinates();
            f.append(dir);
            f.append("Alt: "+qc.getAltitude());
            f.append("Lat: "+qc.getLatitude());
            f.append("Long: "+qc.getLongitude());
 
        } catch(Exception e) {
            f.append("Exception: "+e);
        }
	}
 
    public void pauseApp() {}
 
    public void destroyApp(boolean destroy) {}
 
    public void commandAction(Command c, Displayable s) {
        //whenever your press left this will show the cordinates
        //of the turning point.with the label of left.
 
        if (c == Left) {
 
            direction="\nLEFT";
        	getCoordinates(f,direction);
        }
        //when ever you press the right this will show the coordinates of
        // the turning point for the right.
 
        if (c == Right) {
 
            direction="\nRIGHT";
        	getCoordinates(f,direction);
        }
    }
}