Posts Tagged ‘Nokia’
Video: Fast and Furious – Pink Slip Mobile Phone Game
Can be installed on Java ME supported phone
Available from: http://www.filesonic.com/file/1726936704
JavaME JSR-179 Example Code : Detect Location via TinyGeocoder
I’ve completed the JSR-179 Location API code for reverse geocoding in JavaME. This code essentially is an expansion of the previous JSR-179 example that i’ve posted in the blog before, plus the Reverse-Geocoding feature, thanks to TinyGeocoder service.
What this sample MIDlet does?
It obtain coordinates via the mobile phone JSR-179 Location API and subsequently display the name of the location using TinyGeocoder reverse geocoding service.
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.location.*;
import javax.microedition.io.*;
import javax.microedition.location.*;
import java.io.*;
public class Geocoder extends MIDlet implements CommandListener
{
public Display display;
public Form form;
private Command cmdExit,cmdOK;
public StringItem si, sili;
public Geocoder()
{
display =Display.getDisplay(this);
form = new Form("Location Api test");
cmdExit = new Command("Exit",Command.EXIT,5);
cmdOK = new Command("OK",Command.OK,1);
si = new StringItem("Coordinates", "Press OK");
sili = new StringItem("Location", "");
form.append(si);
form.append(sili);
form.addCommand(cmdOK);
form.addCommand(cmdExit);
form.setCommandListener(this);
}
public void startApp()
{
display.setCurrent(form);
}
public void pauseApp()
{}
public void destroyApp(boolean flag) {
notifyDestroyed();
}
public void commandAction(Command c, Displayable d)
{
if (c == cmdOK){
Retriever ret = new Retriever(this);
ret.start();
} else if (c == cmdExit) {
destroyApp(false);
}
}
public void displayString(String string)
{
si.setText(string);
}
public void showAlert(String message) {
Alert alert = new Alert("Alert",message,null,AlertType.WARNING);
display.setCurrent(alert,form);
}
}
class Retriever extends Thread {
private Geocoder midlet;
Form formRunning;
Gauge gauge;
public Retriever(Geocoder midlet)
{
/**
* Constructor
*
* EFFECTS: Initialise the server and store midlet information
*
* @param midlet The main application midlet
* @param server Forecast Server URL
*
*/
this.midlet = midlet;
formRunning = new Form("Retrieving Info");
formRunning.append(new Gauge("Processing",false,Gauge.INDEFINITE,Gauge.CONTINUOUS_RUNNING));
midlet.display.setCurrent(formRunning);
}
public void run()
{
/**
* Entry point of the thread
*
* EFFECTS: call to connect() method
*/
try {
checkLocation();
} catch (Exception ex)
{
ex.printStackTrace();
midlet.displayString(ex.toString());
} finally {
}
}
public void checkLocation() throws Exception
{
String string;
Location l;
LocationProvider lp;
Coordinates c;
// Set criteria for selecting a location provider:
// accurate to 500 meters horizontally
Criteria cr= new Criteria();
cr.setHorizontalAccuracy(5000);
cr.setVerticalAccuracy(5000);
// Get an instance of the provider
lp= LocationProvider.getInstance(cr);
// Request the location, setting a one-minute timeout
l = lp.getLocation(120);
c = l.getQualifiedCoordinates();
if(c != null ) {
// Use coordinate information
double lat = c.getLatitude();
double lon = c.getLongitude();
string = "\nLatitude : " + lat + "\nLongitude : " + lon;
new GetData(midlet,lat,lon).start();
} else {
string ="Location API failed";
}
formRunning.append("Obtained coordinates...");
midlet.displayString(string);
}
}
class GetData implements Runnable,CommandListener {
Geocoder midlet;
double lat, lon;
public GetData (Geocoder midlet, double lat, double lon) {
this.lat = lat;
this.lon = lon;
this.midlet = midlet;
}
public void commandAction (Command cmd,Displayable disp)
{
}
public void start() {
Thread t = new Thread(this);
t.start();
}
public void run() {
HttpConnection conn=null;
InputStream is=null;
String sb;
try {
String sUrl = "http://tinygeocoder.com/create-api.php?g="+""+lat+","+""+lon;
conn = (HttpConnection) Connector.open(sUrl,Connector.READ);
if (conn.getResponseCode() == HttpConnection.HTTP_OK) {
is = conn.openInputStream();
byte buf[] = new byte[128];
int total =0;
while (total < 128) {
int count = is.read(buf,total,128-total);
if (count<0) {
break;
}
total += count;
}
sb = new String(buf,0,total);
if (sb.length() < 10) {
midlet.showAlert("Connection error, please try again");
is.close();
conn.close();
return;
}
midlet.sili.setText(sb);
//midlet.form.append(sb);
//vectorized();
//midlet.saveCurrency(false,midlet.vector);
//midlet.display.setCurrent(midlet.form);
} else if (conn.getResponseCode() == HttpConnection.HTTP_NOT_FOUND) {
midlet.showAlert("URL not found");
} else {
midlet.showAlert("Server busy or unavailable. Please try again later");
}
} catch (SecurityException sex) {
midlet.showAlert("Connection failed. You need to authorize this application to access network");
} catch (IOException ioex) {
midlet.showAlert("Connection failed. Please try again later.");
} catch (Exception e){
midlet.showAlert(e.toString());
e.printStackTrace();
//midlet.display.setCurrent(midlet.form);
} finally {
try {
if (is != null) {
is.close();
}
if (conn != null) {
conn.close();
}
} catch (IOException ioexception) {}
is =null;
conn =null;
midlet.display.setCurrent(midlet.form);
}
}
public String URLEncode(String s)
{
if (s!=null) {
StringBuffer tmp = new StringBuffer();
int i=0;
try {
while (true) {
int b = (int)s.charAt(i++);
if ((b>=0x30 && b<=0x39) || (b>=0x41 && b<=0x5A) || (b>=0x61 && b<=0x7A)) {
tmp.append((char)b);
}
else {
tmp.append("%");
if (b <= 0xf) tmp.append("0");
tmp.append(Integer.toHexString(b));
}
}
}
catch (Exception e) {}
return tmp.toString();
}
return null;
}
}
The code requires mobile device which implements JSR-179 Location API and has been tested on Nokia E71 and 6210 Navigator.
Tags: coordinates, e71, example, geocoder, geocoding, gps, j2me, javame, jsr-179, jsr179, lbs, location-api, locationapi, midlet, midlets, mobile, Nokia, source code, tinygeocoder
Kirodict – a Compact, Lightweight JavaME mobile dictionary
Finally after spending a couple months working on this on and off personal project, I decided to release the final version of Kirodict – a lightweight mobile dictionary.
As it name implies, Kirodict was designed to be small in size while maintaining its functionality as a fully fledge dictionary for mobile and embedded device. Kirodict acts as a front-end to an RFC2229 (dict.org) compatible server which it obtain the word definition from.
Its small and compact size as well as its portability makes it an attractive application to be downloaded and installed on your mobile phone. Kirodict requires mobile phones with at least these feature :
- MIDP 2.0 /CLDC 1.0 compatible phones
- 128kB of free storage space
- Phone with network connection (3G, GPRS, Wifi, wimax)
With lower requirements, it can be installed on a lower end phone without much problem. Kirodict does not use additional storage space as it does not cache its results.
Kirodict can be downloaded from Kirodict Google Code project website and it is licensed under the GNU General Public License version 2.0
I bought a new phone – Nokia E71
I know I’ve been slacking lately on my post.. but hey, I got myself a new phone – The Nokia E71!
Phones model and features are getting diverse now and I’ve noticed that its getting harder and harder to choose a phone that really suits my needs. For example, one feature found on Phone A isnt necessarily can be found on Phone B.
So it took me a while to replace my good old 6630 that has been stolen few months before. But hey, I’m back on my feet now.
Among the key feature that attract me to buy this phone are :
- Location API support (JSR-179) with built in GPS receiver
- QWERTY keyboard
- Ease of handling, my hands a bit slippy on its sister’s phone E66
- Battery last longer
- Hot swappable micro-sd card
- More than adequate internal memory
- Supports WiFi
\
The only drawback that I could think of this phone is its camera that is not as good as the N95,N96 series phone. But I can still live with that since I rarely use the camera anyway.
Other additional feature
The phone comes with Advance Call Manager and Multi Scanner free of charge, making it easier to filter out unwanted call and to manage phone blacklist.
Multi Scanner allows you to take a photo of name card and automatically store important information (Name, Phone Number, Address, Company’s Name, Fax Number) right into the phone.
I hope I can be more productive at updating this blog and producing new mobile applications with this phone.
How to get Nokia Battery Level in JavaME
Nokia Symbian 3rd Edition phone introduces “com.nokia.mid.batterylevel” properties which you can get the current battery charge level by calling System.getProperty(“com.nokia.mid.batterylevel”) from within your midlet application. Its up to your imagination for you to do the rest.
Sample source code (displaying battery charge level on gauge):
/********** /* /* Nokia Battery Level midlet /* Copyright 2008 Mohammad Hafiz bin Ismail ([email protected]) /* http://mobilepit.com /* /* May be use freely **********/ import javax.microedition.midlet.*; import javax.microedition.lcdui.*; public class NokiaBattery extends MIDlet implements CommandListener { int value; Display display; Form form; Gauge gauge; Command cmdExit; public NokiaBattery() { display = Display.getDisplay(this); form = new Form("Nokia Battery"); cmdExit = new Command("Exit",Command.EXIT,1); form.addCommand(cmdExit); value=Integer.parseInt(System.getProperty("com.nokia.mid.batterylevel")); gauge = new Gauge("Level",false,100,value); form.append(gauge); form.append("Value :"+value); StringItem item = new StringItem("Network Signal",System.getProperty("com.nokia.mid.networksignal")); form.append(item); form.setCommandListener(this); } public void startApp(){ display.setCurrent(form); } public void pauseApp() {} public void destroyApp(boolean flags) { notifyDestroyed(); } public void commandAction (Command cmd, Displayable disp) { if (cmd == cmdExit) { destroyApp(false); } } }
Download source code and sample midlet : NokiaBattery_midlet.zip
Upgraded to WordPress 2.5.1
This website upgraded has been upgraded to wordpress 2.5.1 to ensure quality content delivery for its reader. Thank you for subscribing and reading this blog after this long years. I’m planning to continue to write in the blog again some time after next month.
So stay tuned!
SymbianTutorial.org – Symbian application development basic
SymbianTutorial.org is a good website to learn about fundamental application development in Symbian (especially series60).
Though some information about the IDE is slightly outdated (as stated on the website), the tutorial website covers basic Symbian data type, class naming convention, exception handling, input/output, gui handling basics and how to create resource file for Symbian development platform.
The website itself is structred in a way to introduce reader to Symbian application development environment, which is the main platform used in Nokia and Sony-Ericsson smartphones.
Foxrate – Open Source J2ME Currency Converter Mobile Application
Foxrate mobile is a currency converter application for mobile devices. It is a relatively small application which supports converting from/to 35 different currencies used around the world.
Foxrate lifts you from the burden of updating currency rate by automatically retrieving latest currency information from remote server. The best part about foxrate is — it is available for free and open source!
Download Foxrate Mobile Currency Converter
Foxrate can downloaded from- Google Code’s Foxrate page and Getjar.com