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Posts Tagged ‘mobile’

a simple Click-A-Tell SendSMS HTTP POST API library

September 7th, 2009 No Comments   Posted in Open Source, SMS and MMS, Tips, Tricks, Guide, Web Service

Click-a-tell is a simple web service that allows you to integrate sms sending capability into your web application. Its simplicity and wide range of API available is very attractive to small to medium web application developers. Among the API supported by Clickatell are :

  • HTTP POST
  • HTTP GET
  • FTP API
  • SOAP
  • EMAIL-to-SMS
  • COM Object

Clickatell website offers examples of how to use their API in several programming language including but not limited to : VB.net, PHP, ASP, ASP.NET,PERL, Python, Coldfusion, etc.

However I found that the example written for PHP is a little bit outdated and it uses the file() function to initiate HTTP GET request which is generally restricted on webservers as it pose a huge security risk. The other Clickatell class found through PHPClasses website are either too cumbersome for my project or supported other protocol than I intended to use.

As a result I wrote my own Clickatell SMS (clickatell_sendsms_0.5.zip) class specifically for my own use.

Here are a sample code using the SendSMS 0.5 class

PLAIN TEXT
PHP:
  1. <?php
  2. require('SendSMS.php');
  3.  
  4.  
  5. $sendsms = new SendSMS("username","password","HTTP POST API key");
  6.  
  7.  
  8. /* if the login return 0, means that login failed, you cant send sms after this */
  9. if  (  ($sendsms->login()) == 0  ) {
  10.     die( "failed");
  11. }
  12.  
  13. /*other wise, you can send sms using the simple send() call*/
  14.  
  15. $sendsms->send("0132073011","testing send sms - camna? boleh dpt ? - mr hafiz");
  16.  
  17. ?>

You can download the clickatell_sendsms_0.5.zip">SendSMS 0.5 PHP class from this website, note that the class is licensed under the terms of the GNU General Public License version 2, and the class is only meant to be use with Click-A-Tell HTTP POST API.

The class can also be use with the libcurlemu library whenever applicable.


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Don’t SMS and Drive, it’s bad for your health

September 3rd, 2009 1 Comment   Posted in General, SMS and MMS

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Phone ReUnion: A little bit of iPhone Joke

March 9th, 2009 1 Comment   Posted in General, Smartphone


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Porting JavaME apps to Android is easier with J2ME Polish

March 4th, 2009 1 Comment   Posted in Android, J2ME / JavaME, Mobile Software

Great news for JavaME developers! The J2ME Polish project has announced that their upcoming j2mepolish 2.1 toolkit suite will support porting JavaME apps to Google Android mobile platform automatically! This means that the current JavaME developers will enjoy the advantages of porting their existing mobile application to Android effortlessly.

Android Logo

According to their press release, the next j2mepolish release will focus on automating the process of converting JavaME MIDlets to iPhone application.

J2ME Polish 2.1: Android support?

Android Logo

Currently I've yet to see how a ported JavaME application would look like on an Android mobile phone, but hopefully it would be as good as the ordinary Google Android app. At this time of this writing, J2ME Polish 2.1 is only available as a preview release which can be downloaded from J2ME Polish website.

I'll update this blog about this feature once J2ME Polish 2.1 has been released.

p/s: I'm Eager to know how a JavaME app will look like once its ported to Android.


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JavaME JSR-179 Example Code : Detect Location via TinyGeocoder

February 22nd, 2009 3 Comments   Posted in J2ME / JavaME, Location API, Open Source, Smartphone, Tips, Tricks, Guide

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.

J2ME GPS Reverse Geocoding mypapit

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.

PLAIN TEXT
JAVA:
  1. import javax.microedition.midlet.*;
  2. import javax.microedition.lcdui.*;
  3. import javax.microedition.location.*;
  4. import javax.microedition.io.*;
  5. import javax.microedition.location.*;
  6. import java.io.*;
  7.  
  8. public class Geocoder extends MIDlet implements CommandListener
  9. {
  10.     public Display display;
  11.     public Form form;
  12.     private Command cmdExit,cmdOK;
  13.     public StringItem si, sili;
  14.  
  15.     public Geocoder()
  16.     {
  17.  
  18.         display =Display.getDisplay(this);
  19.         form = new Form("Location Api test");
  20.         cmdExit = new Command("Exit",Command.EXIT,5);
  21.         cmdOK = new Command("OK",Command.OK,1);
  22.         si = new StringItem("Coordinates", "Press OK");
  23.         sili = new StringItem("Location", "");
  24.         form.append(si);
  25.         form.append(sili);
  26.         form.addCommand(cmdOK);
  27.         form.addCommand(cmdExit);
  28.         form.setCommandListener(this);
  29.     }
  30.  
  31.     public void startApp()
  32.     {
  33.         display.setCurrent(form);
  34.     }
  35.  
  36.  
  37.     public void pauseApp()
  38.     {}
  39.  
  40.     public void destroyApp(boolean flag) {
  41.         notifyDestroyed();
  42.     }
  43.  
  44.     public void commandAction(Command c, Displayable d)
  45.     {
  46.         if (c == cmdOK){
  47.             Retriever ret = new Retriever(this);
  48.             ret.start();
  49.  
  50.         } else if (c == cmdExit) {
  51.             destroyApp(false);
  52.         }
  53.     }
  54.  
  55.     public void displayString(String string)
  56.     {
  57.         si.setText(string);
  58.     }
  59.  
  60.     public void showAlert(String message) {
  61.         Alert alert = new Alert("Alert",message,null,AlertType.WARNING);
  62.         display.setCurrent(alert,form);
  63.     }
  64.  
  65.  
  66.  
  67.  
  68. }
  69.  
  70. class Retriever extends Thread {
  71.  
  72.     private Geocoder midlet;
  73.     Form formRunning;
  74.     Gauge gauge;
  75.  
  76.  
  77.  
  78.     public Retriever(Geocoder midlet)
  79.         {
  80.             /**
  81.               * Constructor
  82.               *
  83.               * EFFECTS: Initialise the server and store midlet information
  84.               *
  85.               * @param midlet The main application midlet
  86.               * @param server Forecast Server URL
  87.               *
  88.               */
  89.             this.midlet = midlet;
  90.             formRunning = new Form("Retrieving Info");
  91.             formRunning.append(new Gauge("Processing",false,Gauge.INDEFINITE,Gauge.CONTINUOUS_RUNNING));
  92.             midlet.display.setCurrent(formRunning);
  93.  
  94.     }
  95.  
  96.     public void run()
  97.         {
  98.             /**
  99.             * Entry point of the thread
  100.             *
  101.             * EFFECTS: call to connect() method
  102.             */
  103.             try {
  104.                             checkLocation();
  105.                         } catch (Exception ex)
  106.                         {
  107.                             ex.printStackTrace();
  108.                             midlet.displayString(ex.toString());
  109.             } finally {
  110.  
  111.             }
  112.  
  113.  
  114.         }
  115.  
  116.     public void checkLocation() throws Exception
  117.     {
  118.         String string;
  119.         Location l;
  120.         LocationProvider lp;
  121.         Coordinates c;
  122.         // Set criteria for selecting a location provider:
  123.         // accurate to 500 meters horizontally
  124.         Criteria cr= new Criteria();
  125.         cr.setHorizontalAccuracy(5000);
  126.         cr.setVerticalAccuracy(5000);
  127.  
  128.         // Get an instance of the provider
  129.         lp= LocationProvider.getInstance(cr);
  130.  
  131.         // Request the location, setting a one-minute timeout
  132.         l = lp.getLocation(120);
  133.         c = l.getQualifiedCoordinates();
  134.  
  135.         if(c != null ) {
  136.           // Use coordinate information
  137.           double lat = c.getLatitude();
  138.           double lon = c.getLongitude();
  139.           string = "\nLatitude : " + lat + "\nLongitude : " + lon;
  140.           new GetData(midlet,lat,lon).start();
  141.  
  142.         } else {
  143.             string ="Location API failed";
  144.         }
  145.  
  146.         formRunning.append("Obtained coordinates...");
  147.         midlet.displayString(string);
  148.     }
  149. }
  150.  
  151. class GetData implements Runnable,CommandListener {
  152.  
  153. Geocoder midlet;
  154. double lat, lon;
  155.  
  156. public GetData (Geocoder midlet, double lat, double lon) {
  157.  
  158.     this.lat = lat;
  159.     this.lon = lon;
  160.     this.midlet = midlet;
  161.  
  162.  
  163. }
  164.  
  165. public void commandAction (Command cmd,Displayable disp)
  166. {
  167.  
  168. }
  169.  
  170. public void start() {
  171.        Thread t = new Thread(this);
  172.        t.start();
  173. }
  174.  
  175.  
  176. public void run() {
  177.     HttpConnection conn=null;
  178.     InputStream is=null;
  179.     String sb;
  180.  
  181.     try {
  182.             String sUrl = "http://tinygeocoder.com/create-api.php?g="+""+lat+","+""+lon;
  183.             conn = (HttpConnection) Connector.open(sUrl,Connector.READ);
  184.             if (conn.getResponseCode() == HttpConnection.HTTP_OK) {
  185.                     is = conn.openInputStream();
  186.                     byte buf[] = new byte[128];
  187.                     int total =0;
  188.                     while (total <128) {
  189.                         int count = is.read(buf,total,128-total);
  190.                         if (count<0) {
  191.                             break;
  192.                         }
  193.                         total += count;
  194.                     }
  195.  
  196.                     sb = new String(buf,0,total);
  197.  
  198.                     if (sb.length() <10) {
  199.                             midlet.showAlert("Connection error, please try again");
  200.                             is.close();
  201.                             conn.close();
  202.  
  203.                             return;
  204.                     }
  205.  
  206.                       midlet.sili.setText(sb);
  207.                     //midlet.form.append(sb);
  208.                     //vectorized();
  209.                     //midlet.saveCurrency(false,midlet.vector);
  210.                     //midlet.display.setCurrent(midlet.form);
  211.             } else if (conn.getResponseCode() == HttpConnection.HTTP_NOT_FOUND) {
  212.                     midlet.showAlert("URL not found");
  213.  
  214.             } else {
  215.                 midlet.showAlert("Server busy or unavailable. Please try again later");
  216.             }
  217.  
  218.     } catch (SecurityException sex) {
  219.         midlet.showAlert("Connection failed. You need to authorize this application to access network");
  220.     } catch (IOException ioex) {
  221.             midlet.showAlert("Connection failed. Please try again later.");
  222.     } catch (Exception e){
  223.         midlet.showAlert(e.toString());
  224.         e.printStackTrace();
  225.         //midlet.display.setCurrent(midlet.form);
  226.     } finally {
  227.         try {
  228.             if (is != null) {
  229.                 is.close();
  230.             }
  231.  
  232.             if (conn != null) {
  233.                 conn.close();
  234.             }
  235.         } catch (IOException ioexception) {}
  236.             is =null;
  237.             conn =null;
  238.             midlet.display.setCurrent(midlet.form);
  239.  
  240.  
  241.     }
  242. }
  243.  
  244.  
  245. public String URLEncode(String s)
  246. {
  247.         if (s!=null) {
  248.             StringBuffer tmp = new StringBuffer();
  249.             int i=0;
  250.             try {
  251.                 while (true) {
  252.                     int b = (int)s.charAt(i++);
  253.                     if ((b>=0x30 && b<=0x39) || (b>=0x41 && b<=0x5A) || (b>=0x61 && b<=0x7A)) {
  254.                         tmp.append((char)b);
  255.                     }
  256.                     else {
  257.                         tmp.append("%");
  258.                         if (b <= 0xf) tmp.append("0");
  259.                         tmp.append(Integer.toHexString(b));
  260.                     }
  261.                 }
  262.             }
  263.             catch (Exception e) {}
  264.             return tmp.toString();
  265.         }
  266.         return null;
  267. }
  268. }

The code requires mobile device which implements JSR-179 Location API and has been tested on Nokia E71 and 6210 Navigator.


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TinyGeo-coder : A cool free geocoding/reverse geocoding service

February 9th, 2009 3 Comments   Posted in Web Service

I was searching for a free and easy to use geocoding web service over the internet for my experiment involving Location Based Service (LBS). Then suddenly i came accross tinygeocoder, a web service which really suits my need.

tinygeocoder services that caught my eye :

  • geocoding - you can feed it with name of place like "San Francisco, CA" and it will return result in latitude and longitude pair "(37.775196,-122.419204)"
  • reverse geocoding - feed it with a coordinate, and the service will return you the name of the corresponding place.

Personally I like the "reverse geocoding" functionality more as it would be handy for my LBS project. Keep an eye for this blog as I'll be posting JavaME JSR-179 (Location API) codes which utilizes tinygeocoder services.

p/s: If you find tinygeoder helpful, consider making donations to them.


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Kirodict – a Compact, Lightweight JavaME mobile dictionary

February 8th, 2009 1 Comment   Posted in J2ME / JavaME, Java, Mobile Software, Motorola, Nokia, Sony Ericsson, Symbian

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.

Kirodict - compact mobile dictionary

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


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