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Posts Tagged ‘midp’

I bought a new phone – Nokia E71

December 26th, 2008 4 Comments   Posted in J2ME / JavaME, Java, Nokia, Smartphone, Symbian

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.

Nokia E71 papit

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.


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Free Skype JavaME (J2ME) client for mobile device

June 27th, 2008 13 Comments   Posted in Mobile Software

Great news for those who are using Skype to get connected with their contacts, now they can do so while on the move with the free Skype mobile client.

The mobile client offers chat feature as well as receiving calls from Skype contacts. However airtime charge may incur for receiving voice call, depending on the subscribers’ data plan.

The main advantage of this J2ME client is portability across a wide-range of mobile devices which implements MIDP 2.0. Although the Skype Mobile website lists only handful of supported device, in reality Mobile Skype is supported on a lot more devices.

Disadvantages include its inability to send SMS to your contacts and the inability to make voice calls. However in my opinion, the free Mobile Skype does its best considering it is written for mobile devices with limited capabilities.

You can download Skype Mobile from this website : http://mobiledownload.skype.com/

Tips
With little creativity on java jad file, you can install Mobile Skype on any MIDP 2.0 supported device without much trouble


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Cool J2ME Game Demo – Opposite Lock

October 9th, 2007 No Comments   Posted in J2ME / JavaME, Mobile Games, Sony Ericsson

Here’s a video clip from the Grand Prize winner of Java Mobile Application Video Contest organized by Sun.

The demo feature a Mobile Java (j2me) car racing game called Opposite Lock. Enjoy the video.

[coolplayer width="425" height="360" autoplay="0" loop="0" charset="utf-8" download="1" mediatype=""]
J2ME Opposite Lock Game
[/coolplayer]

You can download and buy Opposite Lock from clickgamer.com


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Download J2ME WheelItem CustomItem

October 6th, 2007 1 Comment   Posted in J2ME / JavaME

This is an example of J2ME / JavaME CustomItem called WheelItem. It does nothing beside showing a spinning wheel on the phone screen. WheelItem is a perfect candidate to be displayed on a wait form screen replacing Gauge class while your application is performing lengthy operating.

WheelItem Screenshot

PLAIN TEXT
JAVA:
  1. import javax.microedition.midlet.*;
  2. import javax.microedition.lcdui.*;
  3. import java.util.*;
  4.  
  5. public class WheelItem extends CustomItem
  6. {
  7.   private int mCount,mMaximum;
  8.   private int mInterval;
  9.   private int mWidth,mHeight,mX,mY,mRadius;
  10.   private String mMessage;
  11.    
  12. public WheelItem(String title)
  13. {
  14.     super(title);
  15.     mCount=0;
  16.     mMaximum = 36;
  17.     mInterval = 100;
  18.  
  19.     TimerTask task = new TimerTask() {
  20.         public void run() {
  21.             mCount = (mCount+1) % mMaximum;
  22.             repaint();
  23.         }
  24.     };
  25.     Timer timer = new Timer();
  26.     timer.schedule(task,0,mInterval);
  27. }
  28.     public void setString(String string)
  29.     {
  30.         mMessage = string;
  31.         repaint();
  32.     }
  33.    
  34.     public void paint(Graphics g, int iWidth, int iHeight) {
  35.         mWidth = iWidth;
  36.         mHeight = iHeight;
  37.         int halfWidth = mWidth/2;
  38.         int halfHeight = mHeight/2;
  39.  
  40.         mRadius = Math.min(halfWidth,halfHeight);
  41.         mX = halfWidth - mRadius/2;
  42.         mY = halfHeight - mRadius/2;
  43.  
  44.         int theta = -(mCount*360/mMaximum);
  45.  
  46.         g.setColor(255,255,255);
  47.         g.fillRect(0,0,mWidth,mHeight);
  48.         g.setColor(0,0,0);
  49.         g.drawArc(mX,mY,mRadius,mRadius,0,360);
  50.         g.fillArc(mX,mY,mRadius,mRadius,theta+90,90);
  51.         g.fillArc(mX,mY,mRadius,mRadius,theta+270,90);
  52.        
  53.         if (mMessage !=null)
  54.         {
  55.             g.drawString(mMessage,mWidth/2,mHeight,Graphics.BOTTOM | Graphics.HCENTER);
  56.         }
  57.     }
  58.   public int getMinContentWidth() { return 80; }
  59.   public int getMinContentHeight() { return 80; }
  60.   public int getPrefContentWidth(int width) {return getMinContentWidth();}
  61.   public int getPrefContentHeight(int height) {return getMinContentHeight();}
  62. }

Download example application with WheelItem source : WaitFormDemo.zip

Ported (rather poorly) from Wheel canvas written by Jonathan Knudsen from his article - Networking, User Experiences and Threads.

Any suggestions or improvements are welcomed!


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SymbianTutorial.org – Symbian application development basic

October 2nd, 2007 1 Comment   Posted in Nokia, PDA, PocketPC, Symbian

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.


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iPhoneCanvas – Fancy List component class for J2ME

October 1st, 2007 No Comments   Posted in J2ME / JavaME, Open Source

I found a really nice but simple to use fancy list chooser class that emulates an iPhone display. The class requires MIDP 2.0 supported phones and can replace the default and boring List chooser class into a stunning, smooth scrolling graphical menu (includes reflections) for your users to see

Here's example screenshot of iPhoneCanvas demo in action :

These menu icons are generated from flat and boring thumbnails like these :

Download
iPhoneCanvas is licensed under the GNU General Public License and can be downloaded from listchooser Google Code project page

Demo
The iPhoneCanvas demo featured in above screenshot can be downloaded here - fancylist.jar, fancylist.zip (demo source code)

Please submit bug reports or suggestions at Google Code listchooser page


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How to generate Random Numbers in J2ME application

September 28th, 2007 5 Comments   Posted in J2ME / JavaME, Java, Tips, Tricks, Guide, newbie

One of the popular question asked in this blog is ways to generate random numbers in J2ME application.

As most people probably realized, the JavaME CLDC does not include the Math.Random class to generate random numbers. However one can generate a series of random numbers in JavaME/J2ME application by using the included java.util.Random class.

Here's a sample usage

PLAIN TEXT
JAVA:
  1. import java.util.Random;
  2. ...
  3.     Random generator = new Random();
  4.     generator.setSeed(System.currentTimeMillis());
  5.     float f = generator.nextFloat();
  6.    
  7.     System.out.println(""+(f*100.0f)%100);
  8. ...

The sample code above will produce a random floating-point number between 0..100 (exclusive)

Here's the source code for the full Random Number Demo application : RandomDemo.java,


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