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  • pit 6:07 pm on April 30, 2008 Permalink | Reply
    Tags: , , loading bar, progress bar, source code   

    How to implement a loading bar with J2me 

    Do you need a simple, effective j2me loading bar for your long-running operations? And would you like to avoid using (horrible) forms and gauges? Here’s a simple component you can freely use, modify or even ignore :)

    j2me canvas loading bar

    You can see a live preview on the emulator. To use it, you’ll simply instantiate and start it, like this:

    LoadingBar bar = new LoadingBar(100, 40, 5, 10, 0xff0000);

    For an explanation of source code you can go to my Forum Nokia Article: J2ME Canvas Loading Bar. If you simply want rude code, here it is: LoadingBar.java, and here is a sample Canvas using it: LoadingBarCanvas.java.

    • cibenxs 6:14 am on May 14, 2008 Permalink

      sorry before…

      i am interesting with this aplication…

      but i can understand how to implement this aplication

      can i get tutorial to using it

      thx beofre

    • pit 11:13 am on May 14, 2008 Permalink

      Hi Cibenxs,

      you’re right, its use was not clear from my article, so I’ve posted a sample Canvas that makes use of it. You can find its source code at the end of the post itself.


    • cibenxs 9:56 am on May 17, 2008 Permalink

      thx for ur attention
      but can i get this canvas source code this application now, please?
      because i want to using this application to combine with my application to solve my final project.

      can i?

      thx before

    • cibenxs 9:58 am on May 17, 2008 Permalink

      oh… i1am sory.i`m not look loadingcanvasbas. java before. thanks you very much

    • pit 10:02 am on May 17, 2008 Permalink

      You’re welcome :)

    • nagesh 10:19 am on January 20, 2009 Permalink

      When and Where should i call the bar.stop method?

      I’m not getting it please help me to solve it.

    • pit 10:48 am on January 20, 2009 Permalink

      Hi nagesh!

      you can call the stop() method in any moment, and it will stop the Timer (and so, the animation) associated to the Loading bar. You should also remember to call it when you do not need the Loading bar anymore, since it will free up resources associated with the animation task itself.

      Feel free to ask if you have any more doubts! :)

    • nagesh 11:07 am on January 20, 2009 Permalink

      Hi Pit,

      Can u please tell me through the code as to where should i place bar.stop() method in LoadingBarCanvas.java file.

      Because i tried to place it in some places and checked, it was not working.

    • nagesh 11:51 am on January 20, 2009 Permalink


      Are you there?

  • pit 1:23 pm on April 24, 2008 Permalink | Reply
    Tags: , , , , source code   

    Building a fisheye menu in J2ME with JSR 226 

    I’ve always loved fisheye menus but, while there are quite a lot of ready-to-use components for web applications, when it comes to mobile it’s hard to find something. What better reason to build one? :)

    Since we’ll have dynamically resizable icons, a natural choice to build one with J2ME is JSR 226, that give us full support of SVG Tiny. This will limit portability of code, since this JSR is not supported on all J2me phones, but support is rapidly growing with latest generation phones.

    As you’ll see, code is quite straightforward, and great part of it is dedicated to coordinates/size calculations, to create that “slide/resize” effect that is soooooo cool :)

    J2ME fisheye menu

    You can find menu source code on my Forum Nokia Wiki article: J2ME Fisheye Menu with JSR 226, or download sample midlet here (and source code here).

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