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  1. #1
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    Aug 2009
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    8

    Mobile Sensor API (JSR-256) Add-on for Nokia 5800 XpressMusic

    I try on a 5800 XM but it doesn't work. When I execute a middlet It throw this exception:java.lang.NumberFormatException. Do you know why? This is the info from the stack: What do you think?

    ======== J9 2.3 Standard Output (Mié Sep 02 21:22:48 2009) ========
    ======== J9 2.3 Standard Error (Mié Sep 02 21:22:48 2009) ========
    IBM J9 2.3 Symbian arm-32 (JIT enabled)
    J9VM - 20081015_24516_lEdFGV
    GC - 200810_03
    Uncaught exception!
    java.lang.Error: Exception in static initializer: java.lang.NumberFormatException:
    at java.lang.J9VMInternals.initialize(Unknown Source)
    at examples.sensor.SensorBrowser.<init>(Unknown Source)
    at java.lang.Class.newInstanceImpl(Native Method)
    at java.lang.Class.newInstance(Unknown Source)
    at com.symbian.j2me.midp.runtimeV2.Application.constructAction(Unknown Source)
    at com.symbian.j2me.midp.runtimeV2.Application.startRequest(Unknown Source)
    at com.symbian.j2me.midp.runtimeV2.Application.event(Unknown Source)
    at co

  2. #2
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    Re: Mobile Sensor API (JSR-256) Add-on for Nokia 5800 XpressMusic

    I have the same problem when I call
    Code:
    SensorManager.findSensors(null, null)
    . But why?
    Probably an error in the jsr-256 add-on.

  3. #3
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    1

    Re: Mobile Sensor API (JSR-256) Add-on for Nokia 5800 XpressMusic

    Hi guys,

    It seems that I solved the problem !!!
    I had identical issue as You (java.lang.Error: Exception in static initializer: java.lang.NumberFormatException). Because I'm from Poland and my phone language was Polish, I suspected that this error is caused by parsing decimal number with invalid decimal point character (in Poland we use comma for this, ie: Pi equals 3,14). But the most popular in the world is UK format, which use point as separator (ie: 3.14). So i tried to change phone language in my Nokia 5800 (Menu -> Settings -> Phone -> Language -> Phone Language) to ENGLISH. Next I run the TestMidlet again, and it Worked !!!
    It seems, that current API version has a bug, that it assumes the point (.) as decimal separator and during parsing, if You have set phone language to one that uses for example comma (,) it generates error at parsing (NumberFormatException).

    Best Regards,
    MM

  4. #4
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    Re: Mobile Sensor API (JSR-256) Add-on for Nokia 5800 XpressMusic

    It worked fine when I passed the phone to English.

    Thanks ritchey007 ,

  5. #5
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    7

    Re: Mobile Sensor API (JSR-256) Add-on for Nokia 5800 XpressMusic

    Yes, it works.

    Thank you very much.

  6. #6
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    Nov 2006
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    270

    Re: Mobile Sensor API (JSR-256) Add-on for Nokia 5800 XpressMusic

    Do you know if Nokia 5800 supports JSR256 with the default firmware or it
    need Java Runtime 2 to support it?
    thanks.

  7. #7
    Nokia Developer Champion
    Join Date
    Mar 2003
    Posts
    4,104
    That add-on for the Mobile Sensor API (and its bug) seems to be merged into the main development branch: My factory new Nokia N86 8MP (Firmware 21, Java Runtime 1.0.5) has the same issue.
    Code:
    boolean supportsMobileSensor()
    {
    	boolean b = false;
    	try
    	{
    		Class.forName("javax.microedition.sensor.SensorManager");
    		b = true;
    	}
    	// standard case, if not supported
    	catch (ClassNotFoundException e) { b = false; }
    	// bad language setting with Nokia implementation
    	catch (Error e) { b = false; }
    	
    	return b;
    }
    The same happens for a Nokia E72 (Firmware 21, Java Runtime 1.0.5).
    Last edited by traud; 2010-01-29 at 08:37.

  8. #8
    Nokia Developer Expert
    Join Date
    Aug 2007
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    1,595

    Re: Mobile Sensor API (JSR-256) Add-on for Nokia 5800 XpressMusic

    Update, here is the published Known Issue in Forum Nokia Wiki:

    KIJ001586 - SensorManager does not work with non-English phone languages in S60 3rd Edition, Feature Pack 2

    Basically almost all affected devices have got this issue fixed in newer firmware, but unfortunately there is one device (Nokia N86 8MP) which is recognized not to have a firmware update with the fix and therefore Mobile Sensor API can only be used if English is set as phone language for that device.

    Regards,
    r2j7
    [URL="http://library.forum.nokia.com/java"][B] >>> Java Developer's Library <<<[/B][/URL]
    [URL="https://www.developer.nokia.com/Resources/Support/Technical_support.xhtml"] [B]>>> Technical Support for Java ME development <<<[/B][/URL]
    [URL="https://publish.ovi.com/info/"][B]>>> Nokia Publish: reach millions of Nokia users worldwide through Nokia Store <<<[/B][/URL]

  9. #9
    Registered User
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    Bangalore, India
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    49

    Re: Mobile Sensor API (JSR-256) Add-on for Nokia 5800 XpressMusic

    Visit HERE For code sample and complete information on JSR 256.. Mobile Sensor API
    Regards
    Nilanchala

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