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

[yzacarias]

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

[bacconokia]

I have the same problem when I call

SensorManager.findSensors(null, null)

. But why?
Probably an error in the jsr-256 add-on.

[ritchey007]

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

[yzacarias]

It worked fine when I passed the phone to English.

Thanks ritchey007 ,

[bacconokia]

Yes, it works.

Thank you very much.

[sblantipodi]

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

[traud]

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.

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).

[r2j7]

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

[nilanchalapanigrahy]

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