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Replies:
4
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Last Post:
Oct 21, 2008 2:48 AM
by: cknappe
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NullPointerException in TextArea
Posted:
Oct 19, 2008 11:04 PM
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Hi,
sometimes I get a NullPointerException when calling setText() on a TextArea. This is the trace...
NullPointerException
No detail message
gaia_final-1
TextArea
getLines
0xBD26
gaia_final-1
TextArea
isScrollableY
0xBAA6
gaia_final
Component
isScrollable
0x1604
gaia_final
Component
<private>
0x1568
gaia_final
Component
paintInternal
0x1CF4
gaia_final
Component
paintComponent
0x137C
gaia_final
Component
paintComponent
0x1265
gaia_final-1
Implementation
paintDirty
0x7A17
gaia_final-1
Implementation
edtLoopImpl
0x7CD7
gaia_final-1
Implementation
<private>
0x83A7
net_rim_cldc-1
Thread
run
0xB4B7
I am using the lib from 14.08.2008 so I don't know if this has been fixed at all.
Regards, Christian
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Re: NullPointerException in TextArea
Posted:
Oct 20, 2008 5:01 AM
in response to: cknappe
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Hi,
this occurs when setting text from a separate thread. Make sure you
always invoke setText and the related methods from the EDT otherwise
you might trigger this race condition.
> Hi,
>
> sometimes I get a NullPointerException when calling setText() on a
> TextArea. This is the trace...
>
> NullPointerException
> No detail message
> gaia_final-1
> TextArea
> getLines
> 0xBD26
> gaia_final-1
> TextArea
> isScrollableY
> 0xBAA6
> gaia_final
> Component
> isScrollable
> 0x1604
> gaia_final
> Component
> <private>
> 0x1568
> gaia_final
> Component
> paintInternal
> 0x1CF4
> gaia_final
> Component
> paintComponent
> 0x137C
> gaia_final
> Component
> paintComponent
> 0x1265
> gaia_final-1
> Implementation
> paintDirty
> 0x7A17
> gaia_final-1
> Implementation
> edtLoopImpl
> 0x7CD7
> gaia_final-1
> Implementation
> <private>
> 0x83A7
> net_rim_cldc-1
> Thread
> run
> 0xB4B7
>
> I am using the lib from 14.08.2008 so I don't know if this has been
> fixed at all.
>
> Regards, Christian
> [Message sent by forum member 'cknappe' (cknappe)]
>
> http://forums.java.net/jive/thread.jspa?messageID=310127
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@lwuit.dev.java.net
> For additional commands, e-mail: users-help@lwuit.dev.java.net
>
Shai Almog
http://lwuit.blogspot.com/
[att1.html]
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Re: NullPointerException in TextArea
Posted:
Oct 20, 2008 8:35 AM
in response to: Shai Almog
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OK, but this is done from a Class which implements avax.microediton.location.LocationListener. After locationUpdated is called I show it in my UI. If this is a problem - I will implement this in an other way.
Christian
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Re: NullPointerException in TextArea
Posted:
Oct 21, 2008 12:20 AM
in response to: cknappe
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The location listener will be invoked on the MIDP thread. You will
need to use our callSerially (not MIDP's) to transition back to the
EDT from the event.
> OK, but this is done from a Class which implements
> avax.microediton.location.LocationListener. After locationUpdated
> is called I show it in my UI. If this is a problem - I will
> implement this in an other way.
>
> Christian
> [Message sent by forum member 'cknappe' (cknappe)]
>
> http://forums.java.net/jive/thread.jspa?messageID=310413
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@lwuit.dev.java.net
> For additional commands, e-mail: users-help@lwuit.dev.java.net
>
Shai Almog
http://lwuit.blogspot.com/
[att1.html]
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Re: NullPointerException in TextArea
Posted:
Oct 21, 2008 2:48 AM
in response to: Shai Almog
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I did as you said. Works fine in simulator and I think the test on device will also work.
Thanks
> The location listener will be invoked on the MIDP
> thread. You will
> need to use our callSerially (not MIDP's) to
> transition back to the
> EDT from the event.
>
> > OK, but this is done from a Class which implements
>
> avax.microediton.location.LocationListener. After
> locationUpdated
> > is called I show it in my UI. If this is a problem
> - I will
> > implement this in an other way.
> >
> > Christian
> > [Message sent by forum member 'cknappe' (cknappe)]
> >
> >
> http://forums.java.net/jive/thread.jspa?messageID=3104
> 13
> >
> >
> ------------------------------------------------------
> ---------------
> > To unsubscribe, e-mail:
> users-unsubscribe@lwuit.dev.java.net
> > For additional commands, e-mail:
> users-help@lwuit.dev.java.net
> >
>
> Shai Almog
> http://lwuit.blogspot.com/
>
> [att1.html]
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