Re: [flexcoders] Re: Cannot access a property or method of a null object reference at mx.controls::Tree/::buildUpCollectionEvents()
You're right :) But still no exception, it works fine under HF1 and HF3. -Josh On Thu, Jul 3, 2008 at 2:51 AM, Sergey Kovalyov < [EMAIL PROTECTED]> wrote: > May be so. But I want to find relevant workaround. Unfortunately, I have > no possibility to switch the platform. > > On Tue, Jul 1, 2008 at 4:08 PM, valdhor <[EMAIL PROTECTED]> wrote: > >> I don't use Flex 2.0.1 (I use Flex 3). >> >> I ran your app in Flex 3 and it works fine - ie. no exception is thrown. >> >> Could this be a bug in Flex 2.0.1? >> . >> >> > > -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." :: Josh 'G-Funk' McDonald :: 0437 221 380 :: [EMAIL PROTECTED]
Re: [flexcoders] Re: Cannot access a property or method of a null object reference at mx.controls::Tree/::buildUpCollectionEvents()
May be so. But I want to find relevant workaround. Unfortunately, I have no possibility to switch the platform. On Tue, Jul 1, 2008 at 4:08 PM, valdhor <[EMAIL PROTECTED]> wrote: > I don't use Flex 2.0.1 (I use Flex 3). > > I ran your app in Flex 3 and it works fine - ie. no exception is thrown. > > Could this be a bug in Flex 2.0.1? > . > > >
Re: [flexcoders] Re: Cannot access a property or method of a null object reference at mx.controls::Tree/::buildUpCollectionEvents()
Probably, you have not selected the first item before clicking on a button. That's why new item has not been added. See this: var parentXML : XML = XML(tree.selectedItem); var newItemXML : XML = ; tree.dataDescriptor.addChildAt(parentXML, newItemXML, parentXML.length()); On Wed, Jul 2, 2008 at 2:50 AM, Josh McDonald <[EMAIL PROTECTED]> wrote: > I'm not getting an exception, tried in 2.0.1HF1 and HF3. I'm not getting > any change on screen though. > > On Tue, Jul 1, 2008 at 11:08 PM, valdhor <[EMAIL PROTECTED]> wrote: > >> I don't use Flex 2.0.1 (I use Flex 3). >> >> I ran your app in Flex 3 and it works fine - ie. no exception is thrown. >> >> Could this be a bug in Flex 2.0.1? >> >> > -- > "Therefore, send not to know For whom the bell tolls. It tolls for thee." > > :: Josh 'G-Funk' McDonald > :: 0437 221 380 :: [EMAIL PROTECTED] > > >
Re: [flexcoders] Re: Cannot access a property or method of a null object reference at mx.controls::Tree/::buildUpCollectionEvents()
I'm not getting an exception, tried in 2.0.1HF1 and HF3. I'm not getting any change on screen though. On Tue, Jul 1, 2008 at 11:08 PM, valdhor <[EMAIL PROTECTED]> wrote: > I don't use Flex 2.0.1 (I use Flex 3). > > I ran your app in Flex 3 and it works fine - ie. no exception is thrown. > > Could this be a bug in Flex 2.0.1? > > -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." :: Josh 'G-Funk' McDonald :: 0437 221 380 :: [EMAIL PROTECTED]
Re: [flexcoders] Re: Cannot access a property or method of a null object reference?
Is the gateway property defined?
Other than that... from the code you have shown, I don't have a clue. ;-)
Mike
On Mon, Jun 9, 2008 at 9:39 AM, xaero <[EMAIL PROTECTED]> wrote:
> I add an Alert.show, and delete the CALL function, like this:
>
>
> var atClass:Object = new Object();
> atClass.atcls = ComboBox(event.target).selectedItem.data;
> Alert.show(atClass["atcls"],"ALERT");
> //gateway.call("cys.getStudents", new Responder(onResult, onFault),
> atClass); //line 51
>
> It can show the data of the item I selected!
>
> --- In flexcoders@yahoogroups.com , "Michael
> Schmalle"
> <[EMAIL PROTECTED]> wrote:
> >
> > Hi,
> >
> > From the look if it
> >
> > ;ComboBox(event.target).selectedItem
> >
> > seems to be where the null pointer is. Make sure you actually have a
> > selectedItem in the list.
> >
> > I have actually done this myself when testing and actually forgot to
> > 'select' an item before a service call.
> >
> > Mike
> >
>
>
>
--
Teoti Graphix, LLC
http://www.teotigraphix.com
Teoti Graphix Blog
http://www.blog.teotigraphix.com
You can find more by solving the problem then by 'asking the question'.
RE: [flexcoders] Re: Cannot access a property or method of a null object reference
If (dataProvider[i].hasOwnProperty("someValue") &&
dataProvider[i].someValue != null)
{
}
HTH
Steve
-Original Message-
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Nate Pearson
Sent: 17 February 2007 00:48
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Cannot access a property or method of a null
object reference
Does anyone know? This would help me immensely.
--- In [EMAIL PROTECTED]
ups.com, "napearson99" <[EMAIL PROTECTED]> wrote:
>
> What if the property.someValue does not exist? How do I check if the
> reference to dataprovider[i].someValue property is null?
>
> my dataprovider is an arraycollection and holds different objects.
> Some objects have .someValue property and some do not. When i try to
> step through it it doesn't like it when it expects a property but it
> is not there.
>
> "ReferenceError: Error #1069: Property Desc not found on
> DragDrop_inlineComponent1 and there is no default value."
>
> --- In [EMAIL PROTECTED]
ups.com, "Paul DeCoursey" wrote:
> >
> > if (dataprovider[i].someValue == null){
> > ...
> > }
> >
> > --- In [EMAIL PROTECTED]
ups.com, "napearson99" wrote:
> > >
> > > I often get this error and I "usually" know why. Does anyone
know how
> > > to check for a null reference?
> > >
> > > i.e.
> > >
> > > if (dataprovider[i].someValue is null){
> > > dothis();
> > > }
> > >
> > > Where dataprovider[i] does not have a someValue property. I bet
this
> > > is pretty simple and I just don't know the syntax. Thanks in
advance!
> > >
> >
>
RE: [flexcoders] Re: Cannot access a property or method of a null object reference
> Some objects have .someValue property and some do not.
It sounds like the objects in your dataProvider are instances of various
non-dynamic classes, where some of the classes declare a someValue
property and others don't.
Is this correct? If so, you don't ant to write code like
if (dataProvider[i].someValue == null)
because you get a ReferenceError if you access a nonexistend property of
a non-dynamic class. You should only write this if your dataProvider
objects are dynamic.
Instead, try
if (dataProvider[i].hasOwnProperty("someValue"))
- Gordon
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Nate Pearson
Sent: Friday, February 16, 2007 4:48 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Cannot access a property or method of a null
object reference
Does anyone know? This would help me immensely.
--- In flexcoders@yahoogroups.com
, "napearson99" <[EMAIL PROTECTED]> wrote:
>
> What if the property.someValue does not exist? How do I check if the
> reference to dataprovider[i].someValue property is null?
>
> my dataprovider is an arraycollection and holds different objects.
> Some objects have .someValue property and some do not. When i try to
> step through it it doesn't like it when it expects a property but it
> is not there.
>
> "ReferenceError: Error #1069: Property Desc not found on
> DragDrop_inlineComponent1 and there is no default value."
>
> --- In flexcoders@yahoogroups.com
, "Paul DeCoursey" wrote:
> >
> > if (dataprovider[i].someValue == null){
> > ...
> > }
> >
> > --- In flexcoders@yahoogroups.com
, "napearson99"
wrote:
> > >
> > > I often get this error and I "usually" know why. Does anyone
know how
> > > to check for a null reference?
> > >
> > > i.e.
> > >
> > > if (dataprovider[i].someValue is null){
> > > dothis();
> > > }
> > >
> > > Where dataprovider[i] does not have a someValue property. I bet
this
> > > is pretty simple and I just don't know the syntax. Thanks in
advance!
> > >
> >
>
