Getting ListView to work in .kv files

[woolly.t...@gmail.com]

Hi everyone! I'm new to Kivy and have been bashing my head against this problem for a few hours now. I've read the list view documentation along with its source code and exhausted my google-fu. 

How do you get ListView to work in a .kv file? The two solutions given in examples, list_simple_in_kv.py and list_simple_in_kv_2.py, cause an error in python. I've attached the program output as error.txt. Essentially, ListView raises an exception, "item_strings needed or an adapter". I get the same error when I try to implement a basic list in a Kivy file, like so:

 ListView:
      item_strings:[str(index) for index in xrange(100)]

raises exception "item_strings needed or an adapter".

Can anyone shed light on what is going on here? How are you supposed to implement a ListView in a .kv file?

Kivy 1.5.1, mobile installation

Python 2.7.3

[Jeff Pittman]

Fixed in master I think, but please see https://github.com/kivy/kivy/issues/970 and confirm that we are running the same example.

Thanks,

Jeff

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<error.txt>

[James Kwan]

Hi I'm new and am having the same problem what does it mean to use the master?

[krister viirsaar]

"fixed in master" I think (i'm not super knowledgeable) means they fixed this issue in the main program. This means it wasn't the users problem, but Kivys.

[Sam Brotherton]

When you work on a project using git (which kivy uses), you generally organize your code into branches so that you can work on new features/bug fixes without breaking the main copy. master is the git branch that is supposed to always contain a working, stable copy of the program. So generally they'll work on a feature in some other branch, and then when it is 100% ready and tested they'll merge that branch into master. If you go to https://github.com/kivy/kivy and click on the button that says branch:master, you can see all the other branches that are being worked on.

Source control is a really good thing; you should start using it!

On Tue, Mar 5, 2013 at 1:48 PM, krister viirsaar <krister....@gmail.com> wrote:

"fixed in master" I think (i'm not super knowledgeable) means they fixed this issue in the main program. This means it wasn't the users problem, but Kivys.

[James Kwan]

So then if it is fixed how do I get it to work in my code? Do I need to re-install kivy?

On Tuesday, February 19, 2013 9:11:32 PM UTC-5, woolly.t...@gmail.com wrote:

[Sam Brotherton]

depends on how you installed kivy in the first place, and what OS you're using. If you're on linux, just go to a directory and run

sudo pip uninstall kivy

git clone https://github.com/kivy/kivy.git

cd kivy

sudo python setup.py install

And you should be good to go.

--

[James Kwan]

Sorry I forgot to mention that I'm on Win 7. I installed kivy using the package on the site for Windows.

[Gabriel Pettier]

then either you wait for the new release, or you upgrade your kivy
install using this procedure:
http://kivy.org/docs/installation/installation-windows.html#use-development-kivy

cheers

On Tue, Mar 05, 2013 at 02:42:11PM -0800, James Kwan wrote:
> Sorry I forgot to mention that I'm on Win 7. I installed kivy using the
> package on the site for Windows.
>
> On Tuesday, March 5, 2013 5:22:04 PM UTC-5, Sam Brotherton wrote:
> >
> > depends on how you installed kivy in the first place, and what OS you're
> > using. If you're on linux, just go to a directory and run
> >
> > sudo pip uninstall kivy
> > git clone https://github.com/kivy/kivy.git
> > cd kivy
> > sudo python setup.py install
> >
> > And you should be good to go.
> >
> >

> > On Tue, Mar 5, 2013 at 2:19 PM, James Kwan <kwanj...@gmail.com<javascript:>

> > > wrote:
> >
> >> So then if it is fixed how do I get it to work in my code? Do I need to
> >> re-install kivy?
> >>
> >>
> >> On Tuesday, February 19, 2013 9:11:32 PM UTC-5, woolly.t...@gmail.comwrote:
> >>
> >>> Hi everyone! I'm new to Kivy and have been bashing my head against this
> >>> problem for a few hours now. I've read the list view documentation

> >>> <http://kivy.org/docs/api-kivy.uix.listview.html>along with its source

> >>> code and exhausted my google-fu.
> >>>
> >>> How do you get ListView to work in a .kv file? The two solutions given

> >>> in examples, list_simple_in_kv.py<https://github.com/kivy/kivy/blob/master/examples/widgets/lists/list_simple_in_kv.py>and
> >>> list_simple_in_kv_2.py<https://github.com/kivy/kivy/blob/master/examples/widgets/lists/list_simple_in_kv_2.py>,

> >>> cause an error in python. I've attached the program output as error.txt.
> >>> Essentially, ListView raises an exception, "item_strings needed or an
> >>> adapter". I get the same error when I try to implement a basic list in a
> >>> Kivy file, like so:
> >>> ListView:
> >>> item_strings:[str(index) for index in xrange(100)]
> >>> raises exception "item_strings needed or an adapter".
> >>>
> >>> Can anyone shed light on what is going on here? How are you supposed to
> >>> implement a ListView in a .kv file?
> >>>
> >>> Kivy 1.5.1, mobile installation
> >>> Python 2.7.3
> >>>
> >> --
> >> You received this message because you are subscribed to the Google Groups
> >> "Kivy users support" group.
> >> To unsubscribe from this group and stop receiving emails from it, send an

> >> email to kivy-users+...@googlegroups.com <javascript:>.

[James Kwan]

Thanks for all the help.