Re: [xmlvm-users] Implementing new class in Objective-C

[Tomas V. <tom...@gm...>]

Hi,

Arno:
Yes, that's what I thought. So right now I'm trying to do a demo using only
Java and cross compiling it to Obj-C code. I'm also trying to implement
missing classes (now UITextViewDelegate) by first writing the stub in Java,
cc:ing it to Obj-C and filling in the methods.

Personally I found the C backend code much harder to understand but I
haven't done a lot of C or Obj-C coding. How exactly is supposed to be used?

Panayotis:
Thank you, that is a perfect example. I'm currently trying to implement
everything in Java but I think I will try something similar to the Zip
plugin after to evaluate the options.


If I implement classes on my own I would of course like to contribute and
upload them. What worries me is that as I haven't done any Obj-C before, I'm
currently reading about it and how it works so I'm not completely lost. When
I'm implementing a new class I'm also looking at other similar classes that
are implemented. But I can't be 100% sure that it's correct, how should I
proceed then?

Best regards,
Tomas Vestelind

On 30 November 2010 19:37, Panayotis Katsaloulis <pan...@pa...>wrote:

>
> On Nov 30, 2010, at 8:18 PM, Arno Puder wrote:
>
> >
> > the preferred way is to do as much as possible in Java and then
> > cross-compile to Objective-C. If you already have an Objective-C class
> > that you want to expose in Java, you need to create a Java stub and then
> > write some "glue" code in Objective-C that bridges the Java API to the
> > Objective-C API. This is necessary because of the certain differences
> > between the languages. E.g., we have to use name mangling when
> > cross-compiling from Java to Objective-C and the "glue" code needs to do
> > a mapping from the mangled version of a name to the original version.
>
> You can also take advantage of the "plugin" mechanism.
> To see a demo of this convenient way, have a look at the directory
> demo/iphome/plugins/Zip
>
>
>
>
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