Bind ItemsSource de um enum

[Thiago Lacerda]

Hi Andy!

   Is that possible?

Best regards

[Thiago Lacerda]

Sorry, i put the title in portuguese! the correct is:

Bind ItemsSource from an enum

[Thiago Lacerda Siqueira]

I've made an implementation using converters:

@SuppressWarnings("rawtypes")

public class ENUMITEMSOURCE extends Converter<ArrayListObservable> {

public ENUMITEMSOURCE(IObservable<?>[] dependents) {

super(ArrayListObservable.class, dependents);

}

@SuppressWarnings({ "unchecked" })

@Override

public ArrayListObservable calculateValue(Object... args) throws Exception {

if (args[0] == null)

return null;

if (!Enum.class.isAssignableFrom(args[0].getClass())) 

return null;

Enum<?> e = (Enum<?>) args[0];

return new ArrayListObservable(e.getClass(), e.getClass().getEnumConstants());

}

}

public class ENUM extends Converter<Integer> {

public ENUM(IObservable<?>[] dependents) {

super(Integer.class, dependents);

}

@Override

public Integer calculateValue(Object... args) throws Exception {

if (args[0] == null)

return null;

if (!Enum.class.isAssignableFrom(args[0].getClass())) 

return null;

Enum<?> e = (Enum<?>) args[0];

return Arrays.asList(e.getClass().getEnumConstants()).indexOf(e);

}

}

and the markup is:

binding:itemSource="ENUMSOURCE(type)"

binding:selectedPosition="ENUM(type)"

where type an observable of my enum type.

what do you think?

PS: I did not find a way to register my custom converters like i do with BindingProviders... i tried to declare it in markup with full path of package ( how is described in http://code.google.com/p/android-binding/wiki/BindingSyntax ), but it not work... Can you help me on this?

Um Abraço,


Thiago Lacerda

2012/8/10 Thiago Lacerda <thia...@gmail.com>

[Andy Tsui]

you can declare your custom converter under gueei.binding.converters package, it still works