Hello, trying to achieve a Todo List in Compose, h...

# compose

[Luca Nicoletti]

Hello, trying to achieve a Todo List in Compose, however, when I create a @Model class which has a list, adding elements to that list don’t trigger the drawing of the model on the screen. In order to have it working I added a counter to that model class. Increasing that counter whenever I add something to the list triggers the drawing of the model on the screen. (https://gist.github.com/lnicolet/039d2fe76e19e859582e32625ac411e7, https://gist.github.com/lnicolet/cb49c5a4021efc3b784bf95ec5755321). Working and not working examples in the links. Is there a different way to have it working with lists?

[themishkun]

As far as I know, @Model tracks only changes of its properties. You are using MutableList, so you don't trigger property setter. Use List instead and you will be fine

[Luca Nicoletti]

Thanks! Another question, how can I achieve tracking changes on items inside the list itself being propagated to the class which wraps the list? E.g.: changing the isDone to trigger an update

[shikasd]

Not sure, but you can try to use @Model on such classes as well.

[Luca Nicoletti]

I am already 🙂

[themishkun]

@Luca Nicoletti I saw @Pivotal annotation does something like this

[wasyl]

Hey @Luca Nicoletti Did you manage to get your list to work?