Hey everyone, quick question regarding state in co...

# compose

[jkm]

Hey everyone, quick question regarding state in compose.
Say I have a screen full of checkboxes, and I receive a model that details whether or not they should be toggled. i.e. data class Model( var one: Boolean, var two: Boolean, //etc)

do I:
A. declare each of the checkboxes states ? i.e. var someState by remember { mutableStateOf(myModel.one) }
B. declare the state of the collection of checkboxes as var someState by remember { mutableStateOf(myModel) }

I would like to do B, but I’m struggling with the state change callbacks, I’m thinking I might have to do A

[Will Shelor]

I think if you want to use the second, you would need to say someState = someState.copy(two = true), or something like that. I believe x by remember will redraw only when the object is directly assigned, not when the states within it are updated.

[jkm]

Thanks! You’re correct, didn’t realise a change to State<T>.someProperty wouldn’t trigger a recomposition