is there some kind of `immutableStateOf(value)`? ...

# compose

[dimsuz]

is there some kind of immutableStateOf(value)?

Usecase:

val state = when (orientation) {
  Orientation.Landscape -> animateDpAsState(32.dp)
  Orientation.Portrait -> immutableStateOf(16.dp)
}

I could use mutableStateOf(16.dp) of course, just thought maybe something more lightweight exists.

[Adam Powell]

why would you use a constant argument to animateDpAsState? 🤔

[dimsuz]

do you mean 32.dp above? or the state value itself?

I want to animate only in landscape, othewise component is the same:

MyComponent(offset = state.value) // animates offset only in landscape, otherwise it's always 16.dp

[dimsuz]

ah, actually there's an if there, sorry: animateDpAsState(if (someFlag) 0.dp else 32.dp). otherwise the question is still valid.

[Adam Powell]

I'd probably fold it into the when with something like

animateDpAsState(
  when (orientation) {
    Landscape -> if (someFlag) 0.dp else 32.dp
    Portrait -> 16.dp
  }
)

and as a bonus you can get animation between those two for things like window resizing changing the orientation

[Adam Powell]

but no, there's no immutableStateOf and you should never need one. Either use the constant directly, or if you're making a late-binding decision and you want a snapshot read to occur more deeply in your UI somewhere, use a () -> T lambda instead of trying to construct a State<T> around something

[dimsuz]

I see, that's a nice bonus!