Hi, I have a composable as follows: ```var isLoading by remember(data) { mutableStateOf(false) } La...

# compose

[Fabio Berta]

Hi, I have a composable as follows:

var isLoading by remember(data) { mutableStateOf(false) }

LaunchedEffect(events) {
    events.collect {
        isLoading = true
    }
}

The idea is that I have a local isLoading state that I want to set to true when events emits something. I want to reset it to false, when data changes. This works perfectly the first time events emits. isLoading goes to true and when updated data comes in, it goes back to false.

[Fabio Berta]

However, the second time events emits, isLoading stays false.

[Fabio Berta]

even though isLoading = true is run

[Fabio Berta]

I'm struggling to understand whats going on, maybe I'm doing something wrong?

[Fabio Berta]

To answer my own question for anyone curious: when data changes, a new mutableStateOf is created but the LaunchedEffect is not keyed on it. Hence what happens when events emit is that it changes the previous mutable state which no one is listening to anymore.

[Fabio Berta]

The best solution I came up with so far is not to use delegation for isLoading and then passing it as a key to the effect.

[Fabio Berta]

Would anyone see better options?

[efemoney]

Another option is to also key launched effect on data