Hi guys, I have a mutableStateListOf named descriptionListState and I want LaunchedEffect to be trig...

# compose

[the great warrior]

Hi guys, I have a mutableStateListOf named descriptionListState and I want LaunchedEffect to be triggered when the mutableStateListOf changes. I tried converting mutableStateListOf to list, but it didn't work. Is there any solution?

val descriptionListState = remember{ mutableStateListOf("") }

LaunchedEffect(descriptionListState.toList()) {
    alarmViewModel.changeCreateAlarmState(
        createAlarmState.copy(description = descriptionListState.joinToString(" "))
    )
}

[robercoding]

Never used it, but does this work?

val descriptionListState = remember{ mutableStateListOf("") }

LaunchedEffect(Unit) {
    snapshotFlow {
        descriptionListState
    }.collect {
        alarmViewModel.changeCreateAlarmState(
            createAlarmState.copy(description = it.toList().joinToString(" "))
        )
    }
}

[robercoding]

Notice that it's reacting to mutable snapshot and whenever it changes then inside collect you take the most recent value and convert it to a list

[Zun]

You can also just move that list to your ViewModel and keep your logic there. Less spaghetti!

[robercoding]

Agree

[the great warrior]

Thank you so much Roberto Fuentes. I’ve tried your answer, and it worked.

[Michael Paus]

The fact that it works is no indication that it is also a good solution. You should really reconsider @Zun s comment!