```AnimatedVisibility visible = value = null if value = null

Question

```AnimatedVisibility visible = value = null if value = null Text value ``` is this the correct way of using `AnimatedVisibility` with `Nullable` values feels a bit janky with the inner null check again

vide · Answer

You probably want to use `AnimatedContent` instead It provides the state for the content lambda ```AnimatedContent state = value if value = null Text value ``` It uses `AnimatedVisibility` internally

ursus · Answer

works thanks

ursus · Answer

a follow up though I override the transitionSped as I want a fade in and out only via `transitionSpec fadeIn togerherWith fadeOut ` but there is some sort of horizontal sliding going on am I doing it wrong

vide · Answer

can you post the complete call to animatedcontent

vide · Answer

don t remember the exact api right now but you might have a size transition try adding `using null` to the end

ursus · Answer

< vide> here with a video ```Row modifier = Modifier fillMaxWidth horizontalArrangement = Arrangement SpaceBetween verticalAlignment = Alignment CenterVertically Text text = fieldName style = MaterialTheme typography caption fontWeight = FontWeight Medium AnimatedContent targetState = error transitionSpec = fadeIn togetherWith fadeOut label = if it = null Text text = it color = MaterialTheme colors onErrorBackground style = MaterialTheme typography caption maxLines = 1 ``` as you can see there is this sliding amp scaling effect as well weird

ursus · Answer

whats funny is even if I change it to ```transitionSpec = fadeIn animationSpec = tween 1000 togetherWith fadeOut animationSpec = tween 1000 ``` i e just a longer duration just to see it better its the same speed as before the slide scale is still there same speed but the concurrent fade is slower looks like a bug to me

ursus · Answer

Screen Recording 2023 10 15 at 01 06 36 mov

ursus · Answer

```Crossfade targetState = error label = dwq ``` this works thought even thought I didnt even know about it as crossfade seems like just a specification of `AnimatedContent Visibility` transition no Why hardcode a single transition that way when there are endless of combinations weird api

Albert Chang · Answer

You don t need the inner null check when using `AnimatedVisibility` Actually adding that will break the animation

vide · Answer

< ursus> did you try disabling the SizeTransform

vide · Answer

```transitionSpec = fadeIn togetherWith fadeOut using null ```