我也遇到过类似的问题，在我的例子中，我使用LaunchedEffect将进度从零更新到所需的值

@Composable
fun MyIndicator(indicatorProgress: Float) {
   var progress by remember { mutableStateOf(0f) }
    val progressAnimDuration = 1500
    val progressAnimation by animateFloatAsState(
        targetValue = indicatorProgress, 
        animationSpec = tween(durationMillis = progressAnimDuration, easing = FastOutSlowInEasing)
    )
    LinearProgressIndicator(
        modifier = Modifier
            .fillMaxWidth()
            .clip(RoundedCornerShape(20.dp)), // Rounded edges
        progress = progressAnimation
    )
    LaunchedEffect(indicatorProgress) {
        progress = indicatorProgress
    }
}

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我在animateFloatAsState中发现了一个非常重要的参数visibilityThreshold，你必须将其设置为0.001f才能使其工作。

在我的情况下，它是工作-

var animationPlayed by remember {
            mutableStateOf(false)
        }
        val currentPercentage = animateFloatAsState(targetValue =
            if(animationPlayed) percentage else 0f,
            animationSpec = tween( durationMillis = 4000)
        )
        LaunchedEffect(key1 = true){
            animationPlayed=true
        }
    
    LinearProgressIndicator(...progress = currentPercentage)

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您可以使用Animatable，但需要LaunchEffect来触发动画

val percent = remember { Animatable(0f) }

  LaunchedEffect(key1 = Unit, block = {
        percent.animateTo(
            targetValue = yourPercentage ,
            animationSpec = tween(
                durationMillis = (1000 * (1f - percent.value)).toInt(),
                easing = FastOutLinearInEasing
            )
        )
    })

     LinearProgressIndicator(
            progress = percent.value
        )

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我是这样做的。我使用进度指示器来模拟加载效果，然后跳转到登录活动。

var currentProgress by remember { mutableFloatStateOf(0f) }
val context = LocalContext.current

// jump to Login Activity after animation
val currentPercentage by animateFloatAsState(
    targetValue = currentProgress,
    animationSpec =  tween( durationMillis = 1000, easing = LinearEasing),
    label = "progress",
    finishedListener = { _ -> context.startActivity(Intent(context, LoginActivity3::class.java)) }
)

LaunchedEffect(key1 = Unit){
    currentProgress = 1f
}

Box(modifier = Modifier.fillMaxSize(),contentAlignment = Alignment.Center)
{
    Column(horizontalAlignment = Alignment.CenterHorizontally)
    {
        LinearProgressIndicator(
            modifier = Modifier.width(220.dp).height(5.dp),
            progress = currentPercentage,
            color = colorResource(R.color.green_500)
        )
    }
}

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我通过在0处设置一个可变状态来解决它，然后在代码结束时将其设置为null以触发重组。

{
var starterProgressValue by remember { mutableStateOf<Float?>(0f) }
val actualProgress = 1f

AnimatedProgressBar(
    progress = starterProgressValue ?: actualProgress,
    duration = 3000,
    modifier = Modifier
        .align(Alignment.CenterStart)
        .height(12.dp)
        .fillMaxWidth()
)

starterProgressValue = null

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}