android - 如何在 Jetpack Compose 中为 TextStyle 设置动画？

Question

当某个 bool 变量为真时，我的一个可组合项中的文本被删除线。如何在重组时为 TextStyle 中的这种变化设置动画，以便该行淡入而不是突然出现和消失？

@Composable
fun MyComposable(
    completed: Boolean
) {
    val textStyle = TextStyle(textDecoration = if (completed) TextDecoration.LineThrough else null)

    Text(
        text = title,
        color = textColor,
        style = textStyle,
        modifier = Modifier.align(Alignment.CenterVertically)
    )

Answer 1

不确定是否存在为 TextStyle 设置动画的方法。
这不是一个很好的解决方案，只是一种解决方法:

Box() {
    AnimatedVisibility(
        visible = !completed,
        enter = fadeIn(
            animationSpec = tween(durationMillis = duration)
        ),
        exit = fadeOut(
            animationSpec = tween(durationMillis = duration)
        )) {
        Text(
            text = title,
            style = TextStyle(textDecoration=null)
        )
    }
    AnimatedVisibility(
        visible = completed,
        enter = fadeIn(
            animationSpec = tween(durationMillis = duration)
        ),
        exit = fadeOut(
            animationSpec = tween(durationMillis = duration)
        )) {
        Text(
            text = title,
            style = TextStyle(textDecoration = TextDecoration.LineThrough),
        )
    }
}