android - 如何使用 Jetpack Compose 创建动画？

Question

我想在此代码实验室中使用 Compose 而不是 ConstraintLayout:https://codelabs.developers.google.com/codelabs/advanced-android-kotlin-training-property-animation/#1

如何将任何动画应用于 Compose？

Answer 1

从 beta08 开始，现在更容易了

@Composable
fun RotateLoader() {
    val animation = rememberInfiniteTransition()
    val angle = animation.animateFloat(
        initialValue = 0f,
        targetValue = 360f,
        animationSpec = infiniteRepeatable(
            animation = tween(
                durationMillis = 1000,
                easing = LinearEasing
            ),
            repeatMode = RepeatMode.Restart
        )
    )
    Icon(
        painter = painterResource(id = R.drawable.ic_loader),
        contentDescription = null,
        modifier = Modifier.rotate(angle.value)
    )
}