通过Nav Augments在android组合导航中输入Transition参数

我有一个导航组合,它将参数传递给开始动画,特别是 scaleIn 和 scaleOut 物业。然而 offSetX 和 offSetY 值为null。

但问题是:当我从以下位置访问这些值时 it.arguments ,它们显示了正确的值。你能帮我理解为什么会发生这种情况吗?

composable(
    route = NavigationRoute.PreviewImage.route,
    deepLinks = listOf(navDeepLink { uriPattern = "suntuk://preview/{id}/{type}/{x}/{y}" }),
    arguments = listOf(
        navArgument("id") { type = NavType.StringType },
        navArgument("type") { type = NavType.IntType },
        navArgument("x") { type = NavType.FloatType },
        navArgument("y") { type = NavType.FloatType }
    ),
    enterTransition = {
        val offsetX = initialState.arguments?.getFloat("x") ?: 0f
        val offsetY = initialState.arguments?.getFloat("y") ?: 0f
        scaleIn(
            animationSpec = tween(durationMillis = 5000),
            transformOrigin = TransformOrigin(
                offsetX,
                offsetY
            )
        )
    },
    exitTransition = {
        val offsetX = initialState.arguments?.getFloat("x") ?: 0f
        val offsetY = initialState.arguments?.getFloat("y") ?: 0f
        Timber.i("Offset: $offsetX, $offsetY")
        scaleOut(
            animationSpec = tween(durationMillis = 5000),
            transformOrigin = TransformOrigin(
                offsetX,
                offsetY
            )
        )
    }
) {
    val id = it.arguments?.getString("id") ?: ""
    val type = it.arguments?.getInt("type") ?: 0
    val x = it.arguments?.getFloat("x") ?: 0f
    val y = it.arguments?.getFloat("y") ?: 0f
    Timber.i("Preview image: $id, $type, $x, $y")
    val viewModel: PreviewImageViewModel = koinViewModel { parameterSetOf(id, type) }

    PreviewImageScreen(
        viewModel = viewModel,
        onBack = {
            navController.navigateUp()
        }
    )
}