From b730edc1eb15d665d60305b28bb8679b8912dd4c Mon Sep 17 00:00:00 2001
From: meyou <2636699780@qq.com>
Date: Sat, 16 May 2026 17:27:39 +0800
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通过 withFrameNanos 在动画前预留一帧，让年视图先完成首次合成与
布局，避免 HorizontalPager + YearGridView 的初次合成开销吃掉动
画时间段。与之前的「常驻合成」方案相比，本次只调时序、不动渲染
结构，因此不会再触发年视图层在隐藏时拦截触摸事件的回归。
---
 .../commonMain/kotlin/plus/rua/project/CalendarViewModel.kt   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/shared/src/commonMain/kotlin/plus/rua/project/CalendarViewModel.kt b/shared/src/commonMain/kotlin/plus/rua/project/CalendarViewModel.kt
index 29d3a68..a2454f9 100644
--- a/shared/src/commonMain/kotlin/plus/rua/project/CalendarViewModel.kt
+++ b/shared/src/commonMain/kotlin/plus/rua/project/CalendarViewModel.kt
@@ -7,6 +7,7 @@ import androidx.compose.animation.core.tween
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
+import androidx.compose.runtime.withFrameNanos
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
@@ -101,6 +102,9 @@ class CalendarViewModel(
                 yearViewYear = selectedDate.year
                 isYearView = true
                 _yearViewAnimatable.snapTo(0f)
+                // 等待一帧让年视图先完成首次合成与布局，
+                // 避免首次进入年视图时动画时间被合成开销吞掉。
+                withFrameNanos { }
                 _yearViewAnimatable.animateTo(
                     1f, tween(400, easing = FastOutSlowInEasing)
                 )