From cf83b790f5872e9e99676a30330c90ef1b4ebf6f Mon Sep 17 00:00:00 2001
From: Matt Sullivan <matt.j.sullivan@gmail.com>
Date: Wed, 18 Jul 2018 15:44:35 -0700
Subject: [PATCH] Chevrons fade out completely on month picker scroll event
 (#19422)

---
 packages/flutter/lib/src/material/date_picker.dart   | 4 ++--
 packages/flutter/test/material/date_picker_test.dart | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/flutter/lib/src/material/date_picker.dart b/packages/flutter/lib/src/material/date_picker.dart
index bfb54794c3..b40653cd61 100644
--- a/packages/flutter/lib/src/material/date_picker.dart
+++ b/packages/flutter/lib/src/material/date_picker.dart
@@ -536,9 +536,9 @@ class _MonthPickerState extends State<MonthPicker> with SingleTickerProviderStat
 
     // Setup the fade animation for chevrons
     _chevronOpacityController = new AnimationController(
-      duration: const Duration(milliseconds: 500), vsync: this
+      duration: const Duration(milliseconds: 250), vsync: this
     );
-    _chevronOpacityAnimation = new Tween<double>(begin: 1.0, end: 0.5).animate(
+    _chevronOpacityAnimation = new Tween<double>(begin: 1.0, end: 0.0).animate(
       new CurvedAnimation(
         parent: _chevronOpacityController,
         curve: Curves.easeInOut,
diff --git a/packages/flutter/test/material/date_picker_test.dart b/packages/flutter/test/material/date_picker_test.dart
index 4241e9b7f9..53f1108c0d 100644
--- a/packages/flutter/test/material/date_picker_test.dart
+++ b/packages/flutter/test/material/date_picker_test.dart
@@ -671,7 +671,7 @@ void _tests() {
     await gesture.moveBy(const Offset(50.0, 100.0));
     await tester.pumpAndSettle();
     for(RenderAnimatedOpacity renderer in chevronRenderers) {
-      expect(renderer.opacity.value, equals(0.5));
+      expect(renderer.opacity.value, equals(0.0));
       expect(renderer.opacity.status, equals(AnimationStatus.completed));
     }