From 9aa3c58bdd92b828651118313b1710228caba863 Mon Sep 17 00:00:00 2001
From: Amit Kotlovski <amitbk@gmail.com>
Date: Thu, 22 Apr 2021 11:07:27 +0300
Subject: [PATCH 1/2] Fixing null-safety error with SliverStickyHeaderState

---
 lib/src/rendering/sliver_sticky_header.dart | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/src/rendering/sliver_sticky_header.dart b/lib/src/rendering/sliver_sticky_header.dart
index a1c300a..c813340 100644
--- a/lib/src/rendering/sliver_sticky_header.dart
+++ b/lib/src/rendering/sliver_sticky_header.dart
@@ -271,8 +271,8 @@ class RenderSliverStickyHeader extends RenderSliver with RenderSliverHelpers {
         if (_oldState != state) {
           _oldState = state;
           header!.layout(
-            BoxValueConstraints<SliverStickyHeaderState?>(
-              value: _oldState,
+            BoxValueConstraints<SliverStickyHeaderState>(
+              value: _oldState!,
               constraints: constraints.asBoxConstraints(),
             ),
             parentUsesSize: true,

From 3b532b5918053c8e62e03cd81a124aeece0d9bbc Mon Sep 17 00:00:00 2001
From: Amit Kotlovski <amitbk@gmail.com>
Date: Thu, 22 Apr 2021 11:15:19 +0300
Subject: [PATCH 2/2] Advancing version to 0.6.1

---
 CHANGELOG.md | 4 ++++
 pubspec.yaml | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b50159b..c63738e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.6.1
+### Fixed
+* Error due to null-safety migration.
+
 ## 0.6.0
 ### Changed
 * Migrated to sound null-safety.
diff --git a/pubspec.yaml b/pubspec.yaml
index 8443fb4..aa2c736 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: flutter_sticky_header
 description: Flutter implementation of sticky headers as a sliver. Use it in a CustomScrollView.
-version: 0.6.0
+version: 0.6.1
 homepage: https://github.com/letsar/flutter_sticky_header
 
 dependencies: