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lib/widgets/sliver_tab_body.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+
+class SliverTabBody extends StatelessWidget {
+  final Widget child;
+
+  const SliverTabBody({Key? key, required this.child}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return SafeArea(
+      top: false,
+      child: Builder(
+        builder: (BuildContext context) => CustomScrollView(
+          slivers: [
+            SliverOverlapInjector(
+              handle: NestedScrollView.sliverOverlapAbsorberHandleFor(context),
+            ),
+            child,
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class SliverTabBodyRefresh extends StatelessWidget {
+  final Widget child;
+  final Future<void> Function() onRefresh;
+
+  const SliverTabBodyRefresh({
+    Key? key,
+    required this.child,
+    required this.onRefresh,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return SafeArea(
+      top: false,
+      child: Builder(
+        builder: (BuildContext context) => RefreshIndicator(
+          displacement: 120,
+          onRefresh: onRefresh,
+          child: CustomScrollView(
+            slivers: [
+              SliverOverlapInjector(
+                handle: NestedScrollView.sliverOverlapAbsorberHandleFor(context),
+              ),
+              child,
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}