update

lib/widgets/pull_refresh_widget.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/material.dart';
+import 'package:pull_to_refresh/pull_to_refresh.dart';
+
+class PullRefreshWidget extends StatefulWidget {
+  final Widget child;
+  const PullRefreshWidget({super.key, required this.child});
+
+  @override
+  State<PullRefreshWidget> createState() => _PullRefreshWidgetState();
+}
+
+class _PullRefreshWidgetState extends State<PullRefreshWidget> {
+  final RefreshController refreshController = RefreshController(initialRefresh: false);
+
+  void onRefresh() async {
+    await Future.delayed(Duration(milliseconds: 1000));
+    refreshController.refreshCompleted();
+  }
+
+  void onLoading() async {
+    await Future.delayed(Duration(milliseconds: 1000));
+    if (mounted) setState(() {});
+    refreshController.loadComplete();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return SmartRefresher(
+        controller: refreshController,
+        enablePullDown: true,
+        onRefresh: onRefresh,
+        onLoading: onLoading,
+        child: widget.child);
+  }
+}