first commit

lib/flutterlib/keep_alive_wrapper.dart

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+import 'package:flutter/material.dart';
+
+class KeepAliveWidgetWrapper extends StatefulWidget {
+  const KeepAliveWidgetWrapper({
+    Key? key,
+    required this.builder,
+  }) : super(key: key);
+
+  final WidgetBuilder builder;
+
+  @override
+  State<KeepAliveWidgetWrapper> createState() => _KeepAliveWidgetWrapperState();
+}
+
+class _KeepAliveWidgetWrapperState extends State<KeepAliveWidgetWrapper>
+    with AutomaticKeepAliveClientMixin {
+  @override
+  bool get wantKeepAlive => true;
+
+  @override
+  Widget build(BuildContext context) {
+    super.build(context);
+    return widget.builder(context);
+  }
+}