init

2025-06-30 16:24:20 +08:00
commit 68de5eb048
454 changed files with 56921 additions and 0 deletions
@@ -0,0 +1,36 @@
+import 'package:flutter/widgets.dart';
+
+class KeepAliveWrapper extends StatefulWidget {
+  const KeepAliveWrapper({
+    Key? key,
+    this.keepAlive = true,
+    required this.child,
+  }) : super(key: key);
+  final bool keepAlive;
+  final Widget child;
+
+  @override
+  _KeepAliveWrapperState createState() => _KeepAliveWrapperState();
+}
+
+class _KeepAliveWrapperState extends State<KeepAliveWrapper> with AutomaticKeepAliveClientMixin {
+  @override
+  Widget build(BuildContext context) {
+    super.build(context);
+    return RepaintBoundary(
+      child: widget.child,
+    );
+  }
+
+  @override
+  void didUpdateWidget(covariant KeepAliveWrapper oldWidget) {
+    if (oldWidget.keepAlive != widget.keepAlive) {
+      // keepAlive 状态需要更新，实现在 AutomaticKeepAliveClientMixin 中
+      updateKeepAlive();
+    }
+    super.didUpdateWidget(oldWidget);
+  }
+
+  @override
+  bool get wantKeepAlive => widget.keepAlive;
+}