30 lines
635 B
Dart
30 lines
635 B
Dart
import 'package:flutter/material.dart';
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/// 保持widget 活跃
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/// 使用：KeepAliveWidget(widget);
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class KeepAliveWidget extends StatefulWidget {
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final Widget child;
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const KeepAliveWidget(this.child, {super.key});
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@override
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KeepAliveState createState() => KeepAliveState();
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}
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class KeepAliveState extends State<KeepAliveWidget> with AutomaticKeepAliveClientMixin {
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@override
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bool get wantKeepAlive => true;
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@override
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Widget build(BuildContext context) {
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super.build(context);
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return widget.child;
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}
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}
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extension KeepWrapper on Widget {
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Widget get keepAlive {
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return KeepAliveWidget(this);
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}
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}
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