如何在Flutter中维护TabBarView中页面的状态？

Question

我已经使用TabBarView作为BottomNavigationBar的页面保持器，而不是索引堆栈。但这确实会在每次更改选项卡时刷新页面。状态未维护。该怎么办？

Answer 1

使用AutomaticKeepAliveClientMixin flutter.dev

class _SampleScaffoldSate extends State<SampleScaffold> with AutomaticKeepAliveClientMixin {

  // ... other code

  @override
  bool get wantKeepAlive => true;

}