Preserving state between tab view pages

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In case you want to keep the state of your screen in your TabBarView, you can use the mixin class called AutomaticKeepAliveClientMixin in your State class.

After that you have to override the wantKeepAlive method and return true. It will looks like something that :

class _SearchScreenState extends State<SearchScreen> with AutomaticKeepAliveClientMixin<SearchScreen>{

...

  @override
  Widget build(BuildContext context) { 
    // call this method
    super.build(context); 

    /// your widget here
  }

  @override
  bool get wantKeepAlive => true;

}

I wrote a post about that here: https://medium.com/@diegoveloper/flutter-persistent-tab-bars-a26220d322bc

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