Preserving state between tab view pages

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.

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

Long story short, use a PageStorageKey() for your ListView or one of it's ancestors, the Container widget in your case:

child: Container(
    key: PageStorageKey(page.country),
    child: Newsfeed(country: page.country),
),

See details here:

• https://api.flutter.dev/flutter/widgets/PageStorageKey-class.html

• https://api.flutter.dev/flutter/widgets/PageStorage-class.html

• https://api.flutter.dev/flutter/widgets/ScrollView/controller.html