Re: setState() don't refresh scaffold body ??

[Ian B]

I think you may need to include a bit more code, it's not obvious to me where/how mainscaffoldbody and selectedtab are used (maybe Stackoverflow is a slightly better medium for more code examples though). Also maybe add some debugging to _selectedTab & the setStates, see if it's being called exactly when you think it is.

On Thu, Dec 13, 2018 at 7:34 AM Julien P. <mach...@gmail.com> wrote:

Hi all,

here is a simple code :

class _MyHomePageState extends State<MyHomePage> with TickerProviderStateMixin {

  Widget mainScaffoldBody;

  void _selectedTab(int index) async {

    switch (index) {

      case 0 : // Accueil

        setState(() {

          mainScaffoldBody = null;

        });

        break;

      case 1 : // Recherche

        Article article = new Article(null);

        List<Article> articles = await article.getArticles('', '');

        setState(() {

          mainScaffoldBody = new AfficheArticles(articles);

        });

        break;

      case 2 : // Catégorie favorite 1

        Article article = new Article(null);

        List<Article> articles = await article.getArticles('categorie=4', 'note DESC, date DESC');

        setState(() {

          mainScaffoldBody = new AfficheArticles(articles);

        });

        break;

      case 3 : // Catégorie favorite 2

        Article article = new Article(null);

        List<Article> articles = await article.getArticles('categorie=3', 'note DESC, date DESC');

        setState(() {

          mainScaffoldBody = new AfficheArticles(articles);

        });

        break;

    }

  }


// etc...

}

The _selectedTab() method is called from a ontabSelected event from a bottomNavigationBar widget.

When I switch from index=0 to index=1 my mainScaffoldBody Widget i refreshed but when I switch from 1 to 2 or 1 to 3, etc... nothing is refreshed in the app !

I systematically need to switch to mainScaffoldBody=null to view the screen being refreshed. Neither nothing move when I want to change my scaffold body... :-(

Can U help me ?

Thx guys.

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