Passing data to a deep ancestor widget in flutter-CodePudding

I have eight screens. The first 7 screen has data to be sent to the last screen how do I go arouund this??

I tried passinng it through from one parent to another but that is too much work

CodePudding user response：

why don't you use a state management like provider??? if you don't use a state management it'll be hard to use datas from one screen to another step by step. you can create a class like this:

class ExpampleClass extends ChangeNotifier {

String? _yourData;

void setYourData(String? newData){
_yourData = newData;
 notifyListeners();
}

String? get yourData => _yourData;

}

as you see when _yourData is changed, it tells you and you can use this data where ever you want by providing ExpampleClass,even you can set a data in your first screen and use that data in the last screen without passing data step page by step.

Provider.of<ExpampleClass>(context, listen: false).yourData;

and even you can use that data in your widgets like this by using Consumer everywhere you want:

Consumer<ExpampleClass>(
        builder: (context, exampleClassProvider ,snapshot) {
          return Text(exampleClassProvider!.yourData);
        }
      )

***be careful to use MultiProvider in your first root class of your project to define your providers.

here is provider package document. read it carefully.

CodePudding user response：

you need an global state solution, like provider, riverpod, getx etc … there’s good book on this in amazon "Managing State in Flutter Pragmatically”