How to pass values globally in flutter-CodePudding

I have some values that are stored in shared prefrences and in my case when I need to use these values in different screens, I am calling them in each one of them in a method like this:


Future <String> getUserInfo() async{
    SharedPreferences preferences = await SharedPreferences.getInstance();
    String username = preferences.getString('$userID,name')?? "No name found";
    String weight = preferences.getString('$userID,weight') ?? "no wight found";
    String height = preferences.getString('$userID,height') ?? "no Height found";
    String gendertype = preferences.getString('$userID,genderType') ?? "no gender Type found";
    String birthdate = preferences.getString('$userID,dateOfBirth') ?? "no date  found";
    

    userName = username;
    userWeight = weight;
    userHeight = height;
    userGender = gendertype;
    birthDateInString = birthdate;


    return username;
  }

That is working fina and all and I am getting the values everytime but then this doesnt feels right. I think I should only call them once and then pass them globally between screens or somehow keep them always stored for later use.

How can I achieve that?

CodePudding user response：

using provider packages https://pub.dev/packages/provider

You can store the value and call it when you need it.

class UserInfo extends ChangeNotifier{
  ///Implement your Data Model And Method
}

call

//If you need to update the UI  
context.watch<UserInfo>().yourValueName or Method

//If you need to not update the UI  
context.read<UserInfo>().yourValueName or Method