Flutter :How to print shared preferences all content

Question

I want to print all sharedpreferences content (key,value)
Keys and Values are given by the user

I've tried to put all Keys into a Set using getKeys() Method then loop the Set and retrieve my elements like this:

 _favoritePlaces() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    // prefKeys declared as  static Set<String>
    prefKeys=prefs.getKeys();
    if (prefKeys.isNotEmpty) {
      for (int i = 0; i < prefKeys.length; i++) {
       // this is another function expects to find key given as parameter
        _drawerItem(prefKeys.elementAt(i).toString());
      // expected output should come below
       
      }
    }
  }

Expected Output : Key0 => Value0

Answer 1

I'm worried there is no such API exposed (publicly) to get all prefs at once by the shared_preferences plugin.

You need to do that yourself. This worked for me:

class MainPage extends StatelessWidget {
  Future<List<Widget>> getAllPrefs() async {
    final SharedPreferences prefs = await PrefStore().prefs;
    return prefs
        .getKeys()
        .map<Widget>((key) => ListTile(
              title: Text(key),
              subtitle: Text(prefs.get(key).toString()),
            ))
        .toList(growable: false);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: FutureBuilder<List<Widget>>(
          future: getAllPrefs(),
          builder: (context, snapshot) {
            if (!snapshot.hasData) return Container();
            return ListView(
              children: snapshot.data,
            );
          }),
    );
  }
}