Магазин общих предпочтений.
prefs = await SharedPreferences.getInstance();
Map<String, dynamic> selectedTimes = {
"Pomodoro Setting": 15,
"Rest Time Setting": 5,
"Long Rest Time Setting": 15,
"Term of Resting Time Setting": 5
};
String encodedMap = json.encode(selectedTimes);
print(encodedMap);
prefs.setString('timeData', encodedMap);
Carlos García Moncada