how to save color in sharedpreferences

Question

i am trying to save Color in sharedpreference but it has only limited data type (String, int, double etc) i dont know

Future getColor() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    Color color = prefs.getString("color"); //error 
    return color;
  }

  Future setColor(Color themeColor) async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    await prefs.setString("color", (themeColor); //error
  }

}

Answer 1

I hope this code helps you. It can be written in a more beautiful way but I hope you get the idea.

//Convert the color to hex, Save it in preferences
var myColor = Colors.blue;
var hex = '#${myColor.value.toRadixString(16)}';
//save Hex value in sharedpreference.

//get the hex value from shared preferences and convert it into color.
Color yourColor= hexToColor(colorStringFromSharedPreference);

Color hexToColor(String code) {
  return Color(int.parse(code.substring(1, 7), radix: 16) + 0xFF000000);
}

Also as suggested in the comment, you can also store the int value of the color.

int myColorInteger = myColor.value
//store integer value in sharedpreference

and retrieving it and using Color's constructor

//retrieve intValue of color from sharedpreference and
Color myColor = Color(intValue)