Create a flutter Color object and Compute hex color code for an arbitrary string flutter

Question

Most of the time, dynamic Colors in flutter will fetch from the server. But what if we need to generate a dynamic color just based on title or name? Is there any way to convert a simple string to a color on flutter? For example:

input:

String title = "Lord of the rings";

Output

Color color = getTitleColor(title);

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Does this answer your question? [How do I use hexadecimal color strings in Flutter?](https://stackoverflow.com/questions/50081213/how-do-i-use-hexadecimal-color-strings-in-flutter) — nvoigt, Apr 19 '23 at 11:17
@nvoigt no this is for titles and names such as "Lord of rings" or "Amirhassan Amirmahani" — hasanm08, Apr 19 '23 at 11:22

hasanm08 · Accepted Answer · 2023-04-19T11:20:06.550

1

Yes, the best way is to create a new extension on String model like this

extension StringColor on String {
  Color textToColor() {
    if(isEmpty){
      return Colors.black;
    }
    var hash = 0;
    for (var i = 0; i < length; i++) {
      hash = codeUnitAt(i) + ((hash << 5) - hash);
    }
    return Color(hash + 0xFF000000);
  }
}

edited Apr 19 '23 at 11:20

answered Apr 19 '23 at 11:12

hasanm08

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@nvoigt Just a logger and removed – hasanm08 Apr 19 '23 at 11:20

Create a flutter Color object and Compute hex color code for an arbitrary string flutter

1 Answers1