how to send Flutter Color as json || convert String to Color Flutter
To send a Flutter Color
object as JSON, you can convert it to a hexadecimal string representation and then include it in the JSON payload. Here's an example of how you can achieve this:
import 'dart:convert';
import 'package:flutter/material.dart';
void main() {
final color = Colors.blue;
// Convert Color to hexadecimal string
final colorHex = '#${color.value.toRadixString(16).padLeft(8, '0')}';
// Create a JSON object
final json = {'color': colorHex};
// Convert JSON object to string
final jsonString = jsonEncode(json);
print(jsonString);
}
In this example, we import the dart:convert
library to use the jsonEncode
function. We create a Color
object (Colors.blue
in this case) and convert it to a hexadecimal string using the value
property. We then create a JSON object with the color hexadecimal string as a value. Finally, we encode the JSON object to a string using jsonEncode
and print the result.
To convert a string representing a color back to a Color
object in Flutter, you can use the Color
constructor and pass the hexadecimal string as an argument. Here's an example:
import 'package:flutter/material.dart';
void main() {
final colorHex = '#FF0000'; // Example color hexadecimal string
// Convert hexadecimal string to Color
final color = Color(int.parse(colorHex.replaceAll('#', '0x')));
print(color);
}
In this example, we create a colorHex
string representing a color in hexadecimal format. We remove the '#' character from the string and parse it as an integer using int.parse
. Then, we pass the parsed value to the Color
constructor to obtain a Color
object. Finally, we print the resulting Color
object.
These examples demonstrate how to send a Color
object as JSON by converting it to a hexadecimal string representation, as well as how to convert a string back to a Color
object in Flutter.