flutter number format show 0 decimal places code example
Example: double 2 decimal places flutter
/// Define an extension:
extension Ex on double {
double toPrecision(int n) => double.parse(toStringAsFixed(n));
}
/// Usage:
void main() {
double d = 2.3456789;
double d1 = d.toPrecision(1); // 2.3
double d2 = d.toPrecision(2); // 2.35
double d3 = d.toPrecision(3); // 2.345
}