currency_kit_flutter 0.0.2

currency_kit_flutter: ^0.0.2 copied to clipboard

example/main.dart

import 'package:currency_kit_flutter/currency_kit_flutter.dart';
import 'package:flutter/material.dart';

void main() => runApp(const ExampleApp());

/// Shows a stored AED amount read through a chosen currency.
class ExampleApp extends StatefulWidget {
  /// Const constructor.
  const ExampleApp({super.key});

  @override
  State<ExampleApp> createState() => _ExampleAppState();
}

class _ExampleAppState extends State<ExampleApp> {
  /// The books are kept in AED. This value never changes below.
  static const _stored = Money(36.70, CurrencyCode.aed);

  static final _usdToAed = ExchangeRate(
    base: CurrencyCode.usd,
    quote: CurrencyCode.aed,
    rate: 3.67,
  );

  CurrencyCode _displayed = CurrencyCode.aed;

  ExchangeRate get _rate => _displayed == CurrencyCode.usd
      ? _usdToAed
      : const ExchangeRate.identity(CurrencyCode.aed);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              // AED 36.70, then USD 10.00 — the same stored amount.
              MoneyText(
                _stored,
                rate: _rate,
                style: Theme.of(context).textTheme.headlineMedium,
              ),
              const SizedBox(height: 16),
              CurrencySwitchButton(
                selected: _displayed,
                rate: _rate,
                options: [
                  const CurrencyOption(code: CurrencyCode.aed),
                  CurrencyOption(code: CurrencyCode.usd, rate: _usdToAed),
                ],
                onChanged: (option) => setState(() => _displayed = option.code),
              ),
              const SizedBox(height: 8),
              Text('stored: ${_stored.format()}'),
            ],
          ),
        ),
      ),
    );
  }
}