firewallet-mobile/lib/receive.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:http/http.dart' as http;
import 'dart:convert';
import 'package:qr_flutter/qr_flutter.dart';

class ReceivePage extends StatefulWidget {
  ReceivePage({Key? key, required this.uuid, required this.wallet})
      : super(key: key);

  final String uuid;
  String wallet;

  @override
  _ReceivePageState createState() => _ReceivePageState();
}

class _ReceivePageState extends State<ReceivePage> {
  @override
  void initState() {
    super.initState();
    fetchReceive();
  }

  String address = '';

  Future<void> fetchReceive() async {
    // Fetch domains from api
    final response = await http.get(Uri.parse(
        'https://api.firewallet.au/wallet/address?uuid=${widget.uuid}&name=${widget.wallet}'));
    if (response.statusCode == 200) {
      final data = jsonDecode(response.body);
      if (data is Map && data.containsKey('error')) {
        print('Error: ${data['error']}');
        return;
      }
      // Return if empty
      if (data.isEmpty) {
        setState(() {
          address = 'No address found';
        });

        return;
      }
      final addressData = data as Map;
      setState(() {
        address = addressData['address'];
      });
    } else {
      // Handle error
      print('Failed to load wallet names');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('${widget.wallet} - Receive HNS or Domains'),
      ),
      // Get wallet list from api and display here
      body: Center(
        child: LayoutBuilder(
          builder: (BuildContext context, BoxConstraints constraints) {
            return ListView(
              children: <Widget>[
                Center(child: Text(address, style: TextStyle(fontSize: 18.0))),
                // QR Code
                Center(
                  child: QrImageView(
                    data: address,
                    version: QrVersions.auto,
                    // Width = 90% of the screen width
                    size: constraints.maxWidth * 0.9,
                    eyeStyle: QrEyeStyle(
                      eyeShape: QrEyeShape.square,
                      color: Theme.of(context).brightness == Brightness.light
                          ? Colors.black
                          : Colors.white,
                    ),
                    dataModuleStyle: QrDataModuleStyle(
                      dataModuleShape: QrDataModuleShape.square,
                      color: Theme.of(context).brightness == Brightness.light
                          ? Colors.black
                          : Colors.white,
                    ),
                  ),
                ),

                TextButton(onPressed: copyAddress, child: Text('Copy Address')),
                TextButton(onPressed: fetchReceive, child: Text('Refresh')),
              ],
            );
          },
        ),
      ),
    );
  }

  Future<void> copyAddress() async {
    // Copy the address to the clipboard
    await Clipboard.setData(ClipboardData(text: address));
  }
}