138 lines
3.7 KiB
Dart
138 lines
3.7 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:qr_flutter/qr_flutter.dart';
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class UpiScreen extends StatefulWidget {
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const UpiScreen({super.key});
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@override
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State<UpiScreen> createState() => _UpiScreenState();
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}
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class _UpiScreenState extends State<UpiScreen> {
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final TextEditingController accountCtrl = TextEditingController();
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final TextEditingController ifscCtrl = TextEditingController();
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final TextEditingController nameCtrl = TextEditingController();
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String? upiUri;
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/// Build UPI URI using Account Number + IFSC
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/// Follows NPCI UPI URI standards (upi://pay?pa=...&pn=...&cu=INR)
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/// Supported by UPI QR generators like Labnol which accept bank account + IFSC as payment address.
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String buildUpiUri({
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required String accountNumber,
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required String ifsc,
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required String name,
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}) {
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final upiAddress = "$accountNumber@apl";
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//const upiAddress = "asifarbaj-2@okaxis";
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final uri = Uri(
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scheme: "upi",
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host: "pay",
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queryParameters: {
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"pa": upiAddress,
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"pn": name,
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"cu": "INR",
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},
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);
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return uri.toString();
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}
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void generateQr() {
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final account = accountCtrl.text.trim();
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final ifsc = ifscCtrl.text.trim();
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final name = nameCtrl.text.trim();
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if (account.isEmpty || ifsc.isEmpty || name.isEmpty) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text("Please fill all fields")),
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);
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return;
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}
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setState(() {
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upiUri = buildUpiUri(
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accountNumber: account,
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ifsc: ifsc,
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name: name,
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);
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});
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text("Receive Money by UPI"),
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centerTitle: true,
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),
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body: Padding(
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padding: const EdgeInsets.all(20),
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child: SingleChildScrollView(
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child: Column(
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children: [
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TextField(
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controller: accountCtrl,
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decoration: const InputDecoration(
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labelText: "Account Number",
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border: OutlineInputBorder(),
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),
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keyboardType: TextInputType.number,
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),
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const SizedBox(height: 15),
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TextField(
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controller: ifscCtrl,
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decoration: const InputDecoration(
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labelText: "IFSC Code",
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border: OutlineInputBorder(),
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),
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),
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const SizedBox(height: 15),
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TextField(
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controller: nameCtrl,
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decoration: const InputDecoration(
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labelText: "Account Holder Name",
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border: OutlineInputBorder(),
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),
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),
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const SizedBox(height: 25),
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ElevatedButton(
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onPressed: generateQr,
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child: const Text("Generate QR"),
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),
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const SizedBox(height: 30),
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if (upiUri != null) ...[
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const Text(
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"Your UPI QR Code:",
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style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
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),
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const SizedBox(height: 15),
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QrImageView(
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data: upiUri!,
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version: QrVersions.auto,
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size: 260,
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backgroundColor: Colors.white,
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),
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const SizedBox(height: 10),
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SelectableText(
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upiUri!,
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textAlign: TextAlign.center,
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),
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],
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],
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),
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),
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),
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);
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}
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}
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