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import 'dart:async';
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import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:nfc_manager/nfc_manager.dart';
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import 'package:nfc_manager/nfc_manager_android.dart' show NfcAAndroid, NfcBAndroid;
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import 'package:nfc_manager/nfc_manager_ios.dart' show MiFareIos, Iso15693Ios;
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import 'package:test_sa/dashboard_latest/dashboard_view.dart';
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import 'package:test_sa/extensions/context_extension.dart';
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import 'package:test_sa/new_views/app_style/app_color.dart';
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import 'package:test_sa/views/app_style/sizing.dart';
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void showNfcReader(BuildContext context, {Function(String?)? onNcfScan}) {
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showModalBottomSheet(
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context: context,
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enableDrag: false,
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isDismissible: false,
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shape: const RoundedRectangleBorder(
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borderRadius: BorderRadius.only(topLeft: Radius.circular(12), topRight: Radius.circular(12)),
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),
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backgroundColor: Colors.white,
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builder: (context) {
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return NfcLayout(
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onNcfScan: onNcfScan,
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);
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},
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);
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}
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class NfcLayout extends StatefulWidget {
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final Function(String? nfcId)? onNcfScan;
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const NfcLayout({super.key, required this.onNcfScan});
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@override
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_NfcLayoutState createState() => _NfcLayoutState();
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}
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class _NfcLayoutState extends State<NfcLayout> {
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bool _reading = false;
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Widget? mainWidget;
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String? nfcId;
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@override
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void initState() {
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super.initState();
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_startNfcSession();
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}
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@override
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void dispose() {
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// Ensure session is stopped when widget is disposed
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NfcManager.instance.stopSession().catchError((e) {
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print('Error stopping NFC session in dispose: $e');
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});
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super.dispose();
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}
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void _startNfcSession() async {
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// Stop any existing session before starting a new one
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try {
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await NfcManager.instance.stopSession();
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} catch (e) {
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print('No active session to stop: $e');
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}
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NfcManager.instance.startSession(
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onDiscovered: (NfcTag tag) async {
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String? identifier;
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try {
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if (Platform.isAndroid) {
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// Try NfcA first (most common)
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final nfcA = NfcAAndroid.from(tag);
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if (nfcA != null) {
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identifier = nfcA.tag.id.map((e) => e.toRadixString(16).padLeft(2, '0')).join('');
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} else {
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// Fallback to NfcB
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final nfcB = NfcBAndroid.from(tag);
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if (nfcB != null) {
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identifier = nfcB.tag.id.map((e) => e.toRadixString(16).padLeft(2, '0')).join('');
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}
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}
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} else {
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// For iOS, try MiFare first
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final mifare = MiFareIos.from(tag);
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if (mifare != null) {
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identifier = mifare.identifier.map((e) => e.toRadixString(16).padLeft(2, '0')).join('');
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} else {
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// Fallback to Iso15693 for iOS
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final iso15693 = Iso15693Ios.from(tag);
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if (iso15693 != null) {
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identifier = iso15693.identifier.map((e) => e.toRadixString(16).padLeft(2, '0')).join('');
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}
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}
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}
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} catch (e) {
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print('Error reading NFC tag: $e');
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}
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nfcId = identifier;
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if (!mounted) return;
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setState(() {
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_reading = true;
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mainWidget = doneNfc();
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});
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Future.delayed(const Duration(seconds: 1), () async {
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try {
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await NfcManager.instance.stopSession();
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} catch (e) {
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print('Error stopping session: $e');
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}
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if (mounted) {
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Navigator.pop(context);
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widget.onNcfScan!(nfcId!);
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}
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});
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},
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pollingOptions: {NfcPollingOption.iso14443},
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).catchError((err) {
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print('NFC session error: $err');
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// Stop session on error
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NfcManager.instance.stopSession().catchError((e) {
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print('Error stopping session after error: $e');
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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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(mainWidget == null && !_reading) ? mainWidget = scanNfc() : mainWidget = doneNfc();
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return AnimatedSwitcher(duration: Duration(milliseconds: 500), child: mainWidget);
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}
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Widget scanNfc() {
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return Container(
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color: AppColor.background(context),
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key: ValueKey(1),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: <Widget>[
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SizedBox(
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height: 30,
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),
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Text(
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"Ready To Scan",
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style: TextStyle(
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fontWeight: FontWeight.bold,
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fontSize: 24,
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color:AppColor.headingTextColor(context)
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),
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),
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SizedBox(
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height: 30,
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),
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Image.asset(
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"assets/images/ic_nfc.png",
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height: MediaQuery.of(context).size.width / 3,
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color: AppColor.iconColor(context),
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width: double.infinity,
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),
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const SizedBox(
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height: 30,
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),
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const Text(
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"Approach an NFC Tag",
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style: TextStyle(
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fontSize: 18,
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),
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),
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const SizedBox(
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height: 30,
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),
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ButtonTheme(
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minWidth: MediaQuery.of(context).size.width / 1.2,
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height: 45.0,
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buttonColor: Colors.grey[300],
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(6),
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),
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child: TextButton(
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onPressed: () async {
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try {
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await NfcManager.instance.stopSession();
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} catch (e) {
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print('Error stopping NFC session: $e');
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}
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if (mounted) {
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Navigator.pop(context);
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}
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},
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// elevation: 0,
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child: const Text("CANCEL"),
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),
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),
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SizedBox(
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height: 30,
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),
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],
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),
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);
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}
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Widget doneNfc() {
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return Container(
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color: AppColor.background(context),
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key: ValueKey(2),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: <Widget>[
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SizedBox(
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height: 30,
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),
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Text(
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"Successfully Scanned",
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style: TextStyle(
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fontWeight: FontWeight.bold,
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fontSize: 24,
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color:AppColor.headingTextColor(context)
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),
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),
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SizedBox(
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height: 30,
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),
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Image.asset(
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// "assets/icons/nfc/ic_done.png",
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"assets/images/ic_done.png",
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height: MediaQuery.of(context).size.width / 3,
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width: double.infinity,
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color: AppColor.iconColor(context),
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),
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SizedBox(
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height: 30,
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),
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Text(
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"Approach an NFC Tag",
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style: TextStyle(
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fontSize: 18,
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),
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),
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SizedBox(
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height: 30,
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),
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ButtonTheme(
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minWidth: MediaQuery.of(context).size.width / 1.2,
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height: 45.0,
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buttonColor: Colors.grey[300],
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(6),
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),
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child: TextButton(
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// onPressed: () {
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// _stream?.cancel();
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// widget.onNcfScan(nfcId);
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// Navigator.pop(context);
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// },
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onPressed: null,
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// elevation: 0,
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child: Text("DONE",style: TextStyle(color: context.isDark?AppColor.primary10:null),),
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),
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),
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SizedBox(
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height: 30,
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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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