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200 lines
5.1 KiB
Dart
200 lines
5.1 KiB
Dart
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/platform_tags.dart';
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void showNfcReader(BuildContext context, {required Function(String? nfcId) 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: 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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Function(String? nfcId) onNcfScan;
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NfcLayout({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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NfcManager.instance.startSession(onDiscovered: (NfcTag tag) async {
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var f;
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if (Platform.isAndroid) {
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f = MifareUltralight(tag: tag, identifier: tag.data["nfca"]["identifier"], type: 2, maxTransceiveLength: 252, timeout: 22);
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} else {
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f = MifareUltralight(tag: tag, identifier: tag.data["mifare"]["identifier"], type: 2, maxTransceiveLength: 252, timeout: 22);
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}
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String identifier = f.identifier.map((e) => e.toRadixString(16).padLeft(2, '0')).join('');
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nfcId = identifier;
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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), () {
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NfcManager.instance.stopSession();
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Navigator.pop(context);
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// if (Platform.isAndroid) {
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// Navigator.pop(context);
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// } else {
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// Navigator.pop(context);
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// Navigator.pop(context);
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// }
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widget.onNcfScan(nfcId);
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});
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}).catchError((err) {
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print(err);
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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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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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),
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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_nfc.png",
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height: MediaQuery.of(context).size.width / 3,
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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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NfcManager.instance.stopSession();
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Navigator.pop(context);
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},
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// elevation: 0,
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child: 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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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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),
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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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height: MediaQuery.of(context).size.width / 3,
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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"),
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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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