flutter_nfc_reader 0.0.1

A nfc reader plugin for iOS and Android.

example/lib/main.dart

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

import 'package:flutter/services.dart';
import 'package:flutter_nfc_reader/flutter_nfc_reader.dart';

void main() => runApp(new MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  String _nfcData = '';
  bool _nfcActive = false;

  @override
  void initState() {
    super.initState();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;

    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      platformVersion = await FlutterNfcReader.platformVersion;
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  Future<Null> startNFC() async {
    String response;
    try {
      final String result = await FlutterNfcReader.startNFC;
      if (result != null) {
        response = '';
      } else {
        response = result;
      }
    } on PlatformException {
      response = '';
    }
    setState(() {
      _nfcActive = true;
      _nfcData = response;
    });
  }

  Future<Null> stopNFC() async {
    bool response;
    try {
      final bool result = await FlutterNfcReader.stopNFC;
      response = result;
    } on PlatformException {
      response = false;
    }
    setState(() {
      _nfcActive = response;
    });
  }

  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
        home: new Scaffold(
      appBar: new AppBar(
        title: const Text('Plugin example app'),
      ),
      body: new Center(
        child: Column(
          children: <Widget>[
            new Text('Running on: $_platformVersion\n'),
            new Text('NFC Status: $_nfcActive\n'),
            new Text('NFC Data: $_nfcData\n'),
            new FlatButton(
              child: Text('Start NFC'),
              onPressed: () {
                startNFC();
              },
            ),
            new FlatButton(
              child: Text('Stop NFC'),
              onPressed: () {
                stopNFC();
              },
            ),
          ],
        ),
      ),
    ));
  }
}