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PatientApp-KKUMC/lib/widgets/nfc/nfc_reader_sheet.dart

184 lines
4.6 KiB
Dart

import 'package:flutter/material.dart';
import 'package:flutter_nfc_kit/flutter_nfc_kit.dart';
void showNfcReader(BuildContext context, {Function onNcfScan, VoidCallback onCancel}) {
showModalBottomSheet(
context: context,
enableDrag: false,
isDismissible: false,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.only(topLeft: Radius.circular(12), topRight: Radius.circular(12)),
),
backgroundColor: Colors.white,
builder: (context) {
return NfcLayout(
onNcfScan: onNcfScan,
onCancel: onCancel,
);
});
}
class NfcLayout extends StatefulWidget {
Function onNcfScan;
VoidCallback onCancel;
NfcLayout({this.onNcfScan, this.onCancel});
@override
_NfcLayoutState createState() => _NfcLayoutState();
}
class _NfcLayoutState extends State<NfcLayout> {
bool _reading = false;
Widget mainWidget;
String nfcId;
@override
void initState() {
super.initState();
readNFC();
}
void readNFC() async {
FlutterNfcKit.poll(timeout: Duration(seconds: 10), androidPlatformSound: false, iosMultipleTagMessage: "Multiple tags found!").then((value) async {
setState(() {
_reading = true;
mainWidget = doneNfc();
});
Future.delayed(const Duration(milliseconds: 500), () async {
await FlutterNfcKit.finish();
widget.onNcfScan(nfcId);
Navigator.pop(context);
});
nfcId = value.id;
});
}
@override
Widget build(BuildContext context) {
(mainWidget == null && !_reading) ? mainWidget = scanNfc() : mainWidget = doneNfc();
return AnimatedSwitcher(duration: Duration(milliseconds: 500), child: mainWidget);
}
Widget scanNfc() {
return Container(
key: ValueKey(1),
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
SizedBox(
height: 30,
),
Text(
"Ready To Scan",
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 24,
),
),
SizedBox(
height: 30,
),
Image.asset(
"assets/images/nfc/ic_nfc.png",
height: MediaQuery.of(context).size.width / 3,
),
SizedBox(
height: 30,
),
Text(
"Approach an NFC Tag",
style: TextStyle(
fontSize: 18,
),
),
SizedBox(
height: 30,
),
ButtonTheme(
minWidth: MediaQuery.of(context).size.width / 1.2,
height: 45.0,
buttonColor: Colors.grey[300],
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(6),
),
child: RaisedButton(
onPressed: () {
// _stream?.cancel();
widget.onCancel();
Navigator.pop(context);
},
elevation: 0,
child: Text("CANCEL"),
),
),
SizedBox(
height: 30,
),
],
),
);
}
Widget doneNfc() {
return Container(
key: ValueKey(2),
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
SizedBox(
height: 30,
),
Text(
"Successfully Scanned",
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 24,
),
),
SizedBox(
height: 30,
),
Image.asset(
"assets/images/nfc/ic_done.png",
height: MediaQuery.of(context).size.width / 3,
),
SizedBox(
height: 30,
),
Text(
"Approach an NFC Tag",
style: TextStyle(
fontSize: 18,
),
),
SizedBox(
height: 30,
),
ButtonTheme(
minWidth: MediaQuery.of(context).size.width / 1.2,
height: 45.0,
buttonColor: Colors.grey[300],
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(6),
),
child: RaisedButton(
// onPressed: () {
// _stream?.cancel();
// widget.onNcfScan(nfcId);
// Navigator.pop(context);
// },
onPressed: null,
elevation: 0,
child: Text("DONE"),
),
),
SizedBox(
height: 30,
),
],
),
);
}
}