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Merge pull request semlette#14 from THUzxj/master
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Add writing NDEF records of multiple types to example app
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@Harry-Chen
Harry-Chen authored Sep 29, 2020
2 parents 3b97c5a + 0e76275 commit b5c2ff6
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Showing 7 changed files with 422 additions and 161 deletions.
1 change: 1 addition & 0 deletions example/android/settings_aar.gradle
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
include ':app'
235 changes: 78 additions & 157 deletions example/lib/main.dart
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Original file line number Diff line number Diff line change
@@ -1,5 +1,3 @@
import 'dart:convert';

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:io' show Platform, sleep;
Expand All @@ -8,6 +6,10 @@ import 'package:flutter/services.dart';
import 'package:flutter_nfc_kit/flutter_nfc_kit.dart';
import 'package:ndef/ndef.dart' as ndef;

import 'record-setting/raw_record_setting.dart';
import 'record-setting/text_record_setting.dart';
import 'record-setting/uri_record_setting.dart';

void main() => runApp(MaterialApp(home: MyApp()));

class MyApp extends StatefulWidget {
Expand All @@ -22,7 +24,7 @@ class _MyAppState extends State<MyApp> with SingleTickerProviderStateMixin {
NFCTag _tag;
String _result, _writeResult;
TabController _tabController;
List<NDEFRawRecord> _message;
List<ndef.NDEFRecord> _records;

@override
void dispose() {
Expand All @@ -35,7 +37,7 @@ class _MyAppState extends State<MyApp> with SingleTickerProviderStateMixin {
super.initState();
initPlatformState();
_tabController = new TabController(length: 2, vsync: this);
_message = new List<NDEFRawRecord>();
_records = new List<ndef.NDEFRecord>();
}

// Platform messages are asynchronous, so we initialize in an async method.
Expand Down Expand Up @@ -136,16 +138,15 @@ class _MyAppState extends State<MyApp> with SingleTickerProviderStateMixin {
children: <Widget>[
RaisedButton(
onPressed: () async {
if (_message.length != 0) {
if (_records.length != 0) {
try {
NFCTag tag = await FlutterNfcKit.poll();
setState(() {
_tag = tag;
});
if (tag.type == NFCTagType.mifare_ultralight ||
tag.type == NFCTagType.mifare_classic) {
await FlutterNfcKit.writeNDEFRawRecords(
_message);
await FlutterNfcKit.writeNDEFRecords(_records);
setState(() {
_writeResult = 'OK';
});
Expand All @@ -155,10 +156,11 @@ class _MyAppState extends State<MyApp> with SingleTickerProviderStateMixin {
'error: NDEF not supported: ${tag.type}';
});
}
} catch (e) {
} catch (e, stacktrace) {
setState(() {
_writeResult = 'error: $e';
});
print(stacktrace);
} finally {
await FlutterNfcKit.finish();
}
Expand All @@ -172,10 +174,68 @@ class _MyAppState extends State<MyApp> with SingleTickerProviderStateMixin {
),
RaisedButton(
onPressed: () {
setState(() {
_message.add(NDEFRawRecord(
"", "", "", ndef.TypeNameFormat.empty));
});
showDialog(
context: context,
builder: (BuildContext context) {
return SimpleDialog(
title: Text("Record Type"),
children: <Widget>[
SimpleDialogOption(
child: Text("Text Record"),
onPressed: () async {
Navigator.pop(context);
final result = await Navigator.push(
context, MaterialPageRoute(
builder: (context) {
return TextRecordSetting();
}));
if (result != null) {
if (result is ndef.TextRecord) {
setState(() {
_records.add(result);
});
}
}
},
),
SimpleDialogOption(
child: Text("Uri Record"),
onPressed: () async {
Navigator.pop(context);
final result = await Navigator.push(
context, MaterialPageRoute(
builder: (context) {
return UriRecordSetting();
}));
if (result != null) {
if (result is ndef.UriRecord) {
setState(() {
_records.add(result);
});
}
}
},
),
SimpleDialogOption(
child: Text("Raw Record"),
onPressed: () async {
Navigator.pop(context);
final result = await Navigator.push(
context, MaterialPageRoute(
builder: (context) {
return NDEFRecordSetting();
}));
if (result != null) {
if (result is ndef.NDEFRecord) {
setState(() {
_records.add(result);
});
}
}
},
),
]);
});
},
child: Text("Add record"),
)
Expand All @@ -187,24 +247,24 @@ class _MyAppState extends State<MyApp> with SingleTickerProviderStateMixin {
child: ListView(
shrinkWrap: true,
children: List<Widget>.generate(
_message.length,
_records.length,
(index) => GestureDetector(
child: Text(
'id:${_message[index].identifier}\ntnf:${_message[index].typeNameFormat}\ntype:${_message[index].type}\npayload:${_message[index].payload}\n'),
'id:${_records[index].id.toHexString()}\ntnf:${_records[index].tnf}\ntype:${_records[index].type.toHexString()}\npayload:${_records[index].payload.toHexString()}\n'),
onTap: () async {
final result = await Navigator.push(context,
MaterialPageRoute(builder: (context) {
return NDEFRecordSetting(
record: _message[index]);
record: _records[index]);
}));
if (result != null) {
if (result is NDEFRawRecord) {
if (result is ndef.NDEFRecord) {
setState(() {
_message[index] = result;
_records[index] = result;
});
} else if (result is String &&
result == "Delete") {
_message.removeAt(index);
_records.removeAt(index);
}
}
},
Expand All @@ -217,142 +277,3 @@ class _MyAppState extends State<MyApp> with SingleTickerProviderStateMixin {
);
}
}

class NDEFRecordSetting extends StatefulWidget {
NDEFRawRecord record;
NDEFRecordSetting({Key key, this.record}) : super(key: key);
@override
_NDEFRecordSetting createState() => _NDEFRecordSetting();
}

class _NDEFRecordSetting extends State<NDEFRecordSetting> {
GlobalKey _formKey = new GlobalKey<FormState>();
TextEditingController _identifierController;
TextEditingController _payloadController;
TextEditingController _typeController;
ndef.TypeNameFormat _tnf = ndef.TypeNameFormat.empty;
int _dropButtonValue;

@override
initState() {
_identifierController = new TextEditingController.fromValue(
TextEditingValue(text: widget.record.identifier));
_payloadController = new TextEditingController.fromValue(
TextEditingValue(text: widget.record.payload));
_typeController = new TextEditingController.fromValue(
TextEditingValue(text: widget.record.type));
_tnf = widget.record.typeNameFormat;
_dropButtonValue = ndef.TypeNameFormat.values.indexOf(_tnf);
}

@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text('Set Record'),
),
body: Center(
child: Form(
key: _formKey,
autovalidate: true,
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
DropdownButton(
value: _dropButtonValue,
items: [
DropdownMenuItem(
child: Text('empty'),
value: 0,
),
DropdownMenuItem(
child: Text('nfcWellKnown'),
value: 1,
),
DropdownMenuItem(
child: Text('media'),
value: 2,
),
DropdownMenuItem(
child: Text('absoluteURI'),
value: 3,
),
DropdownMenuItem(
child: Text('nfcExternal'), value: 4),
DropdownMenuItem(
child: Text('unchanged'), value: 5),
DropdownMenuItem(
child: Text('unknown'),
value: 6,
),
],
onChanged: (value) {
setState(() {
_tnf = ndef.TypeNameFormat.values[value];
_dropButtonValue =
ndef.TypeNameFormat.values.indexOf(_tnf);
});
},
),
TextFormField(
decoration: InputDecoration(labelText: 'identifier'),
validator: (v) {
return v.trim().length % 2 == 0
? null
: 'length must be even';
},
controller: _identifierController,
),
TextFormField(
decoration: InputDecoration(labelText: 'type'),
validator: (v) {
return v.trim().length % 2 == 0
? null
: 'length must be even';
},
controller: _typeController,
),
TextFormField(
decoration: InputDecoration(labelText: 'payload'),
validator: (v) {
return v.trim().length % 2 == 0
? null
: 'length must be even';
},
controller: _payloadController,
),
RaisedButton(
child: Text('OK'),
onPressed: () {
if ((_formKey.currentState as FormState)
.validate()) {
Navigator.pop(
context,
NDEFRawRecord(
(_identifierController.text == null
? ""
: _identifierController.text),
(_payloadController.text == null
? ""
: _payloadController.text),
(_typeController.text == null
? ""
: _typeController.text),
_tnf));
}
},
),
RaisedButton(
child: Text('Delete'),
onPressed: () {
if ((_formKey.currentState as FormState)
.validate()) {
Navigator.pop(context, 'Delete');
}
},
),
],
)))));
}
}
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