serial_communication 0.0.2 
serial_communication: ^0.0.2 copied to clipboard
bjssoftsolutions.comAn Android Plugin for Serial Communication which allows you to read and write the data through the available ports
import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:serial_communication/serial_communication.dart';
void main() {
DartPluginRegistrant.ensureInitialized();
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return const MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Serial Communication',
home: HomePage(),
);
}
}
class HomePage extends StatefulWidget {
const HomePage({Key? key}) : super(key: key);
@override
State<HomePage> createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
String logData = "";
String receivedData = "";
String selectedPort = "Select Port";
int selectedBaudRate = SerialCommunication().baudRateList.first;
List<String>? serialList = [];
DataFormat format = DataFormat.ASCII;
SerialCommunication serialCommunication = SerialCommunication();
@override
void initState() {
super.initState();
serialCommunication.startSerial().listen(_updateConnectionStatus);
getSerialList();
}
getSerialList() async {
serialList = await serialCommunication.getAvailablePorts();
}
@override
void dispose() {
serialCommunication.destroy();
super.dispose();
}
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
home: Scaffold(
resizeToAvoidBottomInset: false,
appBar: AppBar(
title: const Text('Serial Communication Example'),
),
body: SingleChildScrollView(
physics: const NeverScrollableScrollPhysics(),
child: Padding(
padding: const EdgeInsets.all(10.0),
child: Column(
children: [
setupButton(context),
const Divider(),
operations(),
const Divider(),
sendCommand(),
const Divider(),
response()
],
),
),
),
),
);
}
InkWell setupButton(BuildContext context) {
return InkWell(
onTap: () {
settingModalBottomSheet(context: context, list: serialList);
},
child: Material(
elevation: 4,
borderRadius: BorderRadius.circular(15),
color: const Color(0xFFF2F2F7),
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
Text(
"Tap to setup",
style: mediumStyle.apply(fontSizeFactor: 1),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
RichText(
text: TextSpan(
text: 'Device: \n',
style: mediumStyle.apply(color: Colors.blue),
children: <TextSpan>[
TextSpan(
text: selectedPort,
style: mediumStyle.apply(color: Colors.black54),
)
],
),
),
RichText(
text: TextSpan(
text: 'Baud Rate: \n',
style: mediumStyle.apply(color: Colors.blue),
children: <TextSpan>[
TextSpan(
text: "$selectedBaudRate",
style: mediumStyle.apply(color: Colors.black54),
)
],
),
),
],
),
),
RichText(
text: TextSpan(
text: 'Data Format: ',
style: mediumStyle.apply(color: Colors.blue),
children: <TextSpan>[
TextSpan(
text: format.name,
style: mediumStyle.apply(
color: Colors.black54,
),
)
],
),
),
],
),
),
),
);
}
Widget response() {
return Column(
children: [
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
Column(
children: [
const Text(
"Received Data",
style: mediumStyle,
),
const SizedBox(
height: 10,
),
button(
name: "Empty",
onPress: () {
serialCommunication.clearRead();
}),
],
),
Column(
children: [
const Text(
"Operation Log",
style: mediumStyle,
),
const SizedBox(
height: 10,
),
button(
name: "Empty",
onPress: () {
serialCommunication.clearLog();
}),
],
),
],
),
const SizedBox(
height: 10,
),
SizedBox(
height: MediaQuery.of(context).size.height * .4,
child: Row(
children: [
log(data: receivedData),
const VerticalDivider(
thickness: 2,
),
log(data: logData)
],
),
),
],
);
}
Widget log({required String data}) {
return Expanded(
child: Scrollbar(
child: SingleChildScrollView(
physics: const AlwaysScrollableScrollPhysics(),
scrollDirection: Axis.vertical, //.horizontal
child: Text(
data,
style: const TextStyle(
fontSize: 16.0,
color: Colors.black,
),
),
),
),
);
}
Widget sendCommand() {
return Material(
elevation: 4,
color: const Color(0xFFF2F2F7),
borderRadius: BorderRadius.circular(12),
child: Padding(
padding: const EdgeInsets.symmetric(vertical: 20.0, horizontal: 10),
child: Row(
children: [
const Expanded(
child: TextField(
decoration: InputDecoration(hintText: "Write send Command"),
),
),
button(
name: "Send",
onPress: () {
serialCommunication.sendCommand(message: "message");
})
],
),
),
);
}
Widget operations() {
return Material(
elevation: 4,
color: const Color(0xFFF2F2F7),
borderRadius: BorderRadius.circular(12),
child: Padding(
padding: const EdgeInsets.all(9.0),
child: Column(
children: [
const SizedBox(
height: 10,
),
Text("OPERATION", style: mediumStyle.apply(color: Colors.black54)),
const SizedBox(
height: 10,
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
button(
name: "Open",
onPress: () {
serialCommunication.openPort(
dataFormat: format,
serialPort: selectedPort,
baudRate: selectedBaudRate);
}),
button(
name: "Close",
onPress: () {
serialCommunication.closePort();
})
],
),
],
),
),
);
}
void _updateConnectionStatus(SerialResponse? result) async {
setState(() {
logData = result!.logChannel ?? "";
receivedData = result.readChannel ?? "";
});
}
Widget button({required String name, required Function() onPress}) {
return SizedBox(
height: 40,
width: 130,
child: ElevatedButton(
onPressed: onPress,
child: Text(
name,
style: mediumStyle,
)),
);
}
settingModalBottomSheet({context, List<String>? list}) {
showModalBottomSheet(
isScrollControlled: true,
enableDrag: true,
backgroundColor: Colors.transparent,
context: context,
builder: (BuildContext bc) {
return StatefulBuilder(
builder: (context, state) {
return Container(
height: 400,
padding: const EdgeInsets.only(left: 20, right: 20),
decoration: const BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.only(
topLeft: Radius.circular(26),
topRight: Radius.circular(26),
),
),
child: ListView(
physics: const ScrollPhysics(),
shrinkWrap: true,
children: [
Column(
crossAxisAlignment: CrossAxisAlignment.start,
verticalDirection: VerticalDirection.down,
children: <Widget>[
Padding(
padding: const EdgeInsets.all(12.0),
child: Center(
child: Container(
height: 5,
width: 100,
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(90),
),
)),
),
const Divider(),
listTile(
widget: DropdownButtonHideUnderline(
child: DropdownButton<String>(
isExpanded: true,
borderRadius: BorderRadius.circular(10),
hint: Text(
selectedPort,
style: mediumStyle.apply(
fontSizeFactor: 0.9),
),
items: serialList!.map((String? value) {
return DropdownMenuItem<String>(
value: value,
child:
Text(value!, style: mediumStyle),
);
}).toList(),
onChanged: (p0) {
updateSelectPort(state, p0!);
},
),
),
title: "Serial Port:"),
listTile(
widget: DropdownButtonHideUnderline(
child: DropdownButton<int>(
isExpanded: true,
borderRadius: BorderRadius.circular(10),
hint: Text(
selectedBaudRate.toString(),
style: mediumStyle.apply(
fontSizeFactor: 0.9),
),
menuMaxHeight: 400.0,
items: serialCommunication.baudRateList
.map((int? value) {
return DropdownMenuItem<int>(
value: value,
child: Text(value.toString(),
style: mediumStyle),
);
}).toList(),
onChanged: (p0) {
updateSelectBaudRate(state, p0!);
},
),
),
title: 'Select the BaudRate:'),
listTile(
widget: Row(
children: [
Expanded(
child: CheckboxListTile(
title: const Text(
"ASCII",
),
value: format == DataFormat.ASCII
? true
: false,
onChanged: (newValue) {
updateDataFormat(
state, DataFormat.ASCII);
},
controlAffinity:
ListTileControlAffinity.leading,
),
),
Expanded(
child: CheckboxListTile(
title: const Text(
"HEX String",
),
value: format == DataFormat.HEX_STRING
? true
: false,
onChanged: (newValue) {
updateDataFormat(
state, DataFormat.HEX_STRING);
},
controlAffinity:
ListTileControlAffinity.leading,
),
),
],
),
title: "Data Format",
),
])
]));
},
);
});
}
Future<void> updateSelectPort(StateSetter updateState, String value) async {
updateState(() {
setState(() {
selectedPort = value;
});
});
}
Future<void> updateDataFormat(
StateSetter updateState, DataFormat value) async {
updateState(() {
setState(() {
format = value;
});
});
}
Future<void> updateSelectBaudRate(StateSetter updateState, int value) async {
updateState(() {
setState(() {
selectedBaudRate = value;
});
});
}
Widget listTile({required Widget widget, required String title}) {
return Padding(
padding: const EdgeInsets.all(12.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
title,
textAlign: TextAlign.left,
style: mediumStyle,
),
const SizedBox(
height: 10,
),
Container(
decoration: BoxDecoration(
color: Colors.white,
border: Border.all(
color: Colors.black38,
),
borderRadius: BorderRadius.circular(10.0),
),
padding: const EdgeInsets.only(
left: 8.0,
),
child: widget),
],
),
);
}
}
const mediumStyle = TextStyle(
fontSize: 20,
fontWeight: FontWeight.bold,
);Metadata
14
likes
160
points
75
downloads
Publisher
Weekly Downloads
Metadata
An Android Plugin for Serial Communication which allows you to read and write the data through the available ports
Documentation
License
BSD-3-Clause (license)
Dependencies
flutter, plugin_platform_interface
