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PatientApp-KKUMC/lib/pages/medical/my_trackers/temperature.dart

153 lines
6.1 KiB
Dart

import 'dart:io';
import 'package:diplomaticquarterapp/theme/colors.dart';
import 'package:diplomaticquarterapp/uitl/ble_utils.dart';
import 'package:diplomaticquarterapp/uitl/bluetooth_off.dart';
import 'package:diplomaticquarterapp/uitl/translations_delegate_base.dart';
import 'package:diplomaticquarterapp/widgets/buttons/defaultButton.dart';
import 'package:diplomaticquarterapp/widgets/others/app_scaffold_widget.dart';
import 'package:flutter/material.dart';
import 'package:flutter_blue_plus/flutter_blue_plus.dart';
import 'package:permission_handler/permission_handler.dart';
class TemperatureHomePage extends StatefulWidget {
@override
State<TemperatureHomePage> createState() => _TemperatureHomePageState();
}
class _TemperatureHomePageState extends State<TemperatureHomePage> {
String connectionStatus = "disconnected";
String currentTempInCelsius = "0.0";
BluetoothDevice currentConnectedDevice;
@override
void dispose() {
super.dispose();
currentConnectedDevice.disconnect(timeout: 15);
}
@override
Widget build(BuildContext context) {
return AppScaffold(
appBarTitle: TranslationBase.of(context).temperature,
showNewAppBar: true,
isShowDecPage: false,
showNewAppBarTitle: true,
backgroundColor: Color(0xffF8F8F8),
body: SingleChildScrollView(
child: StreamBuilder<BluetoothAdapterState>(
stream: FlutterBluePlus.adapterState,
initialData: BluetoothAdapterState.unknown,
builder: (c, snapshot) {
final adapterState = snapshot.data;
if (adapterState == BluetoothAdapterState.on) {
return Container(
margin: EdgeInsets.only(top: 200.0, left: 50.0, right: 50.0),
child: Column(
children: [
Center(
child: DefaultButton(
TranslationBase.of(context).start.toUpperCase(),
() {
checkBLEPermissions();
},
color: CustomColors.green,
),
),
SizedBox(
height: 50.0,
),
Text("Connection state: $connectionStatus"),
SizedBox(
height: 50.0,
),
Text("Current Temp: $currentTempInCelsius"),
],
),
);
} else {
FlutterBluePlus.stopScan();
return SizedBox(height: 300.0, child: BluetoothOffScreen(adapterState: adapterState));
}
}),
),
);
}
void checkBLEPermissions() {
[Permission.location, Permission.storage, Permission.bluetooth, Permission.bluetoothConnect, Permission.bluetoothScan].request().then((status) {
startBLEConnection();
});
}
void startBLEConnection() {
if (FlutterBluePlus.isScanningNow == false) {
setState(() {
connectionStatus = "Connecting...";
});
FlutterBluePlus.startScan(timeout: const Duration(seconds: 5), androidUsesFineLocation: false).then((value) {
List<ScanResult> blueToothDevices = [];
// List<ScanResult> blueToothDevices = value;
blueToothDevices.forEach((element) async {
if (element.device.localName.isNotEmpty) {
if (element.device.localName.toLowerCase() == "temp") {
element.device.connectionState.listen((BluetoothConnectionState state) async {
setState(() {
connectionStatus = state.toString();
});
if (state == BluetoothConnectionState.disconnected) {
// typically, start a periodic timer that tries to periodically reconnect.
// Note: you must always re-discover services after disconnection!
}
if (state == BluetoothConnectionState.connected) {
currentConnectedDevice = element.device;
List<BluetoothService> services = await element.device.discoverServices();
services.forEach((service) {
if (service.serviceUuid.toString().toLowerCase() == BLEUtils.TEMPERATURE_SERVICE) {
print(service.serviceUuid);
service.characteristics.forEach((characteristic) async {
if (characteristic.characteristicUuid.toString().toLowerCase() == BLEUtils.TEMPERATURE_CHARACTERISTIC) {
print(characteristic.characteristicUuid);
characteristic.onValueReceived.listen((event) {
print("onValueReceived Stream");
print(event);
setState(() {
currentTempInCelsius = convertIntListToHex(event);
String currentTempInFahrenheit = ((num.parse(currentTempInCelsius) * 1.8) + 32).toStringAsFixed(1);
currentTempInCelsius = currentTempInCelsius + "\u2103" + " / " + currentTempInFahrenheit + "\u2109";
});
});
await characteristic.setNotifyValue(true);
}
});
return true;
}
});
}
});
await element.device.connect(timeout: Duration(seconds: 35));
return true;
}
}
});
});
}
}
String convertIntListToHex(List<int> byteArray) {
String b = (byteArray.map((x) {
return x.toRadixString(16);
})).join(";");
List<String> hexString = b.split(";");
print("HexString: $hexString");
String returnString = hexString[3] + hexString[2] + hexString[1];
print("Temp Hex String: $returnString");
final number = int.parse(returnString, radix: 16);
print("Temp Number: ${number * 0.01}");
return (number * 0.01).toStringAsFixed(1);
}
}