Is there a way to convert time value into double or int? Here's is the code to my timer which I wanted to change into double value because I wanted it to hold the time value as a double so later on I want to calculate the total price based on the data from the timer.I've tried the convert method but its seems to failed and I try to search other solution but mostly it was python language solution.
import 'dart:async';
import 'dart:developer';
import 'package:flutter/material.dart';
import 'package:latestfyp/QR/qrexit.dart';
import 'package:path/path.dart';
import 'package:qr_code_scanner/qr_code_scanner.dart';
import 'dart:developer';
import 'dart:io';
import 'package:flutter/foundation.dart';
import '../QR/qrenter.dart';
class CountdownPage extends StatefulWidget {
const CountdownPage({Key? key}) : super(key: key);
@override
State<CountdownPage> createState() => _CountdownPageState();
}
class _CountdownPageState extends State<CountdownPage> {
Barcode? result;
QRViewController? controller;
final GlobalKey qrKey = GlobalKey(debugLabel: 'QR');
dynamic data;
dynamic data1;
double test = 0.000083333;
var total;
static const countdownDuration = Duration(seconds: 0);
Duration duration = Duration();
Timer? timer;
bool isCountdown = true;
void initState(){
super.initState();
startTimer();
reset();
}
// @override
// void reassemble() {
// super.reassemble();
// if (Platform.isAndroid) {
// controller!.pauseCamera();
// }
// controller!.resumeCamera();
// }
void reset(){
if (isCountdown){
setState(() => duration = countdownDuration);
}
else{
setState(() => duration = Duration());
}
}
void addTime(){
final addSeconds = isCountdown? 1 : 1;
setState(() {
final seconds = duration.inSeconds addSeconds;
if(seconds <0) {
timer?.cancel();
}
else{
duration = Duration(seconds: seconds);
}
});
}
void startTimer(){
timer = Timer.periodic(Duration(seconds: 1),(_) => addTime());
}
void stopParking(BuildContext context) {
Navigator.of(context).pushReplacement(
MaterialPageRoute(builder: (context) => QR()));
}
Future<void> _navigateAndDisplaySelection(BuildContext context) async {
// Navigator.push returns a Future that completes after calling
// Navigator.pop on the Selection Screen.
final result = await Navigator.push(
context,
// Create the SelectionScreen in the next step.
MaterialPageRoute(builder: (context) => const QR()),
);
}
void stopTimer({bool resets = true}){
// data = duration *60;
if (resets){
reset();
}
setState(() => timer?.cancel());
}
@override
Widget build(BuildContext context) => Scaffold(
body: Center(child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
buildTime(),
// const SizedBox(height: 70),
buildButtons(),
// TextButton(
// child: Text('Scan to End Parking Time'),
// onPressed: (){
// Navigator.push(context,MaterialPageRoute(builder: (context) => QR()));
// },
// ),
],
)),
);
Widget buildButtons(){
final isRunning = timer == null? false : timer!.isActive;
// final isCompleted = duration.inSeconds == 0;
return isRunning
?Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
TextButton(
child: Text('Start timer'),
onPressed:(){startTimer();},
),
TextButton(
child: Text('Stop'),
onPressed:(){
if(isRunning){
stopTimer(resets: false,);
}
},
),
TextButton(
child: Text('Cancel'),
onPressed: stopTimer,
),
TextButton(
child: Text('Scan to end parking'),
// onPressed: () => QR(),
onPressed: (){
data = timer;
data1 = duration * 60 * 60;
total = data1.toString() ;
Navigator.push(this.context,MaterialPageRoute(builder: (context) => QRExit(price: total.toString(), duration:data.toString())));
},
),
],
)
:TextButton(
child: Text('Start Timer'),
onPressed:(){
startTimer();
}
);
}
Widget buildTime() {
String twoDigits(int n) => n.toString().padLeft(2,'0');
// final hours = twoDigits(duration.inHours);
// final minutes = twoDigits(duration.inMinutes.remainder(60));
final seconds = twoDigits(duration.inSeconds.remainder(60));
return Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
// buildTimeCard(time: hours , header: 'Hours'),
// const SizedBox(width: 8),
// buildTimeCard(time: minutes , header: 'Minutes'),
const SizedBox(width: 8),
buildTimeCard(time: seconds , header: 'Seconds'),
],
);
}
Widget qr(){
return Scaffold(
body: Column(
children: <Widget>[
Expanded(flex: 4, child: _buildQrView(this.context)),
Expanded(
flex: 1,
child: FittedBox(
fit: BoxFit.contain,
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Container(
margin: EdgeInsets.all(25),
child: SizedBox(
height: 15,
width: 55,
child: ElevatedButton(
onPressed: () async{
await controller?.resumeCamera();
},
child: Text('Scan', style: TextStyle(fontSize: 10)),
),
),
)
],
),
],
),
),
)
],
),
);
}
Widget _buildQrView(BuildContext ctx) {
// For this example we check how width or tall the device is and change the scanArea and overlay accordingly.
var scanArea = (MediaQuery.of(ctx).size.width < 400 ||
MediaQuery.of(ctx).size.height < 400)
? 150.0
: 300.0;
// To ensure the Scanner view is properly sizes after rotation
// we need to listen for Flutter SizeChanged notification and update controller
return QRView(
key: qrKey,
onQRViewCreated: _onQRViewCreated,
overlay: QrScannerOverlayShape(
borderColor: Colors.red,
borderRadius: 10,
borderLength: 30,
borderWidth: 10,
cutOutSize: scanArea),
onPermissionSet: (ctrl, p) => _onPermissionSet(ctx, ctrl, p),
);
}
void _onQRViewCreated(QRViewController controller) {
setState(() {
this.controller = controller;
});
controller.scannedDataStream.listen((scanData) {
setState(() {
result = scanData;
// data = result;
if(result != null){
// MaterialPageRoute(builder: (context) => Test());
Navigator.push(
this.context,
MaterialPageRoute(builder: (context) => const CountdownPage()));
}
});
});
}
void _onPermissionSet(BuildContext context, QRViewController ctrl, bool p) {
log('${DateTime.now().toIso8601String()}_onPermissionSet $p');
if (!p) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text('no Permission')),
);
}
}
@override
void dispose() {
controller?.dispose();
super.dispose();
}
Widget buildTimeCard({required String time, required String header}) =>
Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
padding: EdgeInsets.all(8),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(20),
color: Colors.black,
),
child:
Text(
time,
style: const TextStyle(
fontWeight: FontWeight.bold,
color: Colors.white,
fontSize: 60,
),
),
),
const SizedBox(height: 20),
Text(header)
],
);
}
CodePudding user response：
You can use:
countdownDuration.inSeconds
which will return the whole Duration in seconds, also there are other units available like minutes, microseconds, and hours.
CodePudding user response：
Here is what I understand:
// convert hours & min into double
String getTime(int hours, int minutes) {
String hour = hours.toString();
String minute = minutes.toString();
if (hours < 10) {
hour = '0$hours';
}
if (minutes < 10) {
minute = '0$minutes';
}
return '$hour.$minute';
}
You can change this according to your need and convert a string into double/int.