Timer starts over when next_question selected - flutter

Question

I'm making a quiz app using Flutter.
I have created a timer of 30 seconds which should start when a new question comes up.
It works fine and it restarts after the next question comes.
But when I click on "Next Question" without choosing an option, it restarts the timer.
I have created that button in such a way that you cannot go to the next question without choosing an option first.
Code:
#override
void initState() {
starttimer();
_questions = getData();
super.initState();
}
int index = 0;
int score = 0;
bool isPressed = false;
bool isAlreadySelected = false;
int timer = 30;
String showtimer = "30";
bool canceltimer = false;
void starttimer() async {
const onesec = Duration(seconds: 1);
Timer.periodic(onesec, (Timer t) {
setState(() {
if (timer < 1) {
t.cancel();
nextQuestion(index++);
} else if (canceltimer == true) {
t.cancel();
} else {
timer = timer - 1;
}
showtimer = timer.toString();
});
});
}
void nextQuestion(int questionLength) {
canceltimer = false;
timer = 30;
if (index == 19 || score == 12) {
showDialog(
context: context,
barrierDismissible: false,
builder: (ctx) => ResultBox(
result: score,
questionLength: questionLength,
));
} else {
if (isPressed) {
setState(() {
index++;
isPressed = false;
isAlreadySelected = false;
starttimer();
});
} else {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: const Text('Please select any option'),
behavior: SnackBarBehavior.floating,
margin: EdgeInsets.symmetric(vertical: 20.0),
));
starttimer();
}
}
}
void checkAnswerAndUpdate(bool value) {
if (isAlreadySelected) {
return;
} else {
if (value == true) {
score++;
setState(() {
isPressed = true;
isAlreadySelected = false;
canceltimer = true;
});
} else if (value == false) {
setState(() {
isPressed = true;
isAlreadySelected = false;
canceltimer = true;
});
}
}
}
void startOver() {
setState(() {
Text('You have already attempted the LL Test');
});
}
#override
Widget build(BuildContext context) {
return FutureBuilder(
future: _questions as Future<List<Question>>,
builder: (ctx, snapshot) {
if (snapshot.connectionState == ConnectionState.done) {
if (snapshot.hasError) {
return Center(
child: Text('${snapshot.error}'),
);
} else if (snapshot.hasData) {
var extractedData = snapshot.data as List<Question>;
return Scaffold(
backgroundColor: background,
appBar: AppBar(
title: const Text('LL Test'),
backgroundColor: background,
shadowColor: Colors.transparent,
actions: [
Padding(
padding: const EdgeInsets.all(18.0),
child: Text(
'Score: $score',
style: TextStyle(fontSize: 18.0),
),
)
],
),
body: Container(
width: double.infinity,
padding: const EdgeInsets.symmetric(horizontal: 10.0),
child: Column(
children: [
// Countdown(
// animation: StepTween(begin: limitTime, end: 0)
// .animate(_controller),
// ),
QuestionWidget(
question: extractedData[index].title,
indexAction: index,
totalQuestions: extractedData.length,
),
const Divider(
color: neutral,
),
const SizedBox(height: 25.0),
for (int i = 0;
i < extractedData[index].options.length;
i++)
GestureDetector(
onTap: () => checkAnswerAndUpdate(
extractedData[index].options.values.toList()[i]),
child: OptionCard(
option: extractedData[index].options.keys.toList()[i],
color: isPressed
? extractedData[index]
.options
.values
.toList()[i] ==
true
? correct
: incorrect
: neutral,
),
),
Expanded(
child: Container(
alignment: Alignment.topCenter,
child: Center(
child: Text(
showtimer,
style: TextStyle(
fontSize: 40.0,
fontWeight: FontWeight.w700,
fontFamily: 'Times New Roman',
color: neutral,
),
),
),
),
),
],
),
),
floatingActionButton: GestureDetector(
onTap: () => nextQuestion(extractedData.length),
child: Padding(
padding: EdgeInsets.symmetric(horizontal: 10.0),
child: NextButton(),
),
),
floatingActionButtonLocation:
FloatingActionButtonLocation.centerFloat,
);
}
} else {
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
CircularProgressIndicator(),
SizedBox(height: 20.0),
Text(
'Please Wait While Questions Are Loading..',
style: TextStyle(
backgroundColor: Color.fromARGB(255, 4, 82, 6),
color: neutral),
),
],
),
);
}
return const Center(
child: Text('NoData'),
);
},
);
}
}
Is it something wrong in my code? What should I do so that timer doesn't startover?

Answer 1

did you call the starttimer() inside else condition?
try to remove it.
} else {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: const Text('Please select any option'),
behavior: SnackBarBehavior.floating,
margin: EdgeInsets.symmetric(vertical: 20.0),
));
// starttimer(); this call the function even its not selected yet
}