CODEWITHSUNDEEP
flutterdart
Paul Toal
Paul Toal

Reputation: 134

How can I create a sub-timer in flutter?

I have a periodic timer in my Flutter app, which changes some values on a page every x seconds:

periodicTimer = new Timer.periodic(Duration(seconds: timer), (Timer t) {
            setState(() {
              if (globals.selectedBottomNav == 0) {
                nextKey();
              } else {
                nextCircleKey();
              }
            });
          });

However, I need to be able to perform another action in a shorter time. So, for example, if my timer variable is set to 5 seconds, I need to be able to run my setState every 5 seconds, but after 3 seconds of each timed loop, I want to run some other code.

Any help on how I could achieve that? I've tried with various nested Timer and Timer.periodic options, but get strange results.

Thanks

Upvotes: 1

Views: 758

Answers (2)

Lee3
Lee3

Reputation: 3067

I see nothing wrong with this simple implementation. If you are having unexpected behavior with this, please update your question with a detailed explanation of expected vs actual behavior, as well as any other solutions you have tried.

periodicTimer = new Timer.periodic(Duration(seconds: timer), (Timer t) {
  Timer(Duration(seconds: 3), () {
    // perform other operations here
  });

  setState(() {
    if (globals.selectedBottomNav == 0) {
      nextKey();
    } else {
      nextCircleKey();
    }
  });
});

Upvotes: 0

Alex Schneider
Alex Schneider

Reputation: 384

If you're set on having this done using a single timer, how about just shortening that timers duration and count the seconds yourself

int secondsCounter = 0;
periodicTimer = new Timer.periodic(Duration(seconds: 1), (Timer t) {
  secondsCounter++;
  
  if(secondsCounter == 3){
    // do stuff that's supposed to happen after 3 seconds
  } else if(secondsCounter == 5){
    // do stuff that's supposed to happen after 5 seconds
  }
  
  if(secondsCounter >= 5){
    secondsCounter = 0;
  }
});

Upvotes: 1

Related Questions