How to set detection intervals ?

[utamori]

Thanks for the cool scanner. ❤️

I want an arbitrary interval to occur before the next execution of a function written to onDetect.
How can I do this?

I'm new to mobile development and Flutter, so sorry if I'm asking off the mark.

[juliansteenbakker]

You can work with intervals, but something that is more suitable is maybe to check on duplicates.

An interval can be something like

  Timer? _timer; // Declared in your statefull class

// onDetect function of MobileScanner
    onDetect: (barcode, args) {
      if (_timer == null || !_timer!.isActive) {
        _timer = Timer(Duration(seconds: 2), () {});
        // do something
      }
  }

To check on duplicates you can do something like this:

String? barcode; // Declared in your statefull class

// onDetect function of MobileScanner
onDetect: (barcode, args) {
  if (this.barcode != barcode.rawValue) {
    // New barcode found !!
    setState(() {
      this.barcode = barcode.rawValue;
    });
  }
}

[utamori]

Thank you! 🎉
Tried both and they worked perfectly.
Most of the time I'm fine with checking for duplicates,
but there are times when I want to scan a series of ones with the same code, so I appreciate the first example too!