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How To Have A Slider In Flutter With Specific Divisions

- 1 answer

I want to have a slider in flutter with numbers like .5,1,2,3,4,5,10,15. How is this possible. I know that the divisions creates divisions in the slider that are linear. Is this possible to have my own numbers as each dot instead of a linear slider?

Slider(
  value: seconds,
  max: 3600,
  divisions:
      120, // this is where i want to have a not a linear division
  label: (seconds / 60.0).toStringAsFixed(1),
  onChanged: (double value) {
    setState(() {
      seconds = value;
    });
  },
),
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Answer

I think the following snippet is what you are looking for:

final List<double> values = [0.5, 1.0, 2.0, 3.0, 4.0, 5.0, 10.0, 15.0];
int selectedIndex = 0;

Slider(
   value: selectedIndex.toDouble(),
   min: 0,
   max: values.length - 1,
   divisions: values.length - 1,
   label: values[selectedIndex].toString(),
   onChanged: (double value) {
   setState(() {
        selectedIndex = value.toInt();
      });
   },
),

This is the result:

iPhone simulator screen recording

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source: stackoverflow.com
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