How to keep the current option in group button flutter

Question

I was used group_button package from flutter to make user can select many options. After upgrading the library to version 5.0.0 or above, the selectedButtons property has been deprecated. I was save options of user by it but no I can't use it now. I was use it as:


  GroupButton(
                      selectedButtons: setSelectedBtn(index),
                      isRadio: false,
                      spacing: 10,
                      onSelected: (i, isSelected) =>
                          onFilterSelect(index, i, isSelected),
                      buttons: widget.filters[index].value
                          .map((e) => e.value)
                          .toList())),




  setSelectedBtn(index) {
    List<int> result = [];
    var valueSet = widget.filters[index].value;
    bool isSelected = valueSet
        .firstWhere((element) => element.isSelected,
            orElse: () => CategoryFilterValues("", false))
        .isSelected;
    if (!isSelected) {
      return result;
    }

    for (int index = 0; index < valueSet.length; index++) {
      if (valueSet.elementAt(index).isSelected) {
        result.add(index);
      }
    }
    return result;
  }

group_button

How I can save the options now in new version? Anyone can help me to do it.

thank you

Stanisalv ilin · Accepted Answer · 2022-11-18 10:36:45Z

1

Use GroupButtonController. Controller have list of methods to interact with options.

selectIndex(int i) - Select button by index in radio type
unselectIndex(int i) - Unselect button by index in checkbox and radio type
... etc.

More docs and examples you can find here

edited Nov 18, 2022 at 10:36

answered Nov 18, 2022 at 10:36

Stanisalv ilin

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