Sorting a list

[Russ Brewer]

This should be simple. I am trying to sort a list that contains many BeerStat objects by a parameter. In this case I want acceding and descending percent change.

I have this code, that I don't think is referencing my data corrector to perform a sort. The data is loaded into productsData.

                    ToggleSwitch(

                        initialLabelIndex: 0,

                        labels: ['ASC', 'DESC'],

                        minHeight: 30.0,

                        fontSize: 12.0,

                        cornerRadius: 20.0,

                        onToggle: (index) {

                          print('switched to : $index');

                          setState(() {

                            productsData.items.sort((a,b) => a.ptcchg.compareTo(b.ptcchg));

                          });

                        },

                      ),

I think it has something to do with my data having integers 0-251, as keys. I'm not sure how to sort my data now that it is in a list.

Thank you

[Suzuki Tomohiro]

Your ToggleSwitch sorts the data by “ptcchg“ property regardless of the “index” variable. You want to change sort field based on the value of the variable. I guess one if-statement would solve this.

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