从下拉菜单中获取选定的文本 (Flutter)

Question

Im already getting the value and using it to add an total item price is it possible to get the selected text from a drop down menu and add it to an array list?

Here is how im creating my MenuItems from firestore.

  final itemExtras = snap.data.documents[i]['op'];
                                      for (var extra in itemExtras) {
                                        if (extra['add'] > 0) {
                                          items.add(
                                            DropdownMenuItem(
                                              child: Text(
                                                extra['name'] +
                                                    ' + Bs. ' +
                                                    extra['add']
                                                        .toString(),
                                                style: TextStyle(
                                                    fontWeight:
                                                        FontWeight.bold),
                                              ),
                                              value: extra['add'],
                                            ),
                                          );
                                        }

and this is the button

DropdownButton(
                                              isExpanded: true,
                                              items: items,
                                              style: Theme.of(context)
                                                  .textTheme
                                                  .title,
                                              onChanged: (selectedValue) {
                                                setState(() {
                                                  dropdownValues[i] =
                                                      selectedValue;
                                                  addPrice =
                                                      dropdownValues.fold(
                                                          0,
                                                          (previous,
                                                                  current) =>
                                                              previous +
                                                              current);
                                                  total = (addPrice +=
                                                      widget.snapshot[
                                                          'price']);
                                                });
                                                print(dropdownValues
                                                        .toString() +
                                                    index.data.toString());
                                              },
                                              hint: Text('Select Extra'),
                                              value: dropdownValues[i],
                                            )

i need to get the extra['name']

Answer 1

将您的DropdownMenuItem.value更改为extra ，而不是extra['add'] ，然后它将是selectedValue的值。