Flutter：在 PopupMenuItem 里面使用 setState

[wanghao]

PopupMenuItem(
          child: StatefulBuilder(
            builder: (context, setState) => ChoiceChip(
              visualDensity: VisualDensity.compact,
              label: Text('报名成功'),
              selected: currentSelected == 's',
              onSelected: (value) {
                setState(() {
                  print('hi');
                  currentSelected = 's';
                });
              },
            ),
          ),
          value: 'a',
        ),

使用一个 StatefulBuilder 作为 PopupMenuItem 的 child 。