showModalPopupTitlesPicker function

Future<int?> showModalPopupTitlesPicker(BuildContext context, List<String> titles, { double? height, })

Implementation

Future<int?> showModalPopupTitlesPicker(
  BuildContext context,
  List<String> titles, {
  double? height,
}) {
  return showCupertinoModalPopup(
    context: context,
    builder: (context) {
      int index = 0;
      return Container(
        height: height ?? 260,
        color: Colors.white,
        child: Column(
          children: <Widget>[
            Container(
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: <Widget>[
                  BaseButton(
                    onPressed: () {
                      Navigator.of(context).pop(null);
                    },
                    child: Text(
                      '取消',
                    ),
                  ),
                  BaseButton(
                    onPressed: () {
                      Navigator.of(context).pop(index);
                    },
                    child: Text(
                      '确认',
                    ),
                  ),
                ],
              ),
            ),
            Container(
              height: (height ?? 260) - 60,
              child: CupertinoPicker(
                backgroundColor: Colors.white,
                itemExtent: 36, //item的高度
                onSelectedItemChanged: (changed) {
                  index = changed;
                },
                children: titles.map((text) => Text(text)).toList(),
              ),
            ),
          ],
        ),
      );
    },
  );
}