return await showCupertinoModalPopup(
    context: context,
    builder: (BuildContext context) => CupertinoActionSheet(
        title: Text('title'),
        actions: <Widget>[
          CupertinoActionSheetAction(
            child: Text('camera'),
            onPressed: () {
            },
          ),
          CupertinoActionSheetAction(
            child: Text('image'),
            onPressed: ()  {
            },
          ),
        ],
        cancelButton: CupertinoActionSheetAction(
          child: Text('cancel'),
          isDefaultAction: true,
          onPressed: () {
            Navigator.pop(context);
          },
        )),
  );