Show confirm dialog in flutter

show_confirm_dialog.dart

showDialog(
  context: context,
  builder: (BuildContext context) {
    return AlertDialog(
      title: Text(""),
      content: Text("確定刪除？"),
      actions: <Widget>[
        FlatButton(
          child: Text("取消"),
          onPressed: () {
            Navigator.of(context).pop();
          },
        ),
        FlatButton(
          child: Text("刪除"),
          onPressed: () {
            model.deleteRoom(index);
          },
        ),
      ],
    );
  },
);