Flutter 输入框弹框

Future<void> _chooseNetWork(context) async {

    showCupertinoDialog(
        context: context,
        builder: (context) {
          return CupertinoAlertDialog(
            title: Text('温馨提示'),
            content: Card(
              elevation: 0.0,
              child: Column(
                children: <Widget>[
                  Text('请输入正确的图片地址哦。'),
                  CupertinoTextField(
                    

                  ),
                ],
              ),
            ),
            actions: <Widget>[
              CupertinoDialogAction(
                onPressed: () {
                  Navigator.pop(context);
                },
                child: Text('取消'),
              ),
              CupertinoDialogAction(
                onPressed: () {
                  Navigator.pop(context);
                },
                child: Text('确定'),
              ),
            ],
          );
        });


  }