enter image description here
在这里，我从API中获取第一张卡中的"投票"数据
我正在尝试通过按下递增和递减按钮来递增后端中的"投票"值数据（不影响Api响应）（后端我们需要通过取原始值来递增"投票"值）
我已尝试将"投票"数据存储在变量中，并在后端递增投票值，然后打印后端递增/递减值
这是密码

return Card(
                child: Column(
                  children: [
                    Row(
                      children: [
                        Container(
                          height: 140,
                          width: 70,
                          child: Card(
                            semanticContainer: true,
                            clipBehavior: Clip.antiAliasWithSaveLayer,
                            shape: RoundedRectangleBorder(
                              borderRadius: BorderRadius.circular(10.0),
                            ),
                            elevation: 5,
                            margin: EdgeInsets.all(5),
                            child: Column(
                              children: [
                                IconButton(
                                    onPressed: () {},
                                    icon: const Icon(Icons.arrow_drop_up,
                                        size: 50)),
                                Text(result![index].voting.toString()),
                                IconButton(
                                    onPressed: () {},
                                    icon: const Icon(Icons.arrow_drop_down,
                                        size: 45)),
                                const Text("Votes"),
                              ],
                            ),
                          ),
                        ),
                        Container(
                          height: 140,
                          width: 80,
                          child: Card(
                            semanticContainer: true,
                            clipBehavior: Clip.antiAliasWithSaveLayer,
                            shape: RoundedRectangleBorder(
                              borderRadius: BorderRadius.circular(5.0),
                            ),
                            elevation: 5,
                            margin: const EdgeInsets.all(5),
                            child: Image.network(
                                result[index].poster.toString(),
                                fit: BoxFit.fill),
                          ),
                        ),
                        Expanded(
                            child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Text(result![index].title.toString(),
                                style: const TextStyle(fontSize: 25)),
                            const SizedBox(
                              height: 10,
                            ),
                            Text(
                                'Genre:${result![index].genre.toString()}'),
                            Text(
                                'Director:${result![index].director.first.toString()}'),
                            Text(
                                'Writter :${result![index].writers.first.toString()}'),
                            Row(
                              children: [
                                Text(result![index].runTime.toString()),
                                const Text("|"),
                                Text(result![index].language.toString()),
                                const Text("|"),
                                Text(result[index].releasedDate.toString()),
                              ],
                            ),
                            Row(
                              children: <Widget>[
                                Text(
                                    '${result![index].pageViews.toString()} Views'),
                                const Text("||"),
                                Text(
                                    'Voted By ${result[index].voting}people'),
                              ],
                            ),
                          ],
                        ))
                      ],
                    ),
                    Row(
                      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                      children: [
                        Padding(
                          padding: const EdgeInsets.all(10.0),
                          child: SizedBox(
                              height: 35,
                              width: 330,
                              child: ElevatedButton(
                                onPressed: () {},
                                style: TextButton.styleFrom(
                                  primary: Colors.white,
                                  backgroundColor: Colors.blue,
                                  // minimumSize: const Size.fromHeight(20),// Background Color
                                ),
                                child: const Text("Watch Trailor",
                                    style: TextStyle(fontSize: 15)),
                              )),
                        ),
                      ],
                    ),
                  ],
                ),
              );
            },
          ),
        ),
 
);

}}