Flutter分页滚动插件pagination_scroll_get的使用

Flutter分页滚动插件pagination_scroll_get的使用

在本教程中，我们将详细介绍如何在Flutter项目中使用pagination_scroll_get插件来实现分页滚动功能。该插件可以帮助你轻松地在列表视图中添加分页加载更多数据的功能。

安装与导入

首先，在你的pubspec.yaml文件中添加依赖：

dependencies:
  pagination_scroll_get: ^0.0.1

然后在你的Dart文件中导入该包：

import 'package:pagination_scroll_get/pagination_scroll.dart';

使用示例

以下是一个完整的示例代码，展示了如何使用pagination_scroll_get插件来实现水平方向的分页滚动。

import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:pagination_scroll_get/pagination_scroll.dart';

// 假设GetData类已经定义好，用于处理API调用和数据获取逻辑
class GetData extends GetxController {
  var posts = [].obs;
  var apiCallStatus = ApiCallStatus.initial.obs;

  Future<void> loadMoreData() async {
    // 模拟异步加载更多数据
    await Future.delayed(Duration(seconds: 2));
    
    // 添加一些假数据
    posts.addAll([
      {"title": "标题1", "body": "这是第一条数据"},
      {"title": "标题2", "body": "这是第二条数据"},
      {"title": "标题3", "body": "这是第三条数据"},
    ]);

    // 更新状态
    apiCallStatus.value = ApiCallStatus.success;
  }
}

enum ApiCallStatus { initial, loading, success, error }

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  MyApp({super.key});

  ScrollController scrollController = ScrollController();

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Material App',
      home: Scaffold(
        appBar: AppBar(),
        body: GetBuilder<GetData>(
          init: GetData(),
          builder: (logic) {
            return logic.apiCallStatus.value == ApiCallStatus.loading
                ? const Center(child: CircularProgressIndicator())
                : PaginationScrollScreen(
                    showWidget: ListView.separated(
                      controller: scrollController,
                      itemCount: logic.posts.length,
                      scrollDirection: Axis.horizontal,
                      itemBuilder: (context, index) => Container(
                        margin: const EdgeInsets.symmetric(
                          horizontal: 16,
                          vertical: 12,
                        ),
                        decoration: BoxDecoration(
                          color: Colors.white,
                          boxShadow: [
                            BoxShadow(color: Colors.grey.withOpacity(0.2)),
                          ],
                        ),
                        child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            const SizedBox(height: 16),
                            Text(
                              logic.posts[index].title,
                              style: const TextStyle(
                                fontSize: 20,
                                fontWeight: FontWeight.w600,
                              ),
                            ),
                            const SizedBox(height: 16),
                            Text(
                              logic.posts[index].body,
                              style: const TextStyle(
                                fontSize: 16,
                              ),
                            ),
                          ],
                        ),
                      ),
                      separatorBuilder: (context, index) => const SizedBox(
                        height: 20,
                      ),
                    ),
                    scrollController: scrollController,
                    loadingFunction: () => logic.loadMoreData(),
                    scrollDirection: Axis.horizontal,
                  );
          },
        ),
      ),
    );
  }
}