本文介绍了Flutter 实现下拉刷新上拉加载的示例代码,分享给大家,具体如下:
效果图
使用方法
添加依赖
dependencies: pull_to_refresh: ^1.5.7
导入包
import 'package:pull_to_refresh/pull_to_refresh.dart';
页面代码样例
class _MyHomePageState extends State<MyHomePage> { List<String> items = ["1","2","3","4","5","6","7","8"]; RefreshController _refreshController = RefreshController(initialRefresh: false); void _onRefresh() async { // monitor network fetch await Future.delayed(Duration(milliseconds: 1000)); // if failed,use refreshFailed() _refreshController.refreshCompleted(); } void _onLoading() async { // monitor network fetch await Future.delayed(Duration(milliseconds: 1000)); // if failed,use loadFailed(),if no data return,use LoadNodata() items.add((items.length + 1).toString()); if (mounted) setState(() {}); _refreshController.loadComplete(); } @override Widget build(BuildContext context) { return Scaffold( body: SmartRefresher( enablePullDown: true,enablePullUp: true,header: WaterDropHeader(),footer: CustomFooter( builder: (BuildContext context,LoadStatus mode) { Widget body; if (mode == LoadStatus.idle) { body = Text("pull up load"); } else if (mode == LoadStatus.loading) { body = CircularProgressIndicator(); } else if (mode == LoadStatus.failed) { body = Text("Load Failed!Click retry!"); } else if (mode == LoadStatus.canLoading) { body = Text("release to load more"); } else { body = Text("No more Data"); } return Container( height: 55.0,child: Center(child: body),); },),controller: _refreshController,onRefresh: _onRefresh,onLoading: _onLoading,child: ListView.builder( itemBuilder: (c,i) => Card(child: Center(child: Text(items[i]))),itemExtent: 100.0,itemCount: items.length,); } }
完整源代码
https://gitee.com/cxyzy1/flutter_pulldown_refresh
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