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Description:

refresh loadmore

refresh_loadmore #
A Flutter component that supports pull-down refresh and pull-up to load more data (一个组件，支持下拉刷新，上拉加载更多数据).
Getting Started #
Add this line to pubspec.yaml ( 添加这一行到pubspec.yaml)
dependencies:
refresh_loadmore: ^2.0.7
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How To Use #
Use the class RefreshLoadmore
Properties and functions:
/// Callback function on pull down to refresh | 下拉刷新时的回调函数
final Future<void> Function()? onRefresh;

/// Callback function on pull up to load more data | 上拉以加载更多数据的回调函数
final Future<void> Function()? onLoadmore;

/// Whether it is the last page, if it is true, you can not load more | 是否为最后一页，如果为true，则无法加载更多
final bool isLastPage;

/// Child widget | 子组件
final Widget child;

/// Prompt text widget when there is no more data at the bottom | 底部没有更多数据时的提示文字组件
final Widget? noMoreWidget;

/// Prompt widget when loading new data at the bottom | 正在加载数据时的提示组件
final Widget? loadingWidget;

/// Prompt padding for body if needed | 你可以自定义padding
final EdgeInsetsGeometry? padding;

/// You can use your custom scrollController, or not | 你可以使用自定义的 ScrollController，或者不使用
final ScrollController? scrollController;

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Examples #
import 'package:flutter/material.dart';
import 'package:refresh_loadmore/refresh_loadmore.dart';

void main() {
runApp(MyApp());
}

class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.purple,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}

class MyHomePage extends StatefulWidget {
MyHomePage({Key? key, required this.title}) : super(key: key);

final String title;

@override
_MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
/// is the last page | 是否为最后一页
bool isLastPage = false;

List? list;
int page = 1;

@override
void initState() {
super.initState();
loadFirstData();
}

Future<void> loadFirstData() async {
await Future.delayed(Duration(seconds: 1), () {
setState(() {
list = [
'dddd',
'sdfasfa',
'sdfgaf',
'adsgafg',
'dddd',
'sdfasfa',
'sdfgaf',
'adsgafg',
'dddd',
'sdfasfa',
'sdfgaf',
'adsgafg'
'adsgafg',
'dddd',
'sdfasfa',
'sdfgaf',
'adsgafg'
];
isLastPage = false;
page = 1;
});
});
}

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: list != null
? RefreshLoadmore(
onRefresh: loadFirstData,
onLoadmore: () async {
await Future.delayed(Duration(seconds: 1), () {
setState(() {
list!.addAll(['123', '234', '457']);
page++;
});
print(page);
if (page >= 3) {
setState(() {
isLastPage = true;
});
}
});
},
noMoreWidget: Text(
'No more data, you are at the end',
style: TextStyle(
fontSize: 18,
color: Theme.of(context).disabledColor,
),
),
isLastPage: isLastPage,
child: list!.isNotEmpty
? Column(
children: list!
.map(
(e) => ListTile(
title: Text(e),
trailing: Icon(Icons.accessibility_new),
),
)
.toList(),
)
: Center(
child: Text('empty'),
),
)
: Center(child: CircularProgressIndicator()),
);
}
}

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Renderings #