xb_refresh

Description:

xb refresh

安装：
flutter pub add xb_scaffold
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使用：
// ignore_for_file: library_private_types_in_public_api

import 'package:flutter/material.dart';
import 'package:xb_scaffold/xb_scaffold.dart';
import 'xb_refresh.dart';
import 'xb_refresh_controller.dart';

class XBRefreshDemo extends StatefulWidget {
const XBRefreshDemo({super.key});

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

class _XBRefreshDemoState extends State<XBRefreshDemo> {
final ScrollController _controller = ScrollController();

final XBRefreshController xbRefreshController = XBRefreshController();

int _itemCount = 10;

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text("xb refresh demo"),
actions: [
XBButton(
onTap: () {
xbRefreshController.refresh();
},
child: Container(
color: Colors.transparent,
child: const Padding(
padding: EdgeInsets.all(8.0),
child: Text("开始刷新"),
),
)),
],
),
body: Container(
height: screenH * 0.8,
width: screenW * 0.8,
color: colors.randColor,
child: XBRefresh(
controller: xbRefreshController,
needLoadMore: true,
needRefresh: true,
initRefresh: true,
// needShowComplete: true,
// needShowHasMoreFooter: true,

///开始加载更多的回调
onBeginLoadMore: () {
Future.delayed(const Duration(seconds: 2), () {
bool hasMore = false;
if (_itemCount < 20) {
hasMore = true;
setState(() {
_itemCount += 2;
});
}

///结束加载更多，传是否有新数据
xbRefreshController.endLoadMore(hasMore);
});
},
onBeginRefresh: () {
Future.delayed(const Duration(seconds: 1), () {
setState(() {
_itemCount = 10;
});
xbRefreshController.endRefresh();
});
},
headerCompleteBuilder: (height) {
return Container(
height: height,
color: Colors.red,
child: const Center(
child: Text("完成刷新"),
),
);
},
footerHasMoreBuilder: (height) {
return Container(
height: height,
color: Colors.green,
child: const Center(
child: Text("拉取新数据完成"),
),
);
},
// child: CustomScrollView(
// controller: _controller,
// slivers: <Widget>[
// SliverList(
// delegate: SliverChildBuilderDelegate((ctx, index) {
// return Cell("$index", () {});
// }, childCount: _itemCount))
// ],
// )
// child: ListView.builder(
// controller: _controller,
// itemCount: _itemCount,
// itemBuilder: (context, index) {
// return Cell("$index", () {});
// },
// ),
child: Container(
height: screenH * 0.5,
color: colors.randColor,
),
),
));
}

@override
void dispose() {
_controller.dispose();
super.dispose();
}
}

class Cell extends StatelessWidget {
static const height = 44.0;
final String title;
final VoidCallback onPressed;

const Cell(this.title, this.onPressed, {super.key});

@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: onPressed,
child: Container(
height: height,
color: Colors.black38,
alignment: Alignment.center,
child: Column(
children: <Widget>[
Expanded(
child: Center(
child: Text(title,
style: const TextStyle(color: Colors.white)))),
Container(
height: 1,
color: Colors.white,
)
],
),
),
);
}
}

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