flutter_refresh_loadmore 0.1.7

A refresh loadmore listview package. can pull refresh listview and loadmore ,use the libray listview swrap form the new widget.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter_refresh_loadmore/flutter_refresh_loadmore.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        appBar: AppBar(
          // Here we take the value from the MyHomePage object that was created by
          // the App.build method, and use it to set our appbar title.
          title: Text("title"),
        ),
        body: Myexample(),
      )
    );
  }
}

class Myexample extends StatefulWidget{
  @override
  State<StatefulWidget> createState() {
    return _MyexampleState();
  }

}
class _MyexampleState extends State<Myexample>{
  @override
  void initState() {
    list.add("a");
    list.add("a");
    list.add("a");
    list.add("a");
    list.add("a");list.add("a");list.add("a");list.add("a");list.add("a");list.add("a");
    list.add("a");list.add("a");list.add("a");list.add("a");list.add("a");

    super.initState();
  }
  @override
  Widget build(BuildContext context) {
    return getList();
  }


  GlobalKey<ListViewRefreshLoadMoreWidgetState> _listViewKey = new GlobalKey();
  bool hasMoreData = true;

  List<String> list=new List<String>();

  Widget getList() {
    return ListViewRefreshLoadMoreWidget(
      key: _listViewKey,
      //listview  count
      itemCount: list.length,

      //listview 的item widget
      swrapInsideWidget: (buildContex, index) {
        return Container(
          margin: EdgeInsets.only(bottom: 10),
          color: Colors.black38,
          height: 50,
          child: Center(child: Text("${list[index]}  ${index}"),),
        );
      },
      //下拉刷新
      refrshCallback: () async {
        await Future.delayed(Duration(milliseconds: 1000),(){
          list=new List();
          list.add("b");list.add("b");list.add("a");list.add("a");list.add("a");
          list.add("a");list.add("a");list.add("vvvv");
          list.add("a");list.add("a");list.add("vvvv");
          list.add("a");list.add("a");list.add("vvvv");
          list.add("a");list.add("a");list.add("vvvv");
        });//获取数据 添加到list
        _listViewKey.currentState.changeData(list.length);
      },
      //加载更多
      loadMoreCallback: () async {
        await Future.delayed(Duration(milliseconds: 1000),(){
          list.add("a");list.add("a");list.add("a");list.add("a");list.add("a");
          list.add("a");list.add("a");list.add("a");list.add("a");list.add("a");
          //如果加载完毕 hasMoreData设置为true

        });//获取数据 添加到list
        _listViewKey.currentState.changeData(list.length,hasMoreData: hasMoreData);
      },

      /// 加载更多 用
      hasMoreData: hasMoreData,
//    ///footer widget 非必须传有默认
//    footerWidget: (statusStr){
//      return null;
//    },
//    //head widget 非必传有默认
//    headWidget: (headstate,currentHeight){
//    return null;
//    ;
//    },
    );
  }

}