loadmore

A loadMore library

Support ListView and SliverList

中文构思思路和使用说明可以看简书

screenshot

whole example

show https://github.com/CaiJingLong/flutter_listview_loadmore

install

in pubspec.yaml

dependencies:
  loadmore: ^2.0.1

import in dartfile:

import 'package:loadmore/loadmore.dart';

use in build:

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text(widget.title),
      ),
      body: Container(
        child: LoadMore(
          isFinish: count >= 60,
          onLoadMore: _loadMore,
          child: ListView.builder(
            itemBuilder: (BuildContext context, int index) {
              return Container(
                child: Text(list[index].toString()),
                height: 40.0,
                alignment: Alignment.center,
              );
            },
            itemCount: count,
          ),
        ),
      ),
    );
  }

  Future<bool> _loadMore() async {
    print("onLoadMore");
    await Future.delayed(Duration(seconds: 0, milliseconds: 100));
    load();
    return true;
  }

properties use:

child: Widget ,required , support ListView ListView.builder ListView.separated, other is not support.
onLoadMore:required A Function , `typedef Future<bool> FutureCallBack();` , reture true is success and status delay,return false or null ,then the status will change to fail.
isFinish: bool, optional, if true, then the status will change to finish ,default is false
delegate: LoadMoreDelegate,optional, see the LoadMoreDelegate class,default is DefaultLoadMoreDelegate
textBuilder: optional, the result will show in loading view ,if you use default delegate. default is DefaultLoadMoreText.chinese,
whenEmptyLoad: bool ,optional, default is true, when [whenEmptyLoad] is true, and when listView children length is 0,or the itemCount is 0,not build loadMoreWidget.

abstract class LoadMoreDelegate {
  const LoadMoreDelegate();

  double widgetHeight(LoadMoreStatus status) => _defaultLoadMoreHeight; // the loadMore height. default is 80.0

  Duration loadMoreDelay() => Duration(milliseconds: _loadMoreDelay);// When widget is created, the refresh delay time is triggered.

  Widget buildChild(LoadMoreStatus status); // build your widget in the loadmore widget.
}

other

homePage: https://github.com/CaiJingLong/flutter_listview_loadmore emailto me : cjl_spy@163.com

LICENSE

APACHE 2.0