2.1.6版本中上拉加载后，不能下拉刷新的问题

[impyf104]

1.Flutter版本：1.22.3

2.flutter_easyrefresh版本：2.1.6

3.问题描述：
在EasyRefresh中的onLoad函数中使用await后，上拉加载会出现卡在加载中的状态，footer不消失，使得不能继续使用上拉加载和下拉刷新，多次上拉后可复现。
若使用then，onLoad可能会执行2次。

4.可复现代码
import 'package:flutter/material.dart';
import 'package:flutter_easyrefresh/easy_refresh.dart';

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

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

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

final String title;

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

Future onLoad() async {
await Future.delayed(Duration(milliseconds: 300));
print('await onLoad');
}

Future onLoadThen() async {
Future.delayed(Duration(milliseconds: 300)).then((value) {
print('then onLoad');
});
}

Future onRefresh() async {
await Future.delayed(Duration(milliseconds: 300));
}

class _MyHomePageState extends State {
@OverRide
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: EasyRefresh(
child: ListView.builder(
itemBuilder: (BuildContext context, int index) {
return Text('$index');
},
itemCount: 10,
),
onLoad: onLoad,
// onLoad: onLoadThen,
onRefresh: onRefresh,
),
);
}
}

[junixapp]

数据为空的时候，并且设置了emptyWidget，上拉必卡住。必现

[shuizhuyu1015]

me too. footer的enableInfiniteLoad设置为false，上拉加载必会卡主无法加载，同时无法下拉刷新，enableInfiniteLoad设为true到底部自动触发加载可解决

[xuelongqy]

v2.1.8已修复