RSS / XML parsing - html

Question

Am stuck trying to parse and display rss feed data. How can I easily get these links to all work? What library should be used. Thanks!
Currently using https://pub.dev/packages/webfeed
DART /Flutter mobile application
Cannot seem to parse and render links below:
https://academic.oup.com/rss/site_5267/3133.xml (Returns 405)
https://journals.lww.com/co-anesthesiology/_layouts/15/OAKS.Journals/feed.aspx?FeedType=MostPopularArticles (won't load or import xml)
Have this link working ok:
http://anesthesiology.pubs.asahq.org/rss/site_157/173.xml
import 'dart:io';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:wcm_anes/common/circularIndicator.dart';
import 'package:wcm_anes/customIcons/custom_icons_icons.dart';
import 'package:wcm_anes/styles/colorAsset.dart';
import 'package:wcm_anes/styles/stringAssets.dart';
import 'package:wcm_anes/styles/textStyles.dart';
import 'package:webfeed/webfeed.dart';
import 'package:http/http.dart' as http;
import 'package:url_launcher/url_launcher.dart';
class RssUrlListScreen extends StatefulWidget {
String screenName;
String feedUrl;
String categoryId;
RssUrlListScreen({this.screenName,this.feedUrl,this.categoryId});
#override
_RssUrlListScreenState createState() => _RssUrlListScreenState();
}
class _RssUrlListScreenState extends State<RssUrlListScreen> {
static const String loadingMessage = 'Loading Feed...';
static const String feedLoadErrorMessage = 'Error Loading Feed.';
static const String feedOpenErrorMessage = 'Error Opening Feed.';
String _title;
RssFeed feed;
bool isLoading = false;
updateTitle(title) {
setState(() {
_title = title;
});
}
updateFeed(feed) {
setState(() {
feed = feed;
});
}
Future<void> openFeed(String url) async {
if (await canLaunch(url)) {
await launch(
url,
forceSafariVC: true,
forceWebView: false,
);
return;
}
updateTitle(feedOpenErrorMessage);
}
// Method to load the RSS data.
load() async {
updateTitle(loadingMessage);
loadFeed().then((result) {
if (result == null || result.toString().isEmpty) {
// Notify user of error.
updateTitle(feedLoadErrorMessage);
return;
}
setState(() {
feed = result;
isLoading = false;
});
});
}
// Method to get the RSS data
Future<RssFeed> loadFeed() async {
try {
final client = http.Client();
final response = await client.get(widget.feedUrl);
print("responssssurl>> ${response.body}");
return RssFeed.parse(utf8.decode(response.bodyBytes));
} catch (e) {
print("execption>> $e");
// handle any exceptions here
}
return null;
}
#override
void initState() {
updateTitle(widget.screenName);
isLoading = true;
load();
super.initState();
}
#override
Widget build(BuildContext context) {
return Scaffold(
resizeToAvoidBottomPadding: false,
appBar: AppBar(
brightness: Platform.isIOS?Brightness.light:Brightness.dark,
title:feed != null?Text(feed.title,style:headerTextStyle):Container(),
leading: IconButton(
onPressed: (){
Navigator.pop(context);
},
icon:Icon(Icons.arrow_back_ios,color: ColorAsset.tabColorGray,size:20.0,)),
backgroundColor: Colors.white,
elevation: 0.0,
titleSpacing: 0.0,
centerTitle: true,
),
body: Stack(
children: <Widget>[
feed != null?
feed.items.length>0?ListView.builder(
physics: new ClampingScrollPhysics(),
itemCount: feed.items.length,
itemBuilder: (BuildContext context, int index){
final feedItems = feed.items[index];
print("rssTitle>>> ${feedItems.title}");
return Container(
margin: EdgeInsets.only(left:13.0,right:13.0),
child: Center(
child: Card(
elevation: 1.0,
child: ListTile(
onTap: (){
openFeed(feedItems.link);
},
title: Text(feedItems.title,style:listTextStyle),
subtitle: Text(feedItems.pubDate,style: subCategoroyTextStyle,),
contentPadding: EdgeInsets.all(5.0),
trailing: Padding(
padding: EdgeInsets.only(top:15.0,bottom:15.0),
child: Icon(CustomIcons.next,size:20.0,),
)
),
),
),
);
}
):Container(
margin: EdgeInsets.only(top:(MediaQuery.of(context).size.height/2)-110),
child: Text(StringAssets.noData,
style: listTextStyle,
),
)
:Container(),
Visibility(
visible: isLoading,
child: Container(
//margin: EdgeInsets.only(top:(MediaQuery.of(context).size.height/2)-110),
child: Center(
child: CircularIndiacator()
),
),
)
],
),
);
}
}