Myujth

I encountered a problem when I picked up the http request List which continued to increase when I went to the tab page and returned to its original page (see picture for result).

then, after leaving another page and returning to the original

how to optimize this?

see my code below:

class HomeTabDetail extends StatefulWidget 
 final Fixture fixture;
 final FixtureModel model;

 HomeTabDetail(this.fixture, this.model);

 @override
 _HomeTabDetailState createState() => _HomeTabDetailState();


class _HomeTabDetailState extends State<HomeTabDetail>
 with SingleTickerProviderStateMixin 
 TabController controller;
 // BannerAd bannerAd;

 @override
 void initState() 
 super.initState();
 loadData();
 print('initstate called');
 controller = TabController(vsync: this, length: 4);
 // FirebaseAdMob.instance.initialize(appId: FirebaseAdMob.testAppId);
 // bannerAd = buildBanner()..load();
 

 @override
 void dispose() 
 // bannerAd?.dispose();
 controller.dispose();
 print('dispose called');
 super.dispose();
 

 static final targetingInfo = MobileAdTargetingInfo(
 keywords: <String>['flutterio', 'beautiful apps'],
 contentUrl: 'https://flutter.io',
 childDirected: false,
 testDevices: <String>, // Android emulators are considered test devices
 );

 BannerAd buildBanner() 
 return BannerAd(
 adUnitId: BannerAd.testAdUnitId,
 size: AdSize.smartBanner,
 targetingInfo: targetingInfo,
 listener: (MobileAdEvent event) 
 print("bannerAd event is $event");
 );
 

 Future loadData() async 
 await Future.wait([
 widget.model.fetchVenue(widget.fixture.venueId.toString()),
 widget.model.fetchCountry(widget.fixture.league.countryId.toString()),
 widget.model.fetchStandingTeams(widget.fixture.season.id.toString())
 ]);
 

 @override
 Widget build(BuildContext context) 
 // bannerAd.show();
 return Scaffold(
 backgroundColor: Colors.white,
 appBar: AppBar(
 title: Text('Info Pertandingan'),
 bottom: TabBar(
 controller: controller,
 tabs: <Widget>[
 Tab(text: 'RINCIAN'),
 Tab(text: 'MEDIA'),
 Tab(text: 'LINEUP'),
 Tab(text: 'KLASEMEN'),
 ],
 ),
 ),
 body: ScopedModelDescendant<FixtureModel>(
 builder: (context, child, model) 
 return TabBarView(
 controller: controller,
 children: <Widget>[
 DetailMatchTab(widget.fixture),
 MediaMatchTab(),
 LineupMatchTab(),
 KlasemenMatchTab()
 ],
 );
 ));
 

here fetchStandingTeams() method

Future<List<StandingTeams>> fetchStandingTeams(String seasonId) async 
 var response =
 await http.get(Constant.standingById + seasonId + Constant.apiToken);
 var responseBody = json.decode(response.body)['data'];

 for (var standingJson in responseBody) 
 print(standingJson);

 for (var data in standingJson['standings']['data']) 
 var standings = StandingTeams.fromJson(data);
 print(standings);
 addToStandingList(standings);
 
 

 _isLoadingVenue = false;
 notifyListeners();

 return _standingTeams;