Flutter notiftyListeners contuniously rebuilding - flutter

Question

This is my service function that communicate with the database
Future<News?> getNewsList(String token) async {
var url = Uri.tryParse('${baseUrl}get-news-list');
var response =
await http.post(url!, headers: {'Authorization': 'Bearer $token'});
if (response.statusCode == 200) {
var map = json.decode(response.body);
var list = News.fromJson(map);
print("map:${list.data![0]}");
return News.fromJson(map);
} else {
return News(message: null, status: false, data: null);
}
}
This my viewModel class I am using mvvm pattern
class NewsViewModel extends ChangeNotifier {
ApiOp api = ApiOp();
Future<List<NewsModel?>?> getNews() async {
String token ="token-here";
var map = await api.getNewsList(token);
List<NewsModel?>? list = map!.data;
print("object:${list![0]!.title}");
notifyListeners();
return list;
}
}
And here where I show the data on the view
Consumer<NewsViewModel?>(
builder: (context, value, child) => FutureBuilder<dynamic>(
future: value!.getNews(),
builder: (context, snapshot) {
List? list = snapshot.data;
print("list:$list");
return ListView.builder(
itemCount: 2,
itemBuilder: (context, index) {
return FirsatWidget(
title:"",
date: "",
photoUrl: "lib/assets/temp/4.jpg",
);
},
);
}),
),
But when I run the app some print function spamming in the debug like these prints
print("object:${list![0]!.title}");
print("map:${list.data![0]}");
Is this code continuously send post to the server or just rebuilding the consumer

Answer 1

Is this code continuously send post to the server or just rebuilding
the consumer
You are continuosly sending http reqests to your server.
You don't need to use Consumer<NewsViewModel?> and notifyListeners(); because you are using FutureBuilder which gets data from that future.
Try this code:
FutureBuilder<dynamic>(
future: Provider.of<NewsViewModel>(context,listen:false).getNews(),
builder: (context, snapshot) {
List? list = snapshot.data;
print("list:$list");
return ListView.builder(
itemCount: 2,
itemBuilder: (context, index) {
return FirsatWidget(
title:"",
date: "",
photoUrl: "lib/assets/temp/4.jpg",
);
},
);
}),
),
And comment notifyListeners()
class NewsViewModel extends ChangeNotifier {
ApiOp api = ApiOp();
Future<List<NewsModel?>?> getNews() async {
String token ="token-here";
var map = await api.getNewsList(token);
List<NewsModel?>? list = map!.data;
print("object:${list![0]!.title}");
// notifyListeners();
return list;
Let me know if you have issues and still have rebuilds.