flutter-web

问题 I want to create a website using flutter web but I'm unable to navigate to sections in the same page. Here's an example of what I want to achieve using flutter. P.S. Navigator is not working: 回答1: I created an example with PageView class MyHomePage extends StatelessWidget { var list = ["Home","Services", "Work", "About"]; var colors = [Colors.orange, Colors.blue, Colors.red, Colors.green]; PageController controller = PageController(); @override Widget build(BuildContext context) { return

问题 so i got the error below after upgrading flutter on master, building for web. Apart from upgrading flutter I didn't change anything. Switching branches and upgrading flutter again did not seem to work, as well as flutter clean and pub upgrade/ packages get. [+5273 ms] ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════ [ +318 ms] The following assertion was thrown building InputDecorator(decoration: InputDecoration(hintMaxLines: [ +104 ms] "1",

问题 I am trying to make an http requset to 000webhost as below in my flutter web app. The first method is the same as the second,I only changed the url. However the first one works but the second does not work. someone suggested to add more headers but I have no idea which headers to add. /// This method WORKS getMethod()async{ print("IN GET ...."); String theUrl = 'https://jsonplaceholder.typicode.com/todos'; var res = await http.Client().get(Uri.encodeFull(theUrl),headers: {"Accept":

问题 I am trying to make an http requset to 000webhost as below in my flutter web app. The first method is the same as the second,I only changed the url. However the first one works but the second does not work. someone suggested to add more headers but I have no idea which headers to add. /// This method WORKS getMethod()async{ print("IN GET ...."); String theUrl = 'https://jsonplaceholder.typicode.com/todos'; var res = await http.Client().get(Uri.encodeFull(theUrl),headers: {"Accept":

问题 I'm trying to start a new Flutter project in Intellij as well as Vs code. Intellij there is no option provided to add a new flutter web project in Dart templates. Vs code whenever I select New flutter Web Project after accepting the stagehand it asks for the Dart template which is why I'm stuck.?? Please help soon?? 回答1: Since flutter 1.9 flutter_web is merged inside flutter, Follow the below steps to create and run your first flutter web App through IntelliJ IDEA. Create a new flutter

问题 I have bottom navigation bar that switches between two screens BookingsScreen and OpeningTimesScreen . My problem is that OpeningTimesScreen UI doesn't load properly the first time. It does load if tap on its icon again or if I select BookingsScreen first and then select it. As the full UI is quite crowded with 28 textfields and 14 switches, I just reduced it to only one textfield and did some tests. It seems that the problem is with textfield declared inside a ternary, thing that I do as the

问题 Im using Firebase plugin for web and managed to work with firestore and authentication. Now, Im trying to enable firebase storage but when i instanciate Storage gives me this error tried to call a non-function, such as null: 'dart.global.firebase.storage for firestore and authentication I use : import 'package:firebase/firebase.dart' as fb; import 'package:firebase/firestore.dart'; fb.Auth _firebaseAuth = fb.auth(); Firestore _firestore =fb.firestore(); for Storage : fb.Storage storage = fb

问题 when I use the dart: io library on the flutter web, a warning appears when debugging .like that [WARNING]build_web_compilers:entrypoint on web/main.dart: Skipping compiling retgoo_internal|web/main.dart with ddc because some of its transitive libraries have sdk dependencies that not supported on this platform: retgoo_internal|lib/protocol/http_aiframework.dart but when I use import 'package: flutter_web / io.dart'; there is an error code, in code .transform here is the http_aiframework.dart

问题 After trying plugins that were designed to make this easier. I tried to make my own, however, I am unable to ascertain a way to do this without causing breakages or multiple listeners to become active. Goal: 1) User types it. Above 0 length, it will show the data (after briefly saying Loading..) 2) Once user clicks their selection on Overlay, it uses that data and puts that into the textField 3) User can begin typing again, or remove current data and process can repeat Bugs: 1) Overlay

问题 I'm using Flutter to develop a Web App. I'm working on my app for few days now, and everything was OK, but since this morning I always get this warning at the moment I run the app: "A null value was passed into a non-nullable parameter value This will become a failure when runtime null safety is enabled." Nothing wrong really happens until I change RANDOM stuff in my code, doesn't really matter what it is. Then this error shows up: Error: Invalid argument(s): Extension already registered: ext