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Questions tagged [flutter-state]

369 questions
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Flutter method reuses old list value

I just refactored a method slightly by removing some of the widget as another stateless widget named TransformableSSLVI (transformable saved searches list view item) I return the extracted TransformableSSLVI widget from a method…
L1ghtsp33D
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Flutter Firebase Authentication With Riverpod

By reading the documentation of riverpod I wanted to redo the example of the section "third party examples" the example is "firebase phone auth with riverpod" here is the link:https://docs-v2.riverpod.dev/docs/getting_started ; and the github…
Jordan ONGOLO SINDE
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my question is not updating even after changing the index to that question

what i want in this code is that the questions to change to the next one in the map whenever the user presses any of the true of false buttons, but the question is not updating even after changing the index and using setstate. I don't know what is…
Ahmad Maaz
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Can't use a setState call in the onchanged callback in flutter

I am trying to map a TextFormFields value to a state variable in flutter class _PageState extends State { String _tag = ''; // this is the state variable @override Widget build(BuildContext context) { final _formKey =…
Shobi
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Update the page using FutureBuilder() + GetBuilder()

Is there a way to update the state when I use both Getbuilder() + FutureBuilder() I have list of users in firebase document, I display these users using Futurebuilder I want when i click on any user, that user get deleted I managed to delete the…
BlaCK _ WolF
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Why is my SimpleMap widget not accessing my _countrycode variable?

I'm trying to use the country code variable that I declared and stat updated into my Text Field but somehow when I try using it in my Simple map Widget it says that the named parameter isn't defined. Can someone explaine me what I'm doing wrong…
Coca95
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How to use Multiple providers nested inside three custom classes?

I'm seeking some help to overcome some difficulties to understand how to properly use provider as state management. I have three custom classes StationModel, SlideModel and ProductModel nested inside each other, like a Russian doll. All of them…
Francesco Limoni
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When to use Consumer & when to use context.watch to access the provider values?

Recently I discovered that we can access the provider value using either Consumer(build: (context, value, child){ return Widget(child: value.valueName), }, ) Or using context.watch().valueName What is the best practice?
kartik
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setState in showModalBottomSheet using TimePicker

I am having a problem. When I am showing my showModalBottomSheet I have a GeestureDetector on a Container, when pressed the TimePicker pops up and I can select a time. I take that value and set the state on a String that holds the new time value.…
Alexander Rogsberg
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How to properly modularize flutter pages

I am new to flutter so I am trying to understand how to properly make my code more modular. I have a page with buttons on it, and am trying to change the color of the buttons when they are pressed. When I have the buttons coded directly into the…
dstoner
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File_picker in stateless bloc widget

How do you go about using file_picker package in flutter and bloc management? https://pub.dev/packages/file_picker I have following code: class NewAuction extends StatelessWidget { late final FilePickerResult? filePickerResults; final…
muismat333
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Flutter UI not changing after updating FutureBuilder ListView?

I have two screens, the HomePage and the Add screen. The app starts on the HomePage and has a Floating Action Button and a FutureBuilder. On clicking the FAB button, it goes to the Add screen, in which I can add details for another entry. On…
Laxman Prasad
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Accessing state in widget and making class immutable

I need to expose a couple of functions of a Stateful Widget. Since these functions depend on the state of the widget, I created a variable to store the state. However, I am getting a compile time warning: This class (or a class that this class…
Tushar
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Toggle switch animation not working in flutter

`I am trying to implement a toggle switch in which when I toggle the switch I display two different things but I'm getting an error while I use setstate with my logic or something like that if I remove the setstate from my code the animation starts…
Ahmad Maaz
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Can I trigger grandparent state changes without an external state management library?

I cannot find a satisfactory way for a grandchild widget to trigger a grandparent state change. My app saves and sources its data all from an on-device database. Ive tried to proceed this far without using a state management library as I thought…
tommytucker7182
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