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Questions tagged [flutter-state]

369 questions
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Flutter UI only changes if i manualy refresh the page

I have two forms in a tab bar. I'm using Getx for state management. All fields in those forms listen to a .obs variable. The forms fields are updating to the variable changes. How ever one field only reflect changes when that page is revisited. I'm…
Febin Johnson
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Why parent widget setState disables child widget setState in flutter?

I try to create a date picker for my flutter app. At first i can choose the day i want and the color of selected day will change. The problem is when i change the month or year in drop down button, I can't change selected day. Actually all things…
sina hamidian
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Flutter problem with TypeErrorImpl was thrown building

Hello everyone I am using the Get.to(Page()) and when I navigate to the page I get the following error and I don't understand why: Error: ======== Exception caught by widgets library ======================================================= The…
Alex97
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Flutter GetX Obx do not update UI

I have a screen that I'd put all body in an Obx , I have a widget that has a parameter named activeIndex like this AnimatedSmoothIndicator( activeIndex: homeController.carouselPage.value, count: homeController.posts[index].images.length, …
mm sh
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API data from provider seems to get lost during Navigation

I am a beginner level Flutter developer trying to resolve the issue with the Navigation stack. In the existing app: When user logs in to the app, login api call is shooted Homescreen is rendered with Navigator.popUntill method All the APIs in the…
Gaurangi
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What is GetX Controller?

I am new with getX and I don't understand what is the purpose of GetX Controller. Based on my understanding, It basically hold variables and this is where everything changes inside the state. Can someone explain further
Harris Shah
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How can I call setState() safely after returning a value from a dialog in Flutter?

Here is the problem: I have a list of items displayed in a list view. I can edit these items with the dialogs displayed by clicking on them. After editing and closing the dialog, I also need to update the items on the list view. I'm currently doing…
rasitayaz
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Data not updating with Provider, Flutter

After the user changes the data, the UI doesn't update the data with Provider. The API calls are always statusCode: 200 but the UI is not updating unless I refresh/build the page again. I assume that the setting state method is not set up correctly…
GrandMagus
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Flutter sync state between 2 instances of the same widget on different pages

I have a question about my use case: assume we are currently on screen A which shows an instance of my chart-widget (amongst other things). I want to give the user the opportunity to show that chart on the full app-screen by allowing to tap on a…
WieFel
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Not able to show multiple timer in flutter

I am creating a Chat Polling feature and in chat polling I am showing timer for every new poll. Everything is working fine for the first poll but when I create a 2nd poll form backend new poll is creatine good with new question but the first poll…
Lokik Soni
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change value onTap

I have 2 Inkwells that are controllers of a pageView, when I press on either is switches to a corresponding page. Padding( padding: const EdgeInsetsDirectional.fromSTEB(0, 12, 1, 0), …
Adrian Dworak
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Flutter: In RiverPod , how to alter state model's variables directly?

I am currently learning River Pod and also new to flutter. When setting new state in StateNotifer , I need to create a new model and replace the state But directly changing is not working class CounterModel { CounterModel(this.count, this.age); …
RagAnt
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Flutter/Dart FutureBuilder - How to store a snapshot.data in a variable and pass the value to other widget?

I'm new to Flutter, and I can't achieve display the snapshot.data value in a widget outside from futureBuilder scope, It's possible to do this? if not, what is the better way to do this? //... var result = '0.00'; Row(children: [ const…
JOTARM
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Getx fetch changes of variables

I have a getx Controller. In it i have declared two variables, which will be updated var percentageEVS = 0.obs; var percentOthers =0.obs; Im trying to change the values of these variables using the following function calculatespentTime(){ …
Febin Johnson
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How to Sort, Filter, Search the data which I get from REST API (JSON Form) and Update the UI immediately using State Management Like BLOC or PROVIDER?

This is the data from the API: { "httpStatus": "OK", "httpStatusCode": 200, "success": true, "message": "Successfully fetched all agents.", "apiName": "Get all agents.", "data": [ { "id": 1 "prod_name": "Apple" …
Sai
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