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Questions tagged [flutter-state]

369 questions
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list view not refreshing in flutter

I am using two bottomnavigationbar item where two tabs for alltodos and completedtodos here as a demo purpose I have placed a refresh button on AppBar to load data and used setState to rebuild but it does not rebuild list view , therefor to see…
Irfan Ganatra
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There is a problem that is rebuild when I click TextField() in Flutter

My code includes FutureBuilder(), which get data from Firestore, and its child widgets include GridView.builder and TextField widgets etc. When I click on a TexField(focus), the codes in FutureBuilder are rebuild. The following is the test code for…
Kevin Yang
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update a variable of stateful class from another class in flutter

I'm quite new to flutter and dart. as an exercise I'm trying to create a Coffeeshop application user interface. here I want to update an integer variable in a StatefulWidget from an other StatefulWidget. I've tried the setState((){}) but It seems…
Eric Matevosian
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Flutter setstate method doesn't add my numbers

I built custom app for training. I created buttons with gesture detector and i assigned number to them and i created global variable "score". I want buttons to add their numbers to "score" variable and i want to show the variable in a container but…
hasannn2666
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Flutter stateful widget doesn't change container's color on condition?

In my app I generate a random number between 1-10 and i try to guess. I use container and text and gesture detector for it. I want containers to change color if i click on the right number which i generated randomly. But I don't know why i does not…
hasannn2666
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Flutter -Widget Text, not updating when value change even with SetState

I have created a container. His child is a text. When I tap on the container/text, it display a modal and a Picker. Then, the user can select a value. Press the confirm button and my text widget should change to display the value selected by the…
Laurent Thomas
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DropdownButton within showModalBottomSheet doesn't reflect value change

I'm trying to add a dropdown list, depending, for Android I'm using DropdownButton, for iOS a CupertinoPicker: Platform.isAndroid ? AndroidSelect( items: ([0] + priceOptions), value: minPrice, zeroValue: 'no min', onChanged: (int?…
hansaplast
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How to re-build Page A when a button is pressed in Page B?

I'm working with IndexedStack in order not to rebuild each page while using BottomNavigationBar // MAIN.DART class LoggedHandle extends StatefulWidget { const LoggedHandle({Key? key}) : super(key: key); @override State…
faccio
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Cubit - listener does not catching the first state transition

I'm using a Cubit in my app and I'm struggling to understand one behavior. I have a list of products and when I open the product detail screen I want to have a "blank" screen with a loading indicator until receiving the data to populate the layout,…
JACF
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How to use any state management for my bluetooth app?

I am trying to use a connected bluetooth device on other pages, but I'm unable to do that. I tried to use the provider, but that did not work, parameter passing did not work either. After testing, I am using the following I made a class…
Mubashar Ali
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Get the value of an integer from a stateful widget from another class in flutter

Learning Flutter and I am building a counter that I would like to use for a cart. I have a problem retrieving the integer value of the counter stateful widget I created and i'd like a Text to update itself with the value of the Counter. Here is the…
thearach
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Best practices to change app state from a package

I'm developing a standalone package which is currently inside an app like this: app/packages/my_package I created the package with the create command package template. What I'd like to achieve is to trigger state changes in the app from package…
holparb
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Flutter Counter Application using Bloc Pattern v8.0.1 [The operator '+' isn't defined for the type 'CounterState'. Try defining the operator '+']

I'm new to the flutter_bloc state management and I have a problem in the bloc class and state class. The operator '+' isn't defined for the type 'CounterState'. Try defining the operator '+'. I follow Felix Angelov's instructions here in [Proposal]…
Miguel Rosal
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Flutter progress indicator with slow async method

when i try to use CircularProgressIndicator with slow async method, indicator is not shown. When i replace slow custom method with Timer.pereodic() that works fine. I am new in Flutter and do not understand what i am doing wrong class…
ohlushenok
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Flutter change state on all list item

Hey I am a newbie in flutter, I am trying to build an interview radio app The issue I am facing is when changing state on switching music from one station to another, the "playing" and icon still don't change for the previously clicked object, but…
Kavi Harjani
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