Category "dart"

I want to calculate each number from the array in flutter

I have an array in the flutter final list = [1, 2, 3, 4, 5]; I want to loop through the array to calculate the sum of all the items in the array,how i can?

BlocListener confusion

I am trying to make an app using flutter blocs, but I am having troubles with the BlocListener not being called and I can't figure out what I'm doing wrong. Her

Define Extension function on GETx

I am trying to define an extension function on GetInterface as extension FindOrPut on GetInterface { S findOrPut<S>(S dependency,{String? tag}){ if(

Dart preview Flutter UI guides is not present in vscode?

I can't find the dart preview flutter UI Guides... I have installed flutter and dart extensions in vscode... Can anyone help?? my Flutter version 2.10.4 and Dar

How to convert a stream to another type without using map?

I've this code: Stream<int> get fooStream async* { barStream.listen((_) async* { int baz = await getBaz(); yield baz; // Does not work });

check weather the user readed data or not in flutter using firestore

I was developing the chat app in flutter using firestore, the users successfully chat one-to-one. but I also want to send the notification to the user that some

type 'Future<dynamic>' is not a subtype of type 'Map<DateTime, List<Event>>'

Hi I'm trying to convert a Future list into a LinkedHashMap and I'm having But I'm returning a Future Dynamic This is my class class Event { final String cal

How to Handle API response model class if object is not Available in some situation on Same API Flutter Dart

I need an Help for API response handling. I've created model class to convert API res. My issue is on Type the API response is changed for example if type = 'Ap

Flutter: Updating the more recent value while the user in viewing the page with streams

Am I thinking about this the right way? I created a function that takes in a value from firebase, value in seconds, and convert it into hours:minutes:seconds, t

Navigate to next question or item in quiz app in a flutter list

I am creating a quiz app in dart/flutter and I want to automatically navigate to the next question when an answer is selected. The questions and answers are in

How to create a countdown in Flutter and Firebase?

I'm using Flutter to build an online auction app with two types of auctions (live auctions and off-site auctions). If the seller selects live auctions when uplo

How do I darken one container in a GestureDetector when I have multiple buttons created with a Widget constructor in Flutter Dart

So I have a piece of code where I need to add multiple buttons to the same page. I am using a GestureDetector since I don't like the onPress animation for the a

Flutter can't install firebase onto macOS

I tried to install the firebase package for flutter. After running flutter pub add firebase_core It states "successfully installed". When I then try to import

Flutter[Android]: Not able to release App with Manage External Storage Permission

We need to allow users to store files in the external storage and for the same, we use MANAGE_EXTERNAL_STORAGE permission in our application. Ideally for the an

"Looking up a deactivated widget's ancestor is unsafe." with StatefullWidget

I can't find any answers for my problem. In the code below, everything was perfect if I use a "GestureDetector" with a "Image" instead the Dismissible with the

Uri parse does not parse

String baseUrl = "httpswwwmywebsiteit"; Uri primaUrl = Uri.parse(baseUrl); print(primaUrl); // returns httpswwwmywebsiteit Is this a valid uri? How can I

flutter on click download image from firebase

Here, when I add a new picture, it appears here and it can be opened to a full screen, but when I click I want to download the picture that I long pressed on to

Object changes in child class widget traverse back to parent class widget where it was initialized

I am working on cart item in Flutter application. Right now I am working on editing cart item. The structure of my code is such that each cart item is a Statefu

The named parameter 'child' isn't defined. - in container

I want to use "child" to create a row in a container, but unfortunatly I am getting this error: The named parameter 'child' isn't defined.:29 What I am doing w

Flutter list return Instance of

I get data from json but when try add data to list ant then print list get Instance of class User { final String name; User(this.name); } ................

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