Before every video I am getting a black screen which I am not sure why is it appearing. At first I thought it is due to the internet connection or something but that does not seem to be affecting it at all. I am getting video urls from the...

Dart

Flutter

DART2 Prima Plus - Tutorial 1

9 Jul 2018 by ThatsAlok

This is getting started beginner tutorial in DART 2, I would be touching Basic setup, Datatypes, Conditional Statements and Loops.

Dart

Windows

Dev

DART2 Prima Plus - Tutorial 2 - LIST

9 Jul 2018 by ThatsAlok

In this second article of series, I would be focusing completely on List working

DART2 Prima Plus - Tutorial 3 - MAP

14 Jul 2018 by ThatsAlok

Map class denotes a key and value container. I will showcase its various methods and properties.

DART2 Prima Plus - Tutorial 4 - OOPS

31 Jul 2018 by ThatsAlok

Object Oriented Programming in DART

Double-Dartris

24 Apr 2014 by Fredrik Bornander

Implementing a Tetris-like game for the web using Dart

Failure [INSTALL_FAILED_CONTAINER_ERROR: failed to extract native libraries, res=-18] error launching application on SDK gphone64 arm64

21 Jan 2024 by Richard MacCutchan

Se https://stackoverflow.com/questions/77663954/flutter-failed-to-extract-native-libraries-res-18[^]

Dart

Flutter

Failure [INSTALL_FAILED_CONTAINER_ERROR: failed to extract native libraries, res=-18] error launching application on SDK gphone64 arm64

20 Jan 2024 by Kavya Bhargava

I am receiving this error: Error: ADB exited with exit code 1 Performing Streamed Install adb: failed to install /Users/XXX/FlutterDev/XXX_app/build/app/outputs/flutter-apk/app-debug.apk: Failure [INSTALL_FAILED_CONTAINER_ERROR: Failed to...

Dart

Flutter

Firebase messaging not working [not receiving notfications] but app connected to firebase

4 Mar 2022 by Kavya Bhargava

I was following a tutorial for Firebase push notifications. I followed all the steps: Connecting app to Firebase, and importing packages (Firebase messaging and Firebase push notifications). I tried sending several notifications, but it did not...

Dart

cloud

Flutter

Firebase realtime database onvalue event don't work

14 Apr 2024 by gacar

I have firebase realtime database. When I manually change data on the Firebase console, vscode stops responding and throws the following error. Error: TypeError: Instance of '_Exception': type '_Exception' is not a subtype of type...

Dart

Flutter

Flutter : onpressed for imagepicker function not working

29 Jan 2022 by Kavya Bhargava

I built an image picker after learning in a course. I am not getting any errors in the debug console or in the build. I am trying to click it but it is not working. I made another image picker in a similar manner in same app but that did not gave...

Dart

Flutter

Flutter : the earnings screen in my driver app in flutter does not change the state of it in realtime using firebase

26 Jan 2022 by Member 15514073

My app screen does not change the state of it in real-time while updated in the firebase real-time database .. the earnings screen is updated after the driver ends the trip and collects the fares of the trip then updated total earnings and number...

Flutter chewie video player stuck on loading forever

1 Mar 2024 by Member 14933789

Hey, codeproject wonderful community! I am trying to implement the Chewie Flutter package into my app as a custom widget and I got everything down and made it as customizable as possible. It complies well, but when I run it on the web, android,...

Dart

Flutter

video

Flutter cloud firestore. Sorting by the number of elements in the collection

4 Aug 2022 by ROCKSTAR 2022

I am building a history app. When a person has viewed a story, the ID of the user who viewed that story is written to that story's database in the Readers collection. There is also a list with all the stories. And I want to sort these stories by...

Dart

Flutter

Flutter cloud firestore. Sorting by the number of elements in the collection

4 Aug 2022 by OriginalGriff

While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for...

Dart

Flutter

Flutter Getting Started: Tutorial 1 Basics

4 Jul 2018 by ThatsAlok

In this tutorial, I will provide step by step to build your first Flutter App

Flutter Getting Started: Tutorial 2 - StateFulWidget

9 Jul 2018 by ThatsAlok

Let's explore the world of StateFulWidget with respect to Flutter

Flutter Getting Started: Tutorial 3 Navigation

12 Jul 2018 by ThatsAlok

Flutter Navigation, Let's move among pages

Flutter Getting Started: Tutorial 4 ListView

18 Jul 2018 by ThatsAlok

Flutter ListView: A scrollable control for everyday need

Flutter Getting Started: Tutorial 5 Grid

21 Jul 2018 by ThatsAlok

Let's explore Flutter Grid view and MediaQuery

Flutter listview builder change the color of the button

19 Oct 2021 by Ghali Skalli

I'm making an movie lister app. I made my app like that: 1. The main.dart who run the project and contain all Tmdb (The Movie DataBase) process 2. The root_page.dart who contain all the "immovable" elements (app bar, bottom navigation bar, page...

Dart

Android

Flutter

Flutter not detecting changes on global variable from different function

8 Mar 2023 by Richard MacCutchan

This is the same issue as your previous question at Type 'null' is not a subtype of type 'string' while trying to retrieve data from list into listview[^]. You need to look at the code at ... var custUsernameGet = await...

Dart

Flutter

Flutter not detecting changes on global variable from different function

8 Mar 2023 by Dan Sep2022

I have a function that will retrieve username from database and that username value will be stored in global string variable, everything works, and my goal is to display that username variable on the AppBar text but I keeps getting "Null is not a...

Dart

Flutter

Flutter not retrieving variable new value while calling in another class

14 Feb 2023 by Dan Sep2022

I have this StatefulWidget that supposed to retrieve data from MySQL database based on condition and add those retrieved values into an array so I can use the array values to be display on ListView. My Problem is that sometimes when the array...

Dart

MySQL

Flutter

Flutter search bar implement?

22 Dec 2021 by Member 10907325

Hello i am loading json from local assets file and show in listview in my flutter app anyone know how to implement searchbar here is my code body: Container( child: Center( // Use future builder and...

Dart

Flutter

Flutter search bar implement?

22 Dec 2021 by Richard MacCutchan

Quote: i tried to search on google but no result found What did you search for? Look at this: flutter search bar example - Google Search[^].

Dart

Flutter

Flutter: how to navigate to specific home page based on the type of user?

23 Mar 2022 by Fazaamajd Fazaa

i have three types of user in my application (nurse,substitute, patient), every type will have access to specific home page. every type of user have his homepage and his specific features. so i want to implement some logic in my code to resolve...

Dart

Flutter

API

Flutter: how to navigate to specific home page based on the type of user?

9 Jul 2022 by Mathis 2022

Conceptionally I would make a LoadingWidget where you execute the async Function to get the bool is. Then in the async Function: if (is) Navigator.push(MaterialPageRoute...); else if (is)...

Dart

Flutter

API

Flutter:- how to implement flood-fill algorithms

17 Oct 2018 by Rajesh aptil

I am working on one Paint application wherein I am implementing BucketFill functionality similar to MS paint application. I have Coded it Using a couple of FloodFill Algorithms but the Filling Color Process is taking too much Time ...I am not pretty sure reasons behind it may happen due to the...

Dart

Android

Flutter

Game development using Dart

4 Apr 2014 by Fredrik Bornander

How to implement a simple HTML5 game using Dart.

Getting outofmemory error

9 May 2022 by Kavya Bhargava

I am using a video player to play the videos I get from my streambuilder. I am unable to place my dispose function in such a way that I don't get this error. Error is causing the emulator to crash after certain point. My screen where I am...

Dart

Flutter

Got error bool flutter

15 Mar 2023 by Alva Rizky

On this code, i try to create Delete features, which is can delete history/data that already added. Here's the code : menuOption(String value, History history) async { if (value == 'update') { Get.to(() => UpdateHistoryPage( ...

Dart

Flutter

Got error bool flutter

15 Mar 2023 by OriginalGriff

Thee error message is pretty explicit: the function returns a nullable value - bool? - and you are trying to store it in a non-nullable type - bool; the types are not the same. The simplest solutions are to change the type of yes to bool?, or...

Dart

Flutter

Having problems with configuring mobile apps for duende identity server

24 Nov 2023 by Trần Toàn from Hanoi

I am encountering difficulties with my Duende Identity Server implementation. The server successfully provides tokens to a WPF Desktop client, but I'm facing issues when trying to obtain an access token from the server using a mobile app. I...

Dart

identity-server

Flutter

Having problems with configuring mobile apps for duende identity server

24 Nov 2023 by Graeme_Grant

For Identity, cookies are okay for non-mobile applications. For mobile, you will need to use Bearer tokens.

Dart

identity-server

Flutter

How can a value be assigned to a variable of an extended class?

3 Mar 2024 by gacar

Hello, I want set a value of extended class. How can i do it? Thanks. class A { String? value1A; A({ this.value1A, }); } class B extends A { String value1B = ""; value1A= ""; //

Dart

Flutter

How can a value be assigned to a variable of an extended class?

3 Mar 2024 by M-Badger

The issue with your code is that you're trying to assign a value to value1A directly in the class body of B. In Dart, you can’t assign values to inherited variables directly in the class body. You should do this inside a method or constructor. ...

Dart

Flutter

How can I get data in the form of a list in flutter ? can you help me please?

24 Jun 2021 by Rabia Başıbüyük

How can I pull data from a Flutter Firebase real-time database in the form of a list?can you help me please? What I have tried: I tried FutureBuilder to extract data from flutter firebase realtime database in the form of a list, but it gave an...

Dart

How can I get data in the form of a list in flutter ? can you help me please?

24 Jun 2021 by Richard MacCutchan

See Add Firebase to your Flutter app[^]

Dart

How can I get icon from Google icons by code point?

9 Mar 2024 by gacar

I want use a google fonts icon. I have Code point (e88e, info icon). But i cannot get right icon. How can i get icon from google icons by Code point? Thanks. This is icon link: Material Symbols and Icons - Google Fonts[^] import...

Dart

Flutter

How can I get icon from Google icons by code point?

10 Mar 2024 by Andre Oosthuizen

Quote: Thanks for your response. I asked this question in more detail on stackoverflow. Unfortunately I will not be visiting StackOverflow to view your question, I doubt i if anyone else would. Please give full detail here by using the Improve...

Dart

Flutter

How can I make a barcode for a football match ticket

16 Mar 2022 by Mohamed Reda 2022

.................................

Dart

Flutter

barcode

How can I make a barcode for a football match ticket

16 Mar 2022 by OriginalGriff

Quote: What I have tried: Nothing While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades...

Dart

Flutter

barcode

How can I make a barcode for a football match ticket

16 Mar 2022 by Patrice T

Quote: Nothing Time to kick your brain, all things do not comes all cooked. The job of programming is also CREATING SOLUTIONS. For the barcode, you have to ask yourself some questions and answer them. The answers will tell you what to do. 'Why a...

Dart

Flutter

barcode

How can I solve " source file not found" problem?

8 May 2021 by Md. Mubin

I am trying to call a native C function from Dart. I have made my C files, CMakeLists.txt and required Dart file. but when I run my code it shows: Execution failed for task ':flutter_plugin3:generateJsonModelDebug'. >...

Dart

Flutter

How can I solve FAILURE: build failed with an exception. In android studio 4.1.3?

27 Mar 2021 by Salma Mohamed 2021

I am trying to run the default Flutter program and I get the following error. FAILURE: Build failed with an exception. * What went wrong: Unable to start the daemon process. This problem might be caused by incorrect configuration of the...

Dart

Flutter

How can I use method from instance class with new class name?

14 Feb 2024 by gacar

Hello, I'm new to Flutter/Dart. When I take an instance of a class and try to use a method in it, I getting below error.How can i use method from instance class with new class name? Thanks. "The instance member 'newData' can't be accessed in an...

Dart

How can I use method from instance class with new class name?

14 Feb 2024 by gacar

I found solution on flutter/dart discord channel. I should have marked the method of the new class as "late". I marked late then working now. class Data { String read() { return ""; } } class Data2 { var newData= Data(); //...

Dart

How can write if condition in widget property?

28 Jan 2024 by gacar

I want to use if condition in the icon widget, but Dart gives an error. How should it be used correctly? Thanks. class Cell extends StatelessWidget { const Cell({super.key, this.caseTrend = false}); final bool caseTrend; @override ...

Dart

Flutter

How can write if condition in widget property?

28 Jan 2024 by M Imran Ansari

Unfortunately, you can’t write if statement directly inside your widget properties as if you were writing in your method or function. But there are a few ways you can write a conditional statement inside your widget. You can use the ternary...

Dart

Flutter

How do I integrate the gazecloudapi.js in a flutter project?

26 Dec 2021 by Rafia Chowdhury

This is the instruction provided by them for a website: Include JavaScript 1. Start eye tracking GazeCloudAPI.StartEyeTracking() ; 2. Define your...

How to connect to mongodb atlas from flutter

8 Jun 2021 by Asif Rehman

Db db = new Db("mongodb://localhost:27017/whatever"); In C# I can connect using mongodb+srv://:@cluster0.k6lme.mongodb.net/myFirstDatabase?retryWrites=true&w=majority But in flutter mongo_dart package. Connection string ...

Dart

Flutter

How to Debug the Design Time Errors in WPF XAML File?

20 Oct 2015 by Manish Dubeyy

How to debug the design time errors in WPF XAML file?

How to display the countdown time for all users

26 May 2020 by Member 14845028

I am building a flutter auction application, I am stuck at the countdown time of an auction product so I use firebase realtime database. I have to make sure all users see the countdown at the same time. Please help me whether it's just a keyword...