Category "flutter"

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 post image to my server from Flutter?

I have a small server based on node JS, which communicates with Post Gre SQL database, and server is working on port 5000. I have route called uploadImage, whic

Flutter redux combined state dispatch action and update UI issue

I am learning redux. I have the following issues: My initial state does not seem to be taken into the account My actions are dispatched but they are not updatin

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

Align children with first child in Column

How can I align my widget to take the same width as ClipRect image? Right now it overflows in my screen. Find attached how it is and how I desire my output woul

flutter app - trending posts by using google analytics data api

In my app, users create posts and I'd like to show trending posts by the number of views, comments, etc in a specific date range. To do that I thought I can cre

What's the use case of TableCell?

I can show widgets as children of TableRow. They are displayed correctly. What's the use case of TableCell in flutter? TableRow(children: [ widget1,

Error: Method 'addPostFrameCallback' cannot be called on 'SchedulerBinding?'

how can I fix this error in flutter with android studio /C:/src/flutterSDK/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.6.3/lib/get_navigation/src/snackbar/

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

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

My first Android app was going great until I tried getting it signed

I've been developing using Flutter/Dart in Android Studio since December and want to finally open it up to others for internal testing. Whenever I upload my app

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

Flutter: when swipe - background hang off?

I have got a app with a tabbar and when I swipe from one tap to another, the background is hanging. On page two is the background the UI from page one??? I wrap

Testflight app review - probleme with two-factor authentication

I submitted my IOS app to TestFlight beta testing.. The application requires login with apple id account. but the review team rejected the version with reason:

How to split string from a QR Code and inserting them into a login and password text form field

I'm trying to create a scanner that can insert string from a QR code. I've been researching to no avail. I managed to create a simple scanner that can setstate

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