Category "dart"

Make child elements active

I have a code that can be used to filter cars by country of manufacture. The code is structured like this: I put the name of the country with a checkbox in the

Android Studio shortcut keys for windows, linux and mac

Android Studio shortcut key for Windows, Linux and Mac. For example in windows: Run -> Shift + F10 Debug -> Shift + F9 Any others similar to this? What ar

How to retrieve the value of a listener passed to a Stream?

Stream<int> get ints async* { yield 100; } Future<int> foo(int i) async { print(i); return 0; } void main() { final subscription = int

Call AppLocalizations’ method through regex

I’m trying to build an ItemList in flutter that would call the AppLocalizations.of(context) with the methods value01, value02, value03. Example of arbFile

I want to be able to have multiple widgets in a page, it isn't working though. I want to have containers like the image below. It only allows me text?

This is the code below, please much appreciated if you can at least try. thank you | I am trying to create an app where I can have multiple widgets in one page.

Flutter Amplify - Cannot run appsync code gen for existing api

I have an existing AppSync API that I need to use in a new flutter app. After initializing amplify in my project, i run the command "amplify add codegen --apiI

Flutter null safety plugin_platform_interface

I have this error, Error: Cannot run with sound null safety, because the following dependencies don't support null safety: - package:plugin_platform_interface

Allowing null and asserting it's not - flutter framework

I came across this file https://github.com/flutter/flutter/blob/master/packages/flutter/lib/src/widgets/widget_span.dart and on line 98, I find this strange tha

Automatically upgrade a dart package

I have a package on github and it is been used in two of my projects, but every time I make a change to the package I have to run flutter pub upgrade on both pr

Firebase Realtime database filter by child list content

I have the following Firebase Realtime database products data { "-N1OHKTcbZ1h1kJQYSW-": { "images": [ "image1", "image11" ], "name": "

I am trying to run my flutter app and I am getting these errors?

here is the error message The current Dart SDK version is 2.13.4. Because test >=1.16.0-nullsafety <1.16.0-nullsafety.8 requires SDK version >=2.10.0-0

How to navigate to new page using flutter?

I want to click each navigation item and direct it to another activity. I actually want to show the list view of 'now playing movie'. When I click that drawer i

How to set a text from parsed json variable in Flutter

I have a problem with parsed JSON in Flutter-Dart. Actually, there is no problem, but there is a method which I don't know. I'm getting data from a PHP server a

Empty Body HTTP Post request Flutter

I am trying to send a Post request but the body of the request is meant to be empty and I have tried the endpoint on postman with an empty body and it works. Bu

Set and get Image in objectbox

I want to set and get image from local storage, but I have no idea how to do this.

LateInitializationError: Field '_instance@141084504' has not been initialized

When using getX and Flutter I get following error: LateInitializationError: Field '_instance@141084504' has not been initialized This is the code: import 'dart:

Argument type 'String?' cannot be assigned to parameter type 'String', Triggering Dart's Null Safety either way

In this current snippet I have declared notification to be nullable but get an null safe error for the if loop's notification.body and notification.title. Here'

Can't watch object instance with Riverpod

In a Flutter web project, I'm having this issue with Riverpod: Consumer( builder: (context, watch, child) { final om=watch(human); return Text(om.na

How to use the data from different model and context?

I made the small app, and designed like this: return MultiProvider( providers: [ ChangeNotifierProvider(create: (context) => AModel()),

The argument type 'OrderItem' can't be assigned to the parameter type 'OrderItem'

I am unable to assign my one class to another even though I have imported the lib for them. I am following a course . In this I will fetch the orders from fireb