Category "dart"

Multiple Dependent dropdown in flutter

I am trying to build multiple dependent dropdown on flutter. The second one depend on 1st one. here is the code to the dropdown I have implemented. Container(

How to add a name to a chart on flutter, x- and y-axis?

I have been working with the online gallery of Flutter charts (https://google.github.io/charts/flutter/gallery.html) but I'm struggling to add a title for x &am

how can i use more than one tflite flutter model?

i created one tflite model. i want to pass string to model and label according to user selection. for example, if your select model1 it will load model two, if

How to specify a TimeZone when creating a DateTime object in Dart/Flutter?

Dart?flutter does not appear to allow a timezone (eg: "Australia/Sydney" or "America/Detroit") to be specified when creating a DateTime object. Either the local

Flutter Scaffold Appbar not showing the back button

My class is not showing the back button in the AppBar, Already try put this.automaticallyImplyLeading = true, import 'package:carros/pages/carro/carro.dart';

Call async function from Isolate function

I am trying to call an async function from the Isolate function. class IsolateExample { final ReceivePort port = new ReceivePort(); IsolateExample(){

Widget rebuild after TextField selection Flutter

I'm developping a Flutter App that needed to have a form. So when the user open the app, a Splash Screen appear before the form that have the following code :

Access properties of a flutter class through the content of a variable

I'm in Flutter (Dart), I want to access to a property of a class, but the property that I have to access is defined by the content of another variable. Example:

How do I change Text Input Action Button (return/enter key) on Keyboard in Flutter?

In Android and iOS it is possible to change the enter/return key of the keyboard to e.g. a "Go" button (and other options). On top, we can see the regular "

Add Key for list of multiple object ~ dart

final uri = Uri.parse( "https://api.binance.com/api/v3/klines?symbol=BTCUSDT&interval=1h"); final res = await http.get(uri); var data = (

How to solve exception caught by widgets library?

I want to use cached network image to display images in my flutter app, however it shows this: ═══════ Exception caugh

Network requests in Flutter app on physical iOS devices are slow

I am working on a cross-platform app using Flutter, for Android, iOS and Web. For some reason though, network requests on iOS are very slow. The app works fine

Flutter iOS fatal error: 'Flutter/Flutter.h' file not found

When I try to build my iOS I was facing such error I think it's mostly with the webview_flutter package Failed to build iOS app Error output from Xcode build:

How to load images with image.file

I can't seem to simply load an image from the hard drive to the screen. Image.network seems straightforward. But I can't figure out how to use Image or Image.

Flutter build apk on release mode cannot generate updated version

I had run this flutter build apk to release my App. Now I had built version 2 of that. Now, I want to release my version 2 App. So, I run flutter build apk aga

How to design Filters in Flutter?

I am new to flutter and I wonder how to develop filters in flutter something like this (screenshot taken from google images), so I just want to know how to do f

Detect when we moved back to previous page in Flutter

We moved from Page1 to Page2 but now from Page2 we move back again to Page1 like this: Navigator.of(context).pop(); How can we detect on Page1 that we went ba

How to make flutter app responsive according to different screen size?

I am facing difficulties to make it responsive according to various screen sizes. How to make it responsive? @override Widget build(BuildContext context)

I want to show data change dynamically but its does not work

I am trying to show the product offer time left by using the difference between DateTime Now and the deadline date which is come from API, Here The Code: GridVi

Mongo Dart SubDocument Updating and Editing

Hello I have a data like that: { "_id":ObjectID(), "field1":"field1 value", "group1":{ {"name": "name1", "favoriteBooks":{"book1","book2"}}, {"name": "name