2020欧洲杯时间表

Questions tagged [dart]

2020欧洲杯时间表 Dart is a class-based, statically(& strongly)-typed programming language for building web and mobile applications. Dart compiles to modern JavaScript to run in the browser and compiles to native code to run on mobile platforms like Android and iOS. Dart also runs on the command-line for scripting and server-side apps.

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Screen does not get widgets

I have a screen that loads some widgets according to a csv. But the screen just gets empty. Column( children: getPlates(), ), List<Widget> getPlates() { List<Widget> listWidgets ...
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Dart: Simultaneous http requests

Problem: Http.get requests in future functions are called one after the other. //this should open 5 simultaneous http connections for (var i= 0; i < 5; i++) { getImage('[image soure]', i); } I'...
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Android Studio Tab to Spacing in Flutter(Dart)

How can I change tab to space in Android Studio 4.0 ?
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File.writeAsbytes() not working on Android 4.4.4 Kitkat

I need a pre-made sqlite database file for my app which is in my flutter assets. When I try to copy it to the app's database directory, it doesn't work. It works well with Android API level 28 and 29 ...
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Laravel and Flutter Notifications System

I Want to Build a Web App with Mobile App in one platform. So, Both of Them will use the Same Database which is MySQL. I want to use Laravel as backend and flutter for mobile app Also, I want to build ...
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how to make Widget attributs optiobal in flutter

how can i make widget propery as optinal in flutter for example : if widget.image is not null user image property to set background and if it null use color property container( BoxDecoration( ...
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DropdownButtonFormField gives Error when try to display String

I want to make DropdownButtonFormField that shows cities like this: final List<String> cities = ['London', 'New York', 'Paris', 'Shanghahai', 'Tokyo']; String _currentCity; ...
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How to pass a string from one page to another on flutter?

How can I pass image_category(a String value) from one page to another and replace it with a Text widget? This is where I get the String from (scrlView):- @override Widget build(BuildContext context)...
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Please help me with flutter dependencies

E:\flutter\bin\flutter.bat --no-color pub get Running "flutter pub get" in news... Because every version of flutter_test from sdk depends on path 1.7.0 and hive_flutter >=0.3.0-dev depends on path >=1....
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3answers
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Where can I see print output in Flutter?

I am using Android Studio to develop an app with flutter and i need to print things to the console for debugging but i have no idea where to view the output as it doesn't show up in the console. I ...
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HttpClientRequest multipart/form-data

How can I pass multipart/form-data data to HttpClientRequest. I am posting to an https service with a self signed certificate. My current code is given below. HttpClient client = new HttpClient()...
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i have Flutter HTTP error exception 404 erreur

i'm trying to add data to json file in the local host String _localhost() { if (Platform.isAndroid) return 'http://10.0.2.2:5000'; else // for iOS simulator return '...
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Android studio doesn't detect chrome as a device for flutter development

My Android Studio doesn't detect chrome as a device to use for flutter development. I did everything according to the official documentation to get started with flutter web, and it works perfectly ...
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8 views

Understand when user stops using geolocator package in Flutter

I'm developing a application that tracks user position. I want to record all the positions where the user stops (is not moving). How can I do that using geolocator package?
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Flutter Share Image/File ( mimeType issue )

So i need to share an image to another application with Flutter, i use esys_flutter_share 1.0.2 plugin Future<void> _shareImage(int index) async { final filename = _imageList[index].split("...

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