New post on /r/flutterdev subreddit:

Flutter 2.0, shout out to the Flutter Team!!!
In my over 3 decades work as a developer I have never upgraded my development environment to a major upgrade in such a short period of time. Outstanding!!!I put aside the day to upgrade a large app I've spent the better part of a year working on. After 20 minutes of updating on pub, and 2 small code changes I ran flutter upgrade, and got nervous. I've been running tests for an hour, and now I'm going to play the rest of the day.Again, thank you Flutter Team!!!
PS: I spent 17 years on Delphi 7 because we could never upgrade our entire suite of apps to Delphi 8...10...

March 14, 2021 at 04:50PM by jrheisler
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New post on Flutter Dev Google group:

Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain
Hello there, The flutter doctor -v output shows that there is no problem below, but when I say flutter run, I get a gradle error. flutter doctor -v (Terminal Output) [√] Flutter (Channel stable, 2.0.2, on Microsoft Windows [Version 10.0.19042.867], locale en-TR) Flutter version 2.0.2 at

March 14, 2021 at 07:44PM by Muti
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New post on Flutter Dev Google group:

More Details about flutter documentation
Hello, I want more details about some properties, unfortunately, there are not much. For example, I can avail very minimal info about onPressed property here- https://ift.tt/3rLGyZG By this, I mean where can I get the whole expression goes

March 14, 2021 at 08:03PM by Neail
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New post on Flutter Dev Google group:

ERROR: Undefined name 'Matrix4'
This just popup up and I can't find any inform about the error online. "Undefined name 'Matrix4'. Try correcting the name to one that is defined, or defining the name. Any clues on how to solve?" iMac 27" and 16" MacBook Flutter: 1.22.6 and 2.0.2 VSCode: 1.54.2

March 14, 2021 at 08:47PM by jerry hamby
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New post on /r/flutterdev subreddit:

Flutter app’s state in Isolate
There are many ways to manage state in Flutter, but most of them are built in such a way that all the logic is executed in the main isolate of your application. Execution of network requests, working with WebSocket, potentially heavy synchronous operations (like local search), all this, as a rule, is implemented in the main isolate. This article shows other doors as well.

March 14, 2021 at 11:13PM by bitter-cognac
https://ift.tt/3tlEgRs

New post on /r/flutterdev subreddit:

Cool to post this? Vytality Health seeking Flutter devs - remote
Company: Vytality HealthJob: Flutter/GraphQL Development InternType: Internship, Side-ProjectLocation: San Francisco, CaliforniaAllows remote: YesHello All, Vytality Health is looking for development interns who wants to build a healthcare social app & algorithms with us for the elder and patient-care space. We are a bootstrapped startup in San Francisco, CA developing an Flutter/GraphQL platform to help elders, patients, and caregivers connect to track their mental and physical well-being.Our ideal candidate is someone with basic knowledge of Dart, GraphQL & Flutter (such as a recent graduate) who is looking for real world startup experience, or an experienced developer looking for a break from artless commerce and willing to share a few hours a week to impact elders and patients' lives.Please visit our site at http://vytality.co, or PM me for more information.

March 14, 2021 at 11:01PM by _oracle-
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New post on /r/flutterdev subreddit:

Best format to send List<String> over the internet(MQTT)?
I have a List<String> of words. I want to send and recieve the same over MQTT.What would be the best format I could use?I'm thinking of JSON but it doesn't look like it's the best way about it.Suggestions Please?

March 14, 2021 at 10:40PM by not-not-lazy-dev
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New post on /r/flutterdev subreddit:

Flutter Tutorial - Flutter Keys - Unique Key (Johannes Milke)
https://www.youtube.com/watch?v=WhnB_5yjyWQ

March 14, 2021 at 10:10PM by JohannesMilke
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New post on /r/flutterdev subreddit:

Full-stack development with Flutter/Dart?
Anyone has experience creating both back-end and front-end using Dart (and UI with Flutter)? Flutter + Firebase don't count.There're several back-end frameworks out there (Angel, Aqueduct, Shelf) - would be interested to see if someone actualy used them (or any other). Comparing of conventional frameworks you dealt with in the past(i.e .NET/ASP.NET, Java, PHP) to Flutter/Dart back-end experiences is appreacted.

March 14, 2021 at 10:05PM by medicince
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New post on Flutter Dev Google group:

Flutter Support to College
Hi Folks, I am just wondering if there is any support can college get to support teaching flutter to university students? Regards

March 14, 2021 at 11:27PM by ABDOLBAST GREEDE
https://ift.tt/3bLexvC

New post on Flutter Dev Google group:

Target of URI doesn't exist: 'package:flutter/material.dart'.
Hey Guys, I have a big problem. And I don't have much experience with flutter. import 'package: flutter / material.dart' appears underlined in my project. Target of URI doesn't exist: 'package: flutter / material.dart'. Try creating the file referenced by the URI, or Try using a URI for a file

March 15, 2021 at 12:36AM by Muti
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New post on /r/flutterdev subreddit:

Why can't firebase be written in pure dart? (the current uses platform channel codes and not compatible with all platforms)
First of all, firebase uses WebSocket for real-time communication. And WS can be written with pure dart. So I'm wondering why do the current firebase plugins from the flutter team are written with platform codes. Can't it be done with pure dart alone? What part/s of firebase can't be written with pure dart?I kind of get it though for example with Notifications. Different platforms have different ways to show notification so platform codes are needed. But what about database or firestore, they just send and receive data that has nothing to do with the platform at all.Why is this a problem?Because currently, the firebase packages are way too scattered. The package for the web is separated, the package for mobile and macOS is also separate, and lastly, the current versions of these firebase packages don't support windows and linux yet.References:web_socket_channel - WS package on pub.dev written by people from google. compiles to native and javascript so the web is possible. And meaning it supports every platform listed on pub.dev (mobile, web, Linux, Mac and win).Work with WebSockets - an official guide from flutter.dev about working with WebSockets in flutter.Firebase Callbacks - what's the underlying trigger? - a stack overflow thread about firebase using WebSockets.firedart - an interesting firebase package that supports almost all platforms and pub.dev. But it doesn't show the web compatibility badge on it.

March 15, 2021 at 01:38AM by yurabe
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New post on /r/flutterdev subreddit:

The responsive_styled_widget package now supports explicit animations
Hello everyone. I am here once again to shamelessly promote my recently developed package responsive_styled_widget . The documentation is not up-to-date yet so I recommend you read about it here. It now supports scroll animations, preset animations, global animations, etc. Please kindly provide any feedback you have. Thank you!

March 15, 2021 at 02:09AM by kevinvan0720
https://ift.tt/3eD5vm5

New post on Flutter Dev Google group:

When imageCache.clear , CustomScrollView doesn't maintain image size in scrollView anymore
I'm facing a problem, When I call PaintingBinding.instance.imageCache.clear(), CustomScrollView doesn't maintain image size in scrollView anymore. I know the cache is cleared. but I'd like to maintain image size in CustomScrollView, How to solve it? Thanks a lot. This is a minimum reproducible

March 15, 2021 at 03:42AM by Tang Hai
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New post on /r/flutterdev subreddit:

How hard would it be to make a team journal/schedule app?
I can't get into specifics but I had an incredibly negative experience with contractors (not Flutter related) - they bailed on a relatively simple app (a group of people sharing notes/schedule with notifications when a new one is added) because I guess one of them had a mental health breakdown and the other did not tell us (after 6 months passed by).I have the free time to learn Flutter and it seems SO POWERFUL. I'm 1/2 through the App Brewery course and I feel like after completing the course I'll have a firm grasp on how to use flutter.Maybe it's a silly question - but do you think after the course I'd have the capability to make a team journal app? I'm just a little demoralized after the negative contractor experience and am wondering if I have reason to be optimistic?

March 15, 2021 at 05:57AM by DracoDude1
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New post on /r/flutterdev subreddit:

Flutter AWS
I am currently building an flutter app. I need to use SQL database. I know that AWS AppSync does not support flutter. Considering that I am a beginner, how hard it is to build AWS PostgreSQL for flutter app? Will I need to spend a lot of time on backend? What kind of steps I need to take or what kind of things I need to learn to deploy flutter app with AWS PostgreSQL database?

March 15, 2021 at 06:23AM by yaxcioglan
https://ift.tt/3ldCuPm

New post on /r/flutterdev subreddit:

DocxTpl flutter plugin. A word templating plugin in flutter
I finished .docx template plugin that use jinja2-like tags in .docx doc to easily generate the doc in flutter from a word document template. A very basic approach for now, i have big plans and contributions and PRs are welcome 😁. I plan to add more complex tag but above all, to make it easy to flutter like widgets to create and generate document content (inspired by the pdf flutter plugin)https://pub.dev/packages/docxtpl#

March 15, 2021 at 08:28AM by don9ld
https://ift.tt/30IXJ22

New post on /r/flutterdev subreddit:

Sound Null Safety: make better apps with Flutter!
https://ift.tt/38BpFcj

March 15, 2021 at 08:07AM by polilluminato
https://ift.tt/3tkYXgg

New post on Flutter Dev Google group:

Index in string and list
There is some possibility that the way to do this is added: String lastTwo = value1 [value1.length-2] + value1 [value1.length-1]; like this: String lastTwo = value1 [-2] + value1 [-1]; It is much faster and easier.

March 15, 2021 at 09:40AM by Hekhy
https://ift.tt/3cs1VZs

New post on /r/flutterdev subreddit:

How to work best practise with user specific data from firebase firestore
Hello together,I'm currently diving deeper into NOSQL databases (I'm working with flutter) and I'm really a fan of the official firebase youtube series "Get to know Cloud Firestore" https://www.youtube.com/watch?v=o7d5Zeic63s&list=PLl-K7zZEsYLluG5MCVEzXAQ7ACZBCuZgZ&index=4Because of the many possabilitys im quite unsure to some topics which might look really easy for you guys but I kind a like break my head.Let's say we have the following scenario:there is a dating app where you can like people and there are scores and you can show up the favorites and you have kind a like a list where you can see random 10 profiles.So like alot poeple are saying "Demoralization in NOSQL" is a good approach to work with. Saving parts of data as a duplicate to ensure we don't have to do 2 queries while fetching alot of informations we never would use.For example lets say on the home screen there is a list of 10 men profiles and below that we have a likes count and the 3 recently liked people as small bubbles with their profile pictures. they would be fields from a users collection and it wouldn't be good to call an extra query for the users only to retrive profile image and name field rather than just saving those fields as duplicate with the profiles. as extra field. That seems fine to me.-----------------------------------------------But what happens if we want to show the clients a list of men profiles and see if they have already liked the profile by showing a filled heart or border heart? (Also imagine instagram with the hearts showing if liked or not) How would the approach look like for this and why ?does somebody have a best practise here? This is kinda like user specific data, how would I structure my data and how would the query look like?P.S: Also im not sure how many reads and writes each function takes and what about doc.exists() ?. Is there a way we can say like when we are running examplefuntion() which is retrieving something, that the console says oh hey that was 100 reads 0 writes?P.S: Because im quite a rookie and im watching a lot videos and the documentation im not sure when to use duplicate data and when to use cloud functions. Would be nice if someone could clear things up here.Im really thankful for everyone reading my post here and answering my questions!

March 15, 2021 at 10:28AM by md186
https://ift.tt/3s0AU5K

New post on /r/flutterdev subreddit:

Flutter for a map focused app?
Hello everyone,I'm currently in the process of building a project that needs an app for iOS as well as Android. I already built the backend and the web app, the web app uses React. I initially thought about building both apps with react native, which is not really a feasible option due to the limited map support inside React Native. I then considered building native Apps for both platforms, but since I'm a solo developer on that project, that's really not an option. Since flutter is getting more and more mature and I saw the flutter engage contents, I thought I might check on flutter again. I have some limited experience with flutter and used it to built fairly simple blog style applications in the past.My current project is heavily focused on geo data and maps, so the map will be the core component of the mobile apps. I haven't decided on the map provider yet, but its a decision between Google Maps and Mapbox (as of now, I'd prefer Mapbox).For Google Maps this seems to be the official package by Google, this one seems to be the official Mapbox package. Mapbox already states that their package only exposes a small subset of API methods in its flutter SDK, how is it with Google Maps? How limited are the Packages in terms ofGesture supportDrawing on maps (especially (custom) markers, driving routes and poly lines)Performance (including caching etc)?Maybe someone already has experience building map heavy applications with flutter? Which mapping provider did you use? Did the official package suit your usecase or did you have to build additional functionality for the maps yourself?Maybe someone can share some of their own experiences

March 15, 2021 at 10:06AM by mooo99
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