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New post on Flutter Dev Google group:

Single progress bar for uploading multiple file to firebase storage
I want to show progress of file uploading to firebase. I am able to show progress using snapshotEvents if only one file is uploaded. How can I show progress in a single bar when multiple files are uploaded.

March 26, 2021 at 09:55PM by Rakesh Singh
https://ift.tt/3rsCTPc
New post on /r/flutterdev subreddit:

A Flag widget to display unicode flag emojis
I wanted to share a simple Flag widget that displays a flag composed from so called unicode regional indicator symbols, however DartPad cannot display them*. Bummer. Still, here's my code in case somebody finds it useful.* I filed a bug.

March 26, 2021 at 09:48PM by eibaan
https://ift.tt/3w3qXas
New post on Flutter Dev Google group:

Having a problem when using Hive database.
When i call the function that i have made to put data's to the database hive. The error occuring that method was called don null.

March 27, 2021 at 05:02AM by Abin vs
https://ift.tt/3stAYeO
New post on Flutter Dev Google group:

Blocked JavaScript / Flutter
Hi Everyone, Could anyone assist and advise if they're able to pull through this page into a mobile application? I've tried everything and I understand the specific platform 'Mixcloud is a closed off-platform, but we are aware another client who uses this platform has done this through javascrip

March 27, 2021 at 08:17AM by Bridget Kelly O'Sheehan
https://ift.tt/3lX8LL1
New post on /r/flutterdev subreddit:

Best practice with Dart null-safety
Hi all Flutter and Dart developers. I working with json to dart generator and planning to add null-safety support. And I want to ask what is best practice create a class with null-safety. It's OK to use question mark ? everywhere maybe late is better in the some situations. How is best your practice in the reality. I'm self not started yet to use null-safety still with old.

March 27, 2021 at 11:57AM by a-rns
https://ift.tt/2QN9Ppj
New post on /r/flutterdev subreddit:

How to sandbox 3rd party apps that attempt to integrate components in a Flutter app
I've been working on a platform where I provide a bunch of productivity tools to the end user. One key aspect for the success of this platform is to open up a marketplace coming 3rd party providers. The application I develop works in multitenant mode (SASS). I have my own REST API that I plan to expose publicly trough an API gateway. Some triggers will be provided as well. Up to here all is fine, nothing tricky.Now the problem arrives if I want to allow other vendors to run components hosted inside the GUI. My closest experience to such a requirement is developing plugins for Jira Cloud. They offer: Rest API, Triggers and a homebrew attlasianconfing.json where you can define the views you want attached to which slots. Apparently they use iframes to sandbox the 3rd party providers and avoid anybody tampering with the rest of the page / data. Of course they also have some complicated business with access tokens as well and request throttling.I'm attempting to build something similar myself but I fail to find any tutorials on the web outlining a path forward. Afaik, Flutter has the webview, which behaves much like an iframe. I could be using that, but then you have performance implications. And here my knowledge runs short. Any advice or idea is very much welcomed!TLDR Is it possible at all to run Flutter components from 3rd party vendors in a sandboxed environment inside my own app?

March 27, 2021 at 12:49PM by SpaceInstructor
https://ift.tt/3m3Pesb
New post on /r/flutterdev subreddit:

If Flutter Web wont be supporting server side rendering any time soon (or at all) is it possible to rollout my own homebrew server side rendering with say for ex handlebars?
I'm working on designing and developing a platform for crowdsourcing and skill sharing. The core concept is to tie together several different essential activities in one single platform: posting, chatting, events, documents and planning. I don't want to go too much in the specifics since they are irelevant for the technical question. Suffice to say that I'll have all of these worfkflows all together in one SPA built with on single purpose: extremely quick onboarding of volunteers.Now for me, Flutter fits the bill excellently on all levels. I'm supper happy with my first experiments (coming from long react native experience). Some things are still not great such as, scrollbars, urls, text selection. Apparently all these have all sorts of fixes. However there's one MAJOR problem which spoils the party: SEO and servers side rendering.The app I'm designing will have content publishing as a major selling point. Which means SEO, which means SSR. Now all the google digging I did indicates this is yet to be addressed issue even with Flutter web being labeled as "stable". I've read all the articles that basically say "If you want SEO from Flutter turn around". Sorry, I can't. I need Flutter for many reasons that go beyond SEO. I'm currently a one man army with plenty of experience to complete the task, enough madness to go for it and no stakeholder to appease except me.I don't want every single page and neither any of the interactivity. I just want the posts pages and posibly some auxiliary pages that in essence contain static documents (about, legal, QnA, possibly some extremely basic product listings, etc). Has anyone attempted such a strategy for addressing SEO concerns in the context of single page apps? Basically here I'm asking if instead of waiting for the SPA framework (Angular, RN, Flutter, Vue) to do SSR for you, is it feasible and reliable to roll out your own homebres SSR with basic tools such as handlebars? I'd be willing to take a stab at this if the SEO results wont be appaling. Any advice is welcomed!Given the above statements, here's the question:TLDR Is Google going to be happy with me serving some pure html pages that look almost identical to the pages that I want indexed from the entire app?* Please don't attempt to convince me of chosing some other framework. I'm well aware of the implications and the popular alternatives. Thank you!

March 27, 2021 at 12:29PM by SpaceInstructor
https://ift.tt/39n2ing
New post on /r/flutterdev subreddit:

Flutter Dapp in Flutter Web
Anyone here tried to build a decentralised application in flutter web? All tutorials are only focusing on blockchain apps rather than the web. And the libraries aren’t the best in terms of documentation.

March 27, 2021 at 04:38PM by Thylawsnipeth
https://ift.tt/3rsItBe
New post on /r/flutterdev subreddit:

Hey Coders! Recently I've written an article about my navigation pattern in #Flutter 💙 It would be great if you checked it out 😉
https://ift.tt/30Z4QDr

March 27, 2021 at 08:03PM by ThatLukeUrban
https://ift.tt/3rt6LLE