Flutter Heroes

New post on /r/flutterdev subreddit: Flutter Recipe App UI Speed Code with Source Code (In Description) https://www.youtube.com/watch?v=XImxGHi5p4w April 27, 2021 at 05:09PM by imran_sefat https://ift.tt/2RZoIoQ

New post on /r/flutterdev subreddit: Ep. 024 - noLoop() | Flutter Processing https://www.youtube.com/watch?v=nMtAEIofx6E April 27, 2021 at 06:04PM by MarkOSullivan https://ift.tt/3dS7ulP

New post on /r/flutterdev subreddit: Fixed/sticky header DataTable and PaginatedDataTable https://pub.dev/packages/data_table_2This package extends Flutter's standard DataTable and PaginatedDataTable widgets with sticky/fixed header row (and paginator) capability. The new widgets are DataTable2 and PaginatedDataTable2, they provide same API as the originals, and can be in-place replacements.The widgets behave differently than originals - they always stretch to fill the container and spreaed avaialable space between columns (potentially clipping cells) - stock widgets build the table as big as needed to diaplay contents of all cells. DataColumn2 can be used instead of DataColumn to define relative sizes of columns (S, M, L). Table can have minWidth defined and itt will scroll horizaontaly if the container happens to be smaller. DataRow2 has row level tap events (originals have cell level taps) and right click events. April 27, 2021 at 06:15PM by medicince https://ift.tt/32Q7gWb

New post on Flutter Dev Google group: Selected Item in List-- show position Hi Flutter Community, I posted a question yesterday and just realized I can do a better job at describing my issue, so here is a better description of it! I have ListView.builder with horizontal scrolling (a custom top navigation bar). As I scroll to the right, the 'selectedIndex' is changing, April 27, 2021 at 06:09PM by Andrew Villegas https://ift.tt/3viteNu

New post on Flutter Dev Google group: Instance member 'user' can't be accessed in an initializer Hello, I am trying to pass the user.uid from the NavigationPage to ProfilePage, but I get this error message: "The instance member 'user' can't be accessed in an initializer. Try replacing the reference to the instance member with a different expression". I am using the following code: class April 27, 2021 at 04:28PM by Alvaro Gonzalez Rico https://ift.tt/3xt6b4F

New post on /r/flutterdev subreddit: <b>Flutter as Web SPA framework: dare to use it instead of Angular or React?</b> <strong>TL;DR</strong> it is doable, there're rough edges, Flutter is cleary not 'native' to the web world (unlike Angular) and not completely tailored to Desktop developmentIntroDuring a Flutter workshop that demonstrated how easy it is to build an app for 6 platforms we discussed the most common cases and concluded that the range of supported platforms is great, but not a killer feature. In a realistic scenarious one might need apps for Android and iOS (optionaly PWA) that have same UI. Then there should be an SPA Web app tailored to Desktop screens (and thus having different UI and richer features). There're tools that fit nicely both of the cases and having same tools used for both Mobile and Desktop development might not be that beneficial.A question emerged, if we used Flutter as a web framework to build SPA for desktop instead of Angular or React, what would it be like?Few weeks latter in my company we started a PoC rewriting small part of a legacy app (AngularJS, Node.js, OData) to a new tech stack (Blazor WASM, .NET 5, gRPC). I decided why not try my Flutter skills and build a second client PoC. Sharing my experiences here...DemoBelow are 2 links of the Flutter client I've built:HTML Renderer: <a href="https://maxim-saplin.github.io/flutter_web_spa_sample/html/#/">https://maxim-saplin.github.io/flutter_web_spa_sample/html/#/</a>CanvasKit Renderer: <a href="https://maxim-saplin.github.io/flutter_web_spa_sample/canvaskit/#/">https://maxim-saplin.github.io/flutter_web_spa_sample/canvaskit/#/</a>And the repo: <a href="https://github.com/maxim-saplin/flutter_web_spa_sample">https://github.com/maxim-saplin/flutter_web_spa_sample</a>The apps are built with Flutter beta 2.2.0-10.1.preFeaturesCustom data grid (based on extended stock DataTable) with sticky header, pagination, sorting and Excel like column filters (pop-ups appear when cliking on column headers)Right click context menu for rows via custom widgetA hack to silence browser's context menu when doing right clicksChanging visible columns and saving the configuration to shared_preferences (gear icon)Localization via i18n_extension packageRouting via top menu and sharing 'Master page' between different content pages (there're 4 routes)Layout with fixed header/footer and expanding content areaCustom icons in TTF font generated from SVG (via <a href="https://icomoon.io">icomoon.io</a>) and bundled in assetsPopover/popup for advanced search (magnifier button)Adv. search and filter are implemented via custom_pop_up_menu packageIoC (switching fakes/ gRPC implementations) via Provider state managementflutter_hooks as alternative to StatefulWidgetgRPC back-end intergations and auth via JWT (though not used in demo, fakes turned on)Conditional imports for gRPC client to allow different implementations in Web/Native (gRPC Web Proxy is required for browser clients)EffortIt took me ~7 days (~56 hours) to complete the PoC:First weekend (2 days) to create the layout and customize DataTable to support sticky headersSecond weekend (2 days) to complete the UI fucntionality with mocks and properyl structure the codeAnother 5 days integrating with gRPC, troubleshooting, presenting auth, tinkering with UI etc.Before starting the project I had ~8 months of casual experience with Dart/Flutter doing small projects, as well as some React/Redux experience in 2018/2019.The developer working on the Blazor side (with experience in .NET and React, but not Blazor) spent 3 weeks doing the same client, though not completing it (e.g. no selection of columns, no localization etc.).Subjectively, Flutter was percieved as a very productive tool.Impressions/IssuesDebguing using VSCode (on both Windows and macOS) is very troubling: breakpoints are not predictable (sometime they don't fire, they keep firing event when removed), VSCode debugger occasionally refuses to show variable values. Often…

New post on /r/flutterdev subreddit: entry – make your widgets come to life https://ift.tt/3eD2noT April 27, 2021 at 07:14AM by MickaelHrndz https://ift.tt/3aKD9ns

New post on /r/flutterdev subreddit: Is there a way in Flutter desktop to be able to listen for controller inputs? Hi everyone!I know that it's possible to listen for keyboard activity. However with the advent of Flutter desktop, I can imagine that a lot of OS support still isn't quite covered yet.My idea was it would be cool to be able to visualize in Flutter a flight controller (Specifically i have the Saitek X52 Pro in this case).And i believe that I can bind all of the buttons and switches to key's on the keyboard, but I have no idea what to do with reading the analog signal from the flight stick and thrust controller.I would really love to create some cool sci-fi UI's in flutter that take advantage of custom controllers with analog inputs and thought it could be a fun project.Any ideas? April 27, 2021 at 09:22AM by mcmalloy https://ift.tt/3tRBXpI

New post on /r/flutterdev subreddit: Flutter Tutorial - User Profile Page UI 1/2 (Johannes Milke) https://www.youtube.com/watch?v=gSl-MoykYYk April 27, 2021 at 09:30AM by JohannesMilke https://ift.tt/3aCYCP5

New post on Flutter Dev Google group: Access Flutter website I have a problem in accessing flutter.dev, I tried to access from laptop and mobile and the same issue, I couldn't download the flutter sdk, please help. [image: flutter.dev.png] April 27, 2021 at 09:50AM by Muhammad Hesham https://ift.tt/3dWTQy2

New post on /r/flutterdev subreddit: How to Manage Space Between Column's Children In Flutter ?? - Flutter Agency https://ift.tt/3dVorfq April 27, 2021 at 07:27AM by lil_dragplix https://ift.tt/3u1ud4M

New post on /r/flutterdev subreddit: http vs dio Which do you prefer, http package or dio package? What is difference between them? Why you prefer? April 27, 2021 at 07:49AM by Old_Actuator_9043 https://ift.tt/3sTbXcf

New post on /r/flutterdev subreddit: Why would I want to use ChangeNotifierProxy provider? I was reading the Provider documentation. I was specifically reading about the ChangeNotifierProxyProvider. It describes that its purpose is when one ChangeNotifier depends on another.Why do I need to use provider ChangeNotifierProxy when I can just do the following...

import 'package:flutter/widgets.dart'; 

class CounterModel extends ChangeNotifier { int count = 0; void increment() { count++; notifyListeners(); } }class OtherModel extends ChangeNotifier { final CounterModel _cm;OtherModel(this._cm) { _cm.addListener(() { // do stuff here. }); } }I can then construct my ChangeNotifiers in main.dart, and OtherModel will be updated of changes to its CounterModel.I assume there are some uses cases that I am missing. Can anyone enlighten me? April 27, 2021 at 05:57AM by scorr204 https://ift.tt/334lkLX

New post on Flutter Dev Google group: Regarding Editing of Data I am not able to edit value in TextBoxes. Please help me out. I am filling the value from SharedPreference into the textboxes. Now I want to edit it. But I am not able to do it. Here is my code /// import 'dart:ffi'; import 'package:conqer_music/App/navigationDrawer/navigationDrawer.dart'; April 27, 2021 at 05:54AM by HIMANSHU MISHRA https://ift.tt/3aFsJFm

New post on /r/flutterdev subreddit: Real world cryptocurrency apps that powered by flutter Hello, I'm going to create an wallet app about btc, eth and its assets. I'm looking for some real world apps that developed by flutter, close source or open source, I wanna to prove with our team lead about cryptocurrency libs are ready for flutter to create real world app, not prototype or demo app.Thank you. April 27, 2021 at 04:54AM by wintery2021 https://ift.tt/3xAaivZ

New post on Flutter Dev Google group: custom appbar issue Hi, I have written custom appbar and trying to use in different screens but then its colliding with notification bar of the mobile.... and there is no spacing between appbar and notification bar of the device ,when I tried to manage the height of the appbar with preferred size it showing like April 27, 2021 at 03:35AM by vivek sompalli https://ift.tt/3tX97UO

New post on /r/flutterdev subreddit: Entry – Make your widgets come to life https://pub.dev/packages/entryFlutter package that lets you simply animate a widget into a visible state.One widget to animate the opacity, scale, position and angle.You can combine multiple entries. It can be used to create a staggered effect with grid builders. April 27, 2021 at 12:01AM by MickaelHrndz https://ift.tt/3vknXFl

New post on /r/flutterdev subreddit: Login with Telegram in Flutter App Today I discovered that Telegram offers to developer also a “Login with Telegram” widget and I thought it would be really cool to add this in flutter apps.Sadly the official documentation only offers instructions for JavaScript (i think, I’m not sure 😅)Any ideas to use it in Flutter? Did anyone tried it so far? April 26, 2021 at 09:25PM by Elodran https://ift.tt/2S5tW2x

New post on /r/flutterdev subreddit: Flutter Application deployed to app store with animations! https://youtu.be/vIYDMDVIWSQ April 26, 2021 at 08:35PM by shehriyar_ https://ift.tt/3aJyge6

New post on Flutter Dev Google group: XmlHttpRequest error Hi, I am using Django as backend and implemented CORS, it works in mobile version but it does not work in Web. What is the problem please help me I run Django on local and I also get this message when I try to run the app on web "POST /e_commerce/getproduct HTTP/1.1" 200 278 Error: XMLHttpRequest April 26, 2021 at 09:11PM by Ilker Gul (Student) https://ift.tt/3nkQd84