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New post on /r/flutterdev subreddit:

Graphviz project for Flutter
Hello, I've been working on a small skill tree package and while doing so I stumbled upon Graphviz. It's a very popular package written in C/C++ to generate graph visualizations of any kind. In the past it's had bindings to JS, Python, Java and a lot of others. I don't have a lot of time to do this but I think there's a great open source package to be made here.I'm not an expert in C but the plan would be to use ffigen to generate dart bindings to graphviz. The hard work here alone would likely be a single package. However, I'd imagine users would want native flutter widgets on top of whatever graphviz spits out.Graphviz's performLayout output can be many formats including svg, json and image. In a UI dedicated package, we could likely use their returned json (which includes absolute positions and all that) and then make a flutter widget structure that we then insert into an InteractiveViewer. I'd likely be the most help here.I'm kinda full on bandwidth but I'd happily help someone interested in spearheading this

October 03, 2021 at 07:28PM by Nolence
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New post on /r/flutterdev subreddit:

Weather App in Riverpod State Management
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October 03, 2021 at 07:17PM by olu_tayormi
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New post on /r/flutterdev subreddit:

Anyone interested in open-sourcing high-level memory-safe bindgen for Dart/Flutter <–> Rust?
I have made a bindgen to allow Dart/Flutter to call Rust via FFI. It is memory safe, and you do not need to care about anything like allocate/free an object.Question: Anyone interested in it? If many people are interested, I can polish it can make it open-source. (Since you know, making it open-source will require some time and efforts.)FeaturesMemory-safe: never need to think about alloc/free.Zero-copy (almost): Big objects can be passed from Rust to Dart without any copy.Rich type support: Not only primitives like int/double, but also Uint8List(Vec<u8>), List<T>(Vec<T>), any custom structs. You can even use recursive structs.Async programming: Your Rust code can run for a long time, and it will not block the main isolate (i.e. not block UI). You can call functions directly in main isolate of Dart, so no need for switching between isolates.Easy to use: All you need to do is write down your Rust code. The bindgen will do everything and expose an API in the Dart/Flutter style.ExampleWrite the following Rust code (that is all you need to do!):``` pub struct TreeNode { pub value: i32, # of course, also support also support other types pub children: Vec<MyTreeNode>, }pub fn hello_world(s: MyTreeNode, b: SomeOtherStruct) -> Result<Something> { Ok(...) } ```It will automatically generate everything, and you only need to call a generated Dart/Flutter API which looks like:class ExampleApi { Future<Something> helloWorld({required MyTreeNode a, required SomeOtherStruct b}) async { ... auto generated implementation ... } }P.S. There already exists a low-level one (in the C style), but all memory alloc/free should be done manually, so it is quite unsafe. That is why I do this high-level bindgen.

October 04, 2021 at 04:48AM by fzyzcjy
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New post on /r/flutterdev subreddit:

ASR (automatic speech recognition) implementation
Who has experienced with ASR implementation with flutter? I try to find a good solution, for example, I have the external implementation of Deep speech, but performance is not very good. Maybe with tflite I can use a model with better performance, or maybe a better solution to use standard libs like speech_to_text. In my case, I want to recognize children's speech. What can you recommend?

October 04, 2021 at 09:05AM by PrestigiousAd5202
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New post on /r/flutterdev subreddit:

Flutter Portfolio
Hi guys, firstly I wanna say that I am new to reddit 🙃but I just wanted to ask some questions about the portfolio.... 1. does it have to be on git hub? because people who are hiring you doesn't have to know about code... I mean they want to see images and videos to decide 2. what are best websites other than gut hub to put portfolio on...lastly you can share your portfolio to get inspirations pls

October 04, 2021 at 09:30AM by osamawaseem1
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New post on /r/flutterdev subreddit:

How to Update Markers in Flutter Maps from Firebase Database?
A marker helps to easily identify locations, such as towns, buildings, or any points of interest on a map. But it may be difficult to manually update these marker locations if they change often. So, it is better to have them in a database.Syncfusion Flutter Maps is a powerful data visualization widget that displays statistical information for a geographical area. Its rich feature set includes tile rendering from OpenStreetMap, Azure Maps, Bing Maps, Google Maps, and other tile providers with marker support.In this article, we are going to see how to access and update markers in the Flutter Maps widget from a Firebase real-time Database. However, we are not going to discuss how to create a Firebase Realtime Database. For that, please refer to Add Firebase to your Flutter app documentation to create a database in a Firebase console and connect your Flutter app to it.The following example database is in Firebase. We are going to update the markers for each country in the Flutter Maps widget.https://www.syncfusion.com/blogs/post/how-to-update-markers-in-flutter-maps-from-firebase-database.aspxSyncfusion offers a free community licensehttps://www.syncfusion.com/products/communitylicense

October 04, 2021 at 01:23PM by ArunITTech
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New post on /r/flutterdev subreddit:

Flutter Tap Weekly Newsletter Week 105 - Tutorials, videos, packages, and much more!
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October 04, 2021 at 02:46PM by vensign
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New post on /r/flutterdev subreddit:

Frost Effect on Images in Flutter
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October 04, 2021 at 07:13PM by VandadNahavandipoor
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New tweet from FlutterDev:

RT @googledevgroups: 🚨🤩 #DevFest 2021 is finally here! This year, developers all across the globe are coming together to learn, connect, and drive positive change in their communities with @Google technology. Find a #DevFest near you → https://t.co/LG8taJ45Un https://t.co/hESKNDBBlb— Flutter (@FlutterDev) Oct 4, 2021

October 04, 2021 at 08:00PM
https://twitter.com/FlutterDev/status/1445086318153842689
New post on /r/flutterdev subreddit:

Newsletter Flutter Croissants 🥐 - #06 - Navigator 2.0 made easy, the Material You Navigation Bar Widget, new guides published for Fuchsia, how to inspect/profile your application, the best cities for software engineers…
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October 04, 2021 at 08:43PM by g123k
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New post on /r/flutterdev subreddit:

Flutter Firestore Collection Group
I have a collection company and each company has a collection employee. I want to create a query to retrieve a particular employee based on its document id. Do you have any idea how to do that?I was thinking about using collectionGroup("employee"), but I couldn't find a way to access the document id.This is my current code:
Stream<UserModel> streamFirestoreUser() { return _db.collectionGroup('employee') .where("email", isEqualTo: emailController.text) .limit(1) .snapshots() .map((event) => UserModel.fromJson(event.docs.first.data())); } 


October 04, 2021 at 08:37PM by john_soloman
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