New post on /r/flutterdev subreddit:

RASP or App shielding for Flutter
Does anyone know any production-grade app Shielding (RASP) sdk for Flutter development?

March 16, 2021 at 08:23PM by sergeychuk
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New post on /r/flutterdev subreddit:

DaKanjiRecognizer: Machine learning and flutter to read japanese characters
Some time ago I published my app 'DaKanjiRecognizer' for desktop platforms. It is an open source kanji recognition software which works completely offline.Now I am very proud to publish DaKanjiRecognizer for mobile (just android at the moment) built with Flutter. It is an source available app which uses an even better AI than DaKanjiRecognizer for desktop. It also has a few more improvements. The features at the moment are: * transform your hand drawn Kanjis to digital characters no internet needed * the stroke order is completely unimportant and does not need to be know * use pre-defined and custom web dictionaries * use the anroid takoboto app to translate predictions completely offline * any system translator app can also be used (ex.: google translate)There are more features to come like: * recognize all kanjis from the kanji kentei test * ocr * ... so stay tuned!You can find the mobile version on google Play And its repository hereThe desktop version is available hereIf you have any feedback please let me know here or on github. I hope that this app can help somebody.Have a nice day!

March 16, 2021 at 10:46PM by dariyooo
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New post on /r/flutterdev subreddit:

How to create your own group video calling application in Flutter
Hi there everyone, 👋Building and scaling a video calling application is the need of the hour. Every company and platform is adding such features to their application to ensure fluidity in their work and to maximise their engagement. For our ease we have an easy to use Flutter SDK by Agora that helps us in scaling the application without compromising on the video quality.The advantage with Agora is tied to the Agora SD-RTN (Software Defined Real Time Network). Agora has built a global virtual network with over 200 points of presence that is optimized for real-time voice and video. The SD-RTN leverages a proprietary UDP protocol that improves on certain features such as packet loss prevention, removing cross continental delays, and smart packet routing. Agora also has its own optimizations on the packets so even with a high packet loss scenario it still allows for high deliverability of video/voice packets with ultra low latency, across in the world.I recently wrote a blog on how to create your own Group Video/Audio calling platform using the Agora Flutter SDK. Do have a look at it if you're interested: https://meherdeept.medium.com/group-video-calling-using-agoras-flutter-sdk-53abbef1bb55You can find the complete code over here:
https://github.com/Meherdeep/agora-group-calling

March 16, 2021 at 10:35PM by ameanhoeacid
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New post on /r/flutterdev subreddit:

If you have experience with approving performance please help me
Admin please don't send me to flutter help because no one helped in there, I have tv channels provide app that works perfectly on (android tv, box, phone) but i have a problem, there is a list of channels on my video player visibles when user presses Ok/select button thats ok but when user hold Down arrow to scroll listview.builder faster the listview and the video are freezing i know its because of single threaded but i don't knows how to solve it also i don't want to remove my listview.builder on top of video, i googled but didn't seen any helpful information, thanks

March 16, 2021 at 11:45PM by diyar_gulli
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New post on Flutter Dev Google group:

flutter 2.0, build web(stable): Failed to compile application for the Web
Hello there, Is there any workaround for this problem? Dart Version: 2.12.1 Flutter Version: 2.0.2 channel stable Package compatibility issue has passed. regards, /Patrick *> Flutter build web* * Building with sound null safety * *Target dart2js failed: Exception: ../../flutter/.pub-ca

March 17, 2021 at 03:24AM by Patrick386
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New post on /r/flutterdev subreddit:

PostgreSQL and AWS
Hi guys,I am a beginner programmer, and I am planing to build an app with PostgreSQL running on AWS. Since I am a beginner I have a limited amount of experience with AWS. I have built app with Firebase but I would like to learn AWS as well.Could you guys explains what things I need to learn/implement to use PostgreSQL with Flutter?I know that AWS AppSync does not support Flutter, what is the difference between having the AppSync services for PostgreSQL and not having it? Is it more work to connect PostgreSQL with Flutter? Will I need to spend a lot of time on AWS without AppSync?

March 17, 2021 at 04:02AM by yaxcioglan
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New post on Flutter Dev Google group:

Accessing InheritedWidget from Provider
Hi all, I'm using an InheritedWidget to implement dependency injection in my app. I have a root-level InheritedWidget that holds the dependencies I want to inject throughout. I'm attempting to access the InheritedWidget's data from a Provider, but I get the following error: ----- Bad state:

March 17, 2021 at 05:43AM by Matt Stagitis
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New post on Flutter Dev Google group:

here my listview is not scrolling dart flutter , please help me iam new to flutter
hi, this is mycode Widget verticalList = new Container( margin: EdgeInsets.symmetric(vertical: 0*SizeConfig.heightMultiplier), height: MediaQuery.of(context).size.height, child:ListView( shrinkWrap: true, scrollDirection: Axis.vertical,

March 17, 2021 at 06:24AM by Navas jaseer
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New post on /r/flutterdev subreddit:

Flutter Migrate App to Null Safety | Flutter 2.0
https://ift.tt/3cF3Biq

March 17, 2021 at 07:13AM by rrtutors
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New post on /r/flutterdev subreddit:

Is there a way to auto select keyboard language?
There was a feature in iOS Duolingo where, if you're typing in exercises in foreign language, the app will auto select the keyboard of said language, if installed. E.g. if you're typing in Swedish exercise and has Swedish keyboard installed, it will automatically bring up Swedish keyboard for you, no matter which keyboard you were previously using. Is this feature doable in Flutter?What I'm trying to achieve is to auto select English keyboard or whatever keyboard that can only input Latin alphabets in some fields. I've tried 'keyboardType' but even 'TextInputType.Password' won't auto bring up alphabetic keyboard. In Swift there's an 'alphabet' option in textField.keyboardType, but it's missing in flutter. I'm not sure if it's due to android lacking this feature.

March 17, 2021 at 06:27AM by stvneads
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New post on /r/flutterdev subreddit:

Movie Streaming app UI design built in flutter
Hello developers,My friend is working to UI designs, yesterday he just published Movie Streaming app UI design built in flutter, please give a star ⭐ if you like ithttps://github.com/chromicle/awesome-flutter-ui

March 17, 2021 at 07:58AM by donetob950
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New post on /r/flutterdev subreddit:

Top 10 new Features of Flutter 2.0
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March 17, 2021 at 07:57AM by EllaNicholls
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New post on /r/flutterdev subreddit:

Flutter Design Patterns: An overview of the Mediator design pattern and its implementation in Dart and Flutter
https://ift.tt/3lmvhfZ

March 17, 2021 at 09:33AM by mkobuolys
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New post on Flutter Dev Google group:

Flutter Multiselect Chips from API
I am using this Package

New post on /r/flutterdev subreddit:

Dart/Flutter sound null-safety good enough??
Hello everyone,I would like to start a discussion if the new “sound null-safety” is enough or if dart/flutter should go even further to a “sound language” (whatever that means)?First of all, coming from iOS/MacOs development with Swift/UIKit/Swiftui, flutter is very exciting and fun and first impression is great. None the less even after this new “sound null-safety” which is a good start, Swift seems to be the much safer (better?) language.For me the idea behind null-safety is making your program much safer and crash less often. But null-safety only treats part of the problem. Let me explain why:EXAMPLE1

exam1(i) { var n1 = i + 4; // should this be okay? int n2 = i + 4; // this compiles int n3 = 4 + i; // this does not } 

In my dream world this code should – from a safety standpoint – not compile. Adding the integer 4 to anything that I put in and it is okay with that?? This is madness! Creating an integer from anything plus 4 is okay? Strangely enough 4 plus anything is not okay?The language should force me to use specify types everywhere! Leaving it blank to mean “dynamic” should not be an option. Being explicit is key! “Yes I want dynamic type here” / “Oops you are right, the input/var should be an int”.If I use dynamic type, it should again force me to cast it to an integer before use and provide a default value if that fails.EXAMPLE2

void exam2() { List<int> nums = [1, 2, 3]; int n1 = nums[8]; // not safe (crash) int n2 = nums.elementAt(8); // not safe (crash) // something like this should be possible if nullable types were used instead of exceptions and it would be safe //int n3 = nums[8] ?? 5; //int n4 = nums[8, default: 5]; //int n5 = nums.elementAt(8) ?? 5 //int n6 = nums.elementAt(8, default: 5) } 

Why is there no easy and short why to access a list in a type safe way (without comparing index to list length)? If indexing a list or using elementAt provided a nullable type (e.g int?) you can work with lists in a 100% type safe way and even specify a default value if the index is out of range.Dart should make more use of nullable types and less exceptions. Exceptions crash your program (if not handled); using nullable types and null-safety prevents this.EXAMPLE3

void exam3() { List<int> nums = [1, 2, 3]; int n1 = nums[8]; } 

Calling a function should always (99.99%) be safe. Other programming languages have keywords like “throw/throws/throwing” to indicate that a function call is not save and you need to handle errors. For me it is super annoying that I cannot be sure that the function I call is safe and I might have to dig into the documentation for details. Again, having the language/compiler force me to specify throwing functions with a keyword and to handle those exceptions provides safety!There should be some keyword that indicates if a function/method can throw an exception so the compiler forces you to handle these to provide safety.​Sound null-safety is a great start but there is much more a language can do to prevent bugs/errors/crashes.I think in a “sound language” the program should not be able to crash unless the programmer explicitly allows it!This is only my opinion that is heavily influenced after using swift for many years.Do you think this is something that is planned for dart (maybe 3.0?), or do you think that the new “null-safety” is safe enough and the dart/flutter team will not improve safety much more??

March 17, 2021 at 10:57AM by JulianCologne
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New post on /r/flutterdev subreddit:

A post about Hive Database in Flutter! It's about storing Custom objects ie. Creating TypeAdaptors!
https://ift.tt/3vBfcri

March 17, 2021 at 10:33AM by mukhtharcm
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New post on /r/flutterdev subreddit:

Tool for screenshot creation
Hi all! I made a tool to make my life easier when capturing screenshots. If you have time, take a look at it and send your feedback! https://borosr.medium.com/how-to-capture-screenshots-for-a-flutter-app-d0aaca7f6cac

March 17, 2021 at 11:54AM by borosr
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New post on /r/flutterdev subreddit:

Dashboard Screen with HTTP Get Request
https://youtu.be/Rk-i0yLOZxw

March 17, 2021 at 12:15PM by SnippetCoder_YT
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New post on Flutter Dev Google group:

Re: Flutter MultiSelect Chips
I see the code calls fetchData method in initState. What is not working? On Wed, Mar 17, 2021 at 06:12 Navin Prakash

New post on Flutter Dev Google group:

Getting Bool State from Firestore in Dart
Hello! I am trying to get a bool value from Firestore when the app is being initialized: it returns True if it is "like" and False if it is not "like". Every time a user likes/unlikes a post, a database (called userFavorites) is being created or update on Firestore. The userFavorite database is

March 17, 2021 at 02:09PM by Alvaro Gonzalez Rico
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New post on /r/flutterdev subreddit:

E-Commerce App Template
Y'all seemed to have liked the Social Media app template I released a few weeks ago... So here is one for an E-Commerce app!Check it out at flutterui.design.Again, feel free to use any of this code in your projects and I'm open to feedback!P.S: Some of the design inspiration came from The Flutter Way YouTube channel.

March 17, 2021 at 03:12PM by Apallon
https://ift.tt/3ePi127