New post on /r/flutterdev subreddit:

Trigger hot code reload from within an application
To demonstrate Flutter's hot code reload I wrote a presentation tool (a tiny subset of Keynote) that can embed source code – even its own – and which then triggers a hot code reload on saving. It's fun to see when people realize that those "graphics" are indeed live Flutter widgets or even complete applications.Using FFI it became quite easy to trigger the reload by sending a USR1 signal to the application's parent process which is the flutter run command. This obviously only works on debug builds.I'd like to share the relevant code here:

import 'dart:ffi'; import 'dart:io'; late int _ppid = () { if (!Platform.isMacOS) { throw AssertionError('only works on macOS so far'); } final dylib = DynamicLibrary.open('/usr/lib/libSystem.dylib'); final getppid = dylib.lookupFunction<Int32 Function(), int Function()>('getppid'); return getppid(); }(); /// Triggers a **hot reload** by sending signal USR1 to the parent process. void hotReload() { Process.killPid(_ppid, ProcessSignal.sigusr1); } 

It would be great if someone could share a solution for Windows. For Linux, you probably need to change the path to libc.so or similar.

October 22, 2021 at 05:03PM by eibaan
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New post on /r/flutterdev subreddit:

Flutter Top 5 Complete App UI Kit
https://youtu.be/VAplHlpnaHo

October 22, 2021 at 04:51PM by anwarabir
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New post on /r/flutterdev subreddit:

Drag & Drop Fun App in Flutter.
https://www.youtube.com/watch?v=LLP6m-lUJCQ

October 22, 2021 at 07:11PM by Dhanraj_Flutterdev
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New post on /r/flutterdev subreddit:

How to Display the Modal Bottom Sheet Programmatically in Flutter
https://ift.tt/3Gaw3GT

October 22, 2021 at 06:20PM by maco6461
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New post on /r/flutterdev subreddit:

Flutter Golden Test Secrets
https://ift.tt/3G5L8cC

October 22, 2021 at 08:04PM by fredgrott
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New post on /r/flutterdev subreddit:

Flutter animation made with CustomPaint / funvas
https://twitter.com/creativemaybeno/status/1451601351318941702?s=20

October 22, 2021 at 07:30PM by creativemaybeno
https://ift.tt/3B48dsn

New post on /r/flutterdev subreddit:

inspector - A Flutter eyedropper and widget inspection package
https://ift.tt/3jpUKFi

October 22, 2021 at 07:20PM by kekland322
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New post on /r/flutterdev subreddit:

Damn YAML
Damn pubspec file has been annoying me. I'm adding fonts and getting errors. So I assume that I have added extra space or something. Was going to reed documentation on the official page, but it's garbage there. The compiler also doesn't help with anything much. "Expected a key while parsing a block mapping"." YAML is a human friendly data serialization language for all programming languages. "Very friendly... Can't understand it at all. Checked code in validator showing all ok.I just can't keep my cool anymore and need to put this out at least.---------------------------After got it working----------------------------Ok, there was one extra space. But how do I know?I just keep removing spaces and trying it. This is bs...I'm I the only one with this problem?

October 22, 2021 at 11:01PM by Routine-Arm-8803
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New post on /r/flutterdev subreddit:

Commodore 64 Screen in Flutter
https://ift.tt/3vE3Va0

October 23, 2021 at 06:24AM by VandadNahavandipoor
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New post on /r/flutterdev subreddit:

My App Layout Broken in Tablet Mode
Why flutter not handle the scale by default? my app is broken. Now i need Screen_util library

October 23, 2021 at 10:01AM by bogaga200
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New post on /r/flutterdev subreddit:

Flutter Shape Maker - Creates Custom Paint Dart code
Flutter Shape Maker: It is to Custom Paint as Flutter is to App Development https://www.producthunt.com/posts/flutter-shape-maker

October 23, 2021 at 07:43PM by Pixelreddit
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New post on /r/flutterdev subreddit:

Apps built using Flutter Framework.
Can anyone post a list of famous apps/companies that used Flutter for apps that are used by millions of People?We know there’s Google Pay, Ads & Alibaba app. But trying to dig deeper than that here.

October 24, 2021 at 01:24AM by ponpbe
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New post on /r/flutterdev subreddit:

Flutter UI Dark Mode from Skeleton Template | App from Scratch Part 2
https://youtu.be/cmajuEW8RIc

October 24, 2021 at 01:23AM by Confident-Basket-896
https://ift.tt/3njYNEx

New post on /r/flutterdev subreddit:

Golden Testing and Builders before the RootAppWidget
Just what it says, getting RenderBox errors when I attempt to provide a RootAppWidget to the widget under test during goldens.​Workaround is to make the MyApp stateful, just wondering why its happening

October 24, 2021 at 01:17AM by fredgrott
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New post on /r/flutterdev subreddit:

Full stack graph tutorials?
Does anyone have good resources of full stack grpc with flutter? I have taken few courses on udemy but had difficult understanding as those courses won't show end to end integration. I have tried the official grpc site but being an below average developer I find it extremely difficult to wrap my head around it. There are tons of Graphql tutorial but looks like not enough good resources on Full stack grpc. I am ok with any language for the backend as long as it shows integration with front end as well.

October 24, 2021 at 05:56AM by BraveEvidence
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New post on /r/flutterdev subreddit:

Steve Yegge on Flutter
https://youtu.be/gSq58my05nY

October 24, 2021 at 06:47AM by skippednote
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New post on /r/flutterdev subreddit:

navigation_drawer_menu | Flutter Package
https://ift.tt/3CeJt28

October 24, 2021 at 06:30AM by emanresu_2017
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New post on /r/flutterdev subreddit:

Flutter Multiple Category Selection | Select Category Using Map Where() ...
https://youtube.com/watch?v=-0L-1UxVk3Y&feature=share

October 24, 2021 at 07:25AM by DBestech
https://ift.tt/2ZooHin

New post on /r/flutterdev subreddit:

Isolates for repeating background work
Everybody knows there's the nice compute function which is good for performing 1-time heavy operations in the background (like parsing large JSON).But what about some repeating background work?
For example, I have a large set of data (10K items) and I want to run fuzzy searches to select specific items from time to time. Calling compute each time would be a bad idea because it would mean copying the 10K items again and again.I couldn't find a good solution so I made a class encapsulating an Isolate, which:Sends the 10K items to the Isolate on the startKeeps the Isolate runningWhen the user performs fuzzy search, the requested String is sent to the IsolateThe background Isolate then performs a search and returns results back to the main IsolateIt felt a bit strange to manually use all the SendPort and ReceivePort, I felt like there must be an existing solution to perform repeating actions on single large data set, but I couldn't find any library or any function in the SDK.Are there any?

October 24, 2021 at 09:19AM by submergedmole
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New post on /r/flutterdev subreddit:

Who knows FinTech startups making apps with Flutter ?
I am wandering what kind of inApp protection or RASP they use if any to avoid cloning and assets & key protection.

October 24, 2021 at 01:04PM by sergeychuk
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New post on /r/flutterdev subreddit:

Cache API Integration with HydratedBLoC in Flutter
​Cache API Integration with HydratedBLoC in FlutterSource Codes IncludedMedium Story Link: https://medium.com/@CodingWithImran/cache-api-integration-with-hydratedbloc-in-flutter-fc51fae29b1f

October 24, 2021 at 01:03PM by imran_sefat
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