Flutter 1 20 4
Author: s | 2025-04-24
Part I: Introduction to Flutter 1 Chapter 1: Hello Flutter 3 Chapter 2: Developing in Flutter 9 Part II: Foundational Flutter 29 Chapter 3: Everything Is Widgets 31 Chapter 4: Value
What is 1/4 of 20? (Calculate 1/4 of 20) - Visual Fractions
Download Flutter 3.29.0 Date released: 13 Feb 2025 (one month ago) Download Flutter 3.24.0 Date released: 07 Aug 2024 (7 months ago) Download Flutter 3.16.2 Date released: 01 Dec 2023 (one year ago) Download Flutter 3.16.0 Date released: 16 Nov 2023 (one year ago) Download Flutter 3.13.0 Date released: 17 Aug 2023 (one year ago) Download Flutter 3.10.3 Date released: 03 Jun 2023 (one year ago) Download Flutter 3.10.0 Date released: 11 May 2023 (one year ago) Download Flutter 3.7.7 Date released: 14 Mar 2023 (2 years ago) Download Flutter 3.7.0 Date released: 31 Jan 2023 (2 years ago) Download Flutter 3.3.0 Date released: 31 Aug 2022 (3 years ago) Download Flutter 2.10.4 Date released: 06 Apr 2022 (3 years ago) Download Flutter 2.10.0 Date released: 04 Feb 2022 (3 years ago) Download Flutter 2.8.0 Date released: 17 Dec 2021 (3 years ago) Download Flutter 2.5.0 Date released: 09 Sep 2021 (4 years ago) Download Flutter 2.2.3 Date released: 02 Jul 2021 (4 years ago) Download Flutter 2.2.0 Date released: 19 May 2021 (4 years ago) Download Flutter 2.0.0 Date released: 04 Mar 2021 (4 years ago) Download Flutter 1.22.4 Date released: 20 Nov 2020 (4 years ago) Download Flutter 1.22.2 Date released: 23 Oct 2020 (4 years ago) Download Flutter 1.22.0 Date released: 02 Oct 2020 (4 years ago). Part I: Introduction to Flutter 1 Chapter 1: Hello Flutter 3 Chapter 2: Developing in Flutter 9 Part II: Foundational Flutter 29 Chapter 3: Everything Is Widgets 31 Chapter 4: Value Crashed: io.flutter.1.io 0 libsystem_kernel.dylib 0x1cbed8414 __pthread_kill 8 1 libsystem_pthread.dylib 0x1e9932b40 pthread_kill 272 2 libsystem_c.dylib 0x1a74feb74 abort 104 3 Flutter 0x101f9e6dc (Missing) 4 Flutter 0x1020aeea4 (Missing) 5 Flutter 0x101e43dbc (Missing) 6 Flutter 0x101e (Missing) 7 Flutter 0x101e (Missing) 8 Flutter 3.10 beta branch info Repo Branch Commit g3 CL flutter/flutter flutter-3.10-candidate.1 e749db6 cl/ flutter/engine flutter-3.10-candidate.1 flutter/engine@dc4fe90 N/A dart-lang/sdk 3.0.0-4 Skip to content. Navigation Menu Toggle navigation. Sign in Product Stop background activity flutter. 1. Is there a way by which we could run application in background in flutter? 0. Flutter app stay running while in background. 1. How to run flutter app in background continually? 4. In background flutter app works only for 1 minute after that it stops it's working, is Dart-Isolates good to try? 0. Crashed: io.flutter.1.io 0 Metal 0x1b8ebcdac -[MTLIOAccelCommandBuffer commandBufferResourceInfo] 12 1 AGXMetalA9 0x1dbe7b318 (Missing) 2 AGXMetalA9 0x1dbe0210c (Missing) 3 AGXMetalA9 0x1dbe0e084 (Missing) 4 Flutter 0x f134 (Missing) 5 Flutter 0x e4 (Missing) 6 Flutter 0x e84 (Missing) 7 Flutter 0x ae4 (Missing) 8 Flutter 0x a64 (Missing) 9 Flutter 0x f6f4 Changing the Flutter version is like changing git branch. if you want to change the channel use. flutter channel branch (example: flutter channel dev or flutter channel stable) There are four flutter Channels. 1). stable 2). dev 3). beta 4). master. You can further study about these channels from here. flutter downgrade version Here are 60 public repositories matching this topic... Code Issues Pull requests Voximplant mobile SDK for React Native (iOS/Android) Updated Dec 19, 2024 JavaScript Code Issues Pull requests React Native Voximplant Demo Updated May 7, 2024 JavaScript Code Issues Pull requests React native module to start foreground service on android Updated Jul 11, 2024 Java Code Issues Pull requests Usage of WebRTC for voice & video call with peer-to-peer or conference with Login and Register screen using response & Async storage with Call Dis/Connect, Failed and Idle views in react native. Youtube: Updated Jun 14, 2018 JavaScript Code Issues Pull requests Flutter SDK for CallKit integration to Flutter applications on iOS Updated Jun 17, 2022 Dart Code Issues Pull requests 1 on 1 web video chat application Updated Feb 11, 2022 JavaScript Code Issues Pull requests Evil Martians' telephony application that run our phone numbers Updated Feb 29, 2020 JavaScript Code Issues Pull requests Cloud PBX scripts for VoxImplant Updated May 20, 2020 JavaScript Code Issues Pull requests This demo shows the functionality of the Voximplant instant messaging SDK, including silent supervision by a bot. Updated May 19, 2022 TypeScript Code Issues Pull requests Manage Voximplant Platform `applications`, `rules` and `scenarios` from your own environment Updated Feb 21, 2025 TypeScript Code Issues Pull requests Complete videoconferencing application example Updated Feb 4, 2023 Vue Code Issues Pull requests Voximplant Flutter SDK demos Updated Mar 11, 2025 Dart Code Issues Pull requests Voximplant SDK for adding messaging, voice calling, video chat, and live streaming to Unity apps Updated Dec 15, 2020 C# Code Issues Pull requests Helper library for creating mkv files Updated Nov 20, 2015 C++ Code Issues Pull requests Voximplant Management API node.js client library Updated Mar 10, 2025 TypeScript Code Issues Pull requests Voximplant Web SDK demo apps UpdatedComments
Download Flutter 3.29.0 Date released: 13 Feb 2025 (one month ago) Download Flutter 3.24.0 Date released: 07 Aug 2024 (7 months ago) Download Flutter 3.16.2 Date released: 01 Dec 2023 (one year ago) Download Flutter 3.16.0 Date released: 16 Nov 2023 (one year ago) Download Flutter 3.13.0 Date released: 17 Aug 2023 (one year ago) Download Flutter 3.10.3 Date released: 03 Jun 2023 (one year ago) Download Flutter 3.10.0 Date released: 11 May 2023 (one year ago) Download Flutter 3.7.7 Date released: 14 Mar 2023 (2 years ago) Download Flutter 3.7.0 Date released: 31 Jan 2023 (2 years ago) Download Flutter 3.3.0 Date released: 31 Aug 2022 (3 years ago) Download Flutter 2.10.4 Date released: 06 Apr 2022 (3 years ago) Download Flutter 2.10.0 Date released: 04 Feb 2022 (3 years ago) Download Flutter 2.8.0 Date released: 17 Dec 2021 (3 years ago) Download Flutter 2.5.0 Date released: 09 Sep 2021 (4 years ago) Download Flutter 2.2.3 Date released: 02 Jul 2021 (4 years ago) Download Flutter 2.2.0 Date released: 19 May 2021 (4 years ago) Download Flutter 2.0.0 Date released: 04 Mar 2021 (4 years ago) Download Flutter 1.22.4 Date released: 20 Nov 2020 (4 years ago) Download Flutter 1.22.2 Date released: 23 Oct 2020 (4 years ago) Download Flutter 1.22.0 Date released: 02 Oct 2020 (4 years ago)
2025-04-20Here are 60 public repositories matching this topic... Code Issues Pull requests Voximplant mobile SDK for React Native (iOS/Android) Updated Dec 19, 2024 JavaScript Code Issues Pull requests React Native Voximplant Demo Updated May 7, 2024 JavaScript Code Issues Pull requests React native module to start foreground service on android Updated Jul 11, 2024 Java Code Issues Pull requests Usage of WebRTC for voice & video call with peer-to-peer or conference with Login and Register screen using response & Async storage with Call Dis/Connect, Failed and Idle views in react native. Youtube: Updated Jun 14, 2018 JavaScript Code Issues Pull requests Flutter SDK for CallKit integration to Flutter applications on iOS Updated Jun 17, 2022 Dart Code Issues Pull requests 1 on 1 web video chat application Updated Feb 11, 2022 JavaScript Code Issues Pull requests Evil Martians' telephony application that run our phone numbers Updated Feb 29, 2020 JavaScript Code Issues Pull requests Cloud PBX scripts for VoxImplant Updated May 20, 2020 JavaScript Code Issues Pull requests This demo shows the functionality of the Voximplant instant messaging SDK, including silent supervision by a bot. Updated May 19, 2022 TypeScript Code Issues Pull requests Manage Voximplant Platform `applications`, `rules` and `scenarios` from your own environment Updated Feb 21, 2025 TypeScript Code Issues Pull requests Complete videoconferencing application example Updated Feb 4, 2023 Vue Code Issues Pull requests Voximplant Flutter SDK demos Updated Mar 11, 2025 Dart Code Issues Pull requests Voximplant SDK for adding messaging, voice calling, video chat, and live streaming to Unity apps Updated Dec 15, 2020 C# Code Issues Pull requests Helper library for creating mkv files Updated Nov 20, 2015 C++ Code Issues Pull requests Voximplant Management API node.js client library Updated Mar 10, 2025 TypeScript Code Issues Pull requests Voximplant Web SDK demo apps Updated
2025-04-21#2 DeviceManager.findTargetDevices (package:flutter_tools/src/device.dart:294:37) #3 FlutterCommand.findAllTargetDevices(package:flutter_tools/src/runner/flutter_command.dart:1193:28) #4 RunCommand.validateCommand (package:flutter_tools/src/commands/run.dart:440:15) #5 FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:1114:5) #6 FlutterCommand.run.(package:flutter_tools/src/runner/flutter_command.dart:1009:27) #7 AppContext.run. (package:flutter_tools/src/base/context.dart:150:19) #8 AppContext.run (package:flutter_tools/src/base/context.dart:149:12) #9 CommandRunner.runCommand (package:args/command_runner.dart:197:13) #10 FlutterCommandRunner.runCommand. (package:flutter_tools/src/runner/flutter_command_runner.dart:278:9) #11 AppContext.run. (package:flutter_tools/src/base/context.dart:150:19) #12 AppContext.run (package:flutter_tools/src/base/context.dart:149:12) #13 FlutterCommandRunner.runCommand(package:flutter_tools/src/runner/flutter_command_runner.dart:234:5) #14 run.. (package:flutter_tools/runner.dart:64:9) #15 run. (package:flutter_tools/runner.dart:62:12) #16 AppContext.run. (package:flutter_tools/src/base/context.dart:150:19) #17 AppContext.run (package:flutter_tools/src/base/context.dart:149:12) #18 runInContext (package:flutter_tools/src/context_runner.dart:73:10) #19 main (package:flutter_tools/executable.dart:90:3) [ +264 ms] ensureAnalyticsSent: 256ms[ +5 ms] Running shutdown hooks[ +2 ms] Shutdown hooks complete[ +4 ms] exiting with code 1">flutter run --verbose[ +119 ms] executing: [/Users/dhirooverma/flutter/] git -c log.showSignature=false log -n 1 --pretty=format:%H[ +91 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H[ +3 ms] 8962f6dc68ec8e2206ac2fa874da4a453856c7d3[ +1 ms] executing: [/Users/dhirooverma/flutter/] git tag --points-at 8962f6dc68ec8e2206ac2fa874da4a453856c7d3[ +121 ms] Exit code 0 from: git tag --points-at 8962f6dc68ec8e2206ac2fa874da4a453856c7d3[ ] 2.0.2[ +76 ms] executing: [/Users/dhirooverma/flutter/] git rev-parse --abbrev-ref --symbolic @{u}[ +20 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}[ ] origin/stable[ ] executing: [/Users/dhirooverma/flutter/] git ls-remote --get-url origin[ +21 ms] Exit code 0 from: git ls-remote --get-url origin[ ] +96 ms] executing: [/Users/dhirooverma/flutter/] git rev-parse --abbrev-ref HEAD[ +29 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD[ ] stable[ +13 ms] executing: sw_vers -productName[ +56 ms] Exit code 0 from: sw_vers -productName[ ] Mac OS X[ ] executing: sw_vers -productVersion[ +34 ms] Exit code 0 from: sw_vers -productVersion[ ] 10.15.6[ ] executing: sw_vers -buildVersion[ +27 ms] Exit code 0 from: sw_vers -buildVersion[ +2 ms] 19G73[ +31 ms] executing: sysctl hw.optional.arm64[ +9 ms] Exit code 1 from: sysctl hw.optional.arm64[ ] sysctl: unknown oid 'hw.optional.arm64'[ +238 ms] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.[ ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.[ +1 ms] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.[ ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.[ +10 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.[ ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.[ +1 ms] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.[ ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.[ ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.[ ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.[ ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.[ +172 ms] executing: /Users/dhirooverma/Library/Android/sdk/platform-tools/adb devices -l[ +33 ms] executing: /usr/bin/xcode-select --print-path[ +17 ms] Exit code 0 from: /usr/bin/xcode-select --print-path[ ] /Applications/Xcode.app/Contents/Developer[ +13 ms] executing: sysctl hw.optional.arm64[ +9 ms] Exit code 1 from: sysctl hw.optional.arm64[ +4 ms] sysctl: unknown oid 'hw.optional.arm64'[ ] executing: xcrun xcodebuild -version[+1344 ms] Exit code 0 from: xcrun xcodebuild -version[ ] Xcode 12.4 Build version 12D4e[ +6 ms] executing: xcrun xcdevice list --timeout 2[ +7 ms] xcrun simctl list --json devices[ ] executing: xcrun simctl list --json devices[ +83 ms] List of devices attached 4dc08af00805 device usb:336592896X product:sakura_india
2025-04-02General Example Prepare environment # Install Flutter SDK and setup your environment Add our flutter package # To add the barkoder_flutter package to your project, you have two options. You can either use the barkoder_flutter package from pub.dev or from a local path. To use the package from pub.dev, add the package name and version to your project's dependencies: dependencies: flutter: sdk: flutter barkoder_flutter: If you prefer to use a local package, download the package from and set the package path in your project's dependencies: dependencies: flutter: sdk: flutter barkoder_flutter: path: Install dependencies # Run flutter pub get command in terminal to install the specified dependencies in your project Create a new widget lib/barkoder_flutter.dart and add the following code: import 'package:flutter/material.dart';import 'package:barkoder_flutter/barkoder_flutter.dart';class BarcodeScanner extends StatefulWidget { @override _BarcodeScannerState createState() => _BarcodeScannerState();}class _BarcodeScannerState extends State { Barkoder? _barkoder; String? scannedResult; bool isScanning = false; void _onBarkoderViewCreated(Barkoder barkoder) { _barkoder = barkoder; _barkoder!.setRegionOfInterestVisible(true); _barkoder!.setRegionOfInterest(5, 5, 90, 90); _barkoder!.setCloseSessionOnResultEnabled(false); _barkoder!.setImageResultEnabled(true); _barkoder!.setBarcodeThumbnailOnResultEnabled(true); _barkoder!.setBeepOnSuccessEnabled(true); _barkoder!.setPinchToZoomEnabled(true); _barkoder!.setZoomFactor(2.0); // Enable the barcode types and add others if you need _barkoder!.setBarcodeTypeEnabled(BarcodeType.code128, true); _barkoder!.setBarcodeTypeEnabled(BarcodeType.code39, true); _barkoder!.setBarcodeTypeEnabled(BarcodeType.ean13, true); } void _startScanning() { setState(() { scannedResult = null; isScanning = true; }); _barkoder!.startScanning((result) { setState(() { scannedResult = result.textualData; isScanning = false; }); }); } void _stopScanning() { _barkoder!.stopScanning(); setState(() { isScanning = false; });} @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar(title: Text('Barcode Scanner')), body: Column( children: [ Expanded( child: BarkoderView( licenseKey: 'ADD_YOUR_LICENSE_KEY_HERE', onBarkoderViewCreated: _onBarkoderViewCreated, ), ), if (scannedResult != null) Padding( padding: const EdgeInsets.all(16.0), child: Column( children: [ Text('Result: $scannedResult'), // Here you can add more details like barcode type, or display the thumbnail ], ), ), Padding( padding: const EdgeInsets.all(16.0), child: Row( mainAxisAlignment: MainAxisAlignment.spaceAround, children: [ ElevatedButton( onPressed: isScanning ? null : _startScanning, child: Text('Start Scanning'), ), ElevatedButton( onPressed: isScanning ? _stopScanning : null, child: Text('Stop Scanning'), ), ], ), ), ], ), ); }} Adding to Your Main App # Make sure to add this widget to your app’s navigation or replace the main screen with it. Below is an example of how you might include this in a simple Flutter app: import 'package:flutter/material.dart';import 'barcode_scanner.dart'; // Adjust the path as necessaryvoid main() { runApp(MyApp());}class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Barcode Scanner', theme: ThemeData( primarySwatch: Colors.blue, ), home: BarcodeScanner(), ); }} Run the App # Run your Flutter app using flutter run Minimum SDK # The plugin requires a minimum SDK version of 21, but your Flutter project's Android SDK version is set to 20 or lower, you'll need to update the minSdkVersion in your build.gradle file to at least 21: android { compileSdkVersion 33 defaultConfig { applicationId "com.example.my_flutter_app" minSdkVersion 21 // Updated from 19 to 21 targetSdkVersion 33 versionCode 1 versionName "1.0" multiDexEnabled true } ...}
2025-04-14I'm using new null-safety feature with dart and had a problem with build_runner. Error: Operator '[]' cannot be called on 'ArgResults?' because it is potentially null. - 'ArgResults' is from 'package:args/src/arg_results.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/args-2.0.0/lib/src/arg_results.dart'). var verbose = parsedArgs.command['verbose'] as bool ?? false;and' which excludes null. - 'StreamSubscription' is from 'dart:async'. await logListener?.cancel();">Failed to precompile build_runner:build_runner:/c:/flutter/.pub-cache/hosted/pub.dartlang.org/build_runner-1.12.1/bin/build_runner.dart:101:9: Warning: Operand of null-aware operation '?.' has type 'StreamSubscription' which excludes null. - 'StreamSubscription' is from 'dart:async'. await logListener?.cancel();Fixed both of them, hence PR. But of course I still gotError: Cannot run with sound null safety, because the following dependenciesdon't support null safety: - package:build_runner_core - package:io - package:build_runner - package:build_config - package:build_daemon - package:timing - package:code_builder - package:dart_style - package:http_multi_server - package:shelf_web_socket - package:web_socket_channelTried to run flutter pub run build_runner build --no-sound-null-safety, it had no effect.Solution!!!The only thing that helped is manually insert // @dart=2.9 at the beginning of bin/build_runner.dart, after that builder is working.Should we just include // @dart=2.9 at the beginning of bin/build_runner.dart, so you at least don't see this problem untill null-safety is fully supported?- Flutter version 2.0.2 at C:\flutter- Framework revision 8962f6dc68 (2 days ago), 2021-03-11 13:22:20 -0800- Engine revision 5d8bf811b3- Dart version 2.12.1- What package(s) from this repo you are using: **build_runner 1.11.5**, **build_runner 1.12.1** and master- What builder(s) you are using: **freezed 0.14.0+1**, but without any builders it fails the same- Whether you are using? Windows
2025-04-18