New post on /r/flutterdev subreddit:

The imported library 'package:geolocator/model/position.dart' can't have a part-of directive
http://bit.ly/2sQdiEe

January 30, 2019 at 04:57AM by vutka_bilai
http://bit.ly/2MFlFvp

New post on /r/flutterdev subreddit:

Flutter State Management has Never Been Easier. Think Statelessly then add Reactivity
http://bit.ly/2sURLu2

January 30, 2019 at 06:13AM by MainaWycliffe
http://bit.ly/2WwemLd

New post on Flutter Dev Google group:

How can i upload file to server
How can i upload audio file to server. Thanks in advance

January 30, 2019 at 06:09AM by Harish Challa
http://bit.ly/2HFlPnG

New post on /r/flutterdev subreddit:

Which is the best way to use bloc architecture pattern with your flutter app
Is it better to use with the flutter library flutter_bloc and bloc or better to use with the rxdart package?

January 30, 2019 at 07:55AM by KrishnakumarCN
http://bit.ly/2RZHGec

New post on /r/flutterdev subreddit:

Anyone facing performance issues in VS Code when developing?
I've been using VS Code and the flutter plugin to develop and test my app on a real device plugged in via USB. I've been running into an issue where everything is fine when I first run the app however after about 30/40 mins of use whenever I make a change and hot reload VS Code hangs for a couple seconds before continuing. I've also noticed it happens whenever my device state changes such as when my device falls asleep, VS Code freezes for a few seconds before the debug console updates. If I end the build and run it again it works normally again for a while before reoccurring.Is this some sort of bug or is it just my laptop not being powerful enough? For reference my laptop has an I3 7100U, 8gb Ram and an SSD.

January 30, 2019 at 12:22PM by FriedChicken24
http://bit.ly/2WCPoK6

New post on /r/flutterdev subreddit:

Angular or React when coming from Flutter?
Hey, I'm decent at Flutter and Dart. Now I wanna make a web app to my native one.I really dig OOP and quite like Dart.From your experience, what am I better off transitioning to (what can I learn easier/faster)?

January 30, 2019 at 02:36PM by thisw4y
http://bit.ly/2Uvriz3

New post on /r/flutterdev subreddit:

Introduction to Dart for Beginners - Types, Variables, Functions and Objects - Part One
https://m.youtube.com/watch?feature=youtu.be&v=8F2uemqLwvE

January 30, 2019 at 02:11PM by Purple_Pizzazz
http://bit.ly/2DI3su5

New tweet from flutterio:

👂 We're all ears... 👂

We want to hear about your experience on Flutter. Will you tell us about it in this survey?

Take the survey here 👉 https://t.co/HfGbnj6l5E pic.twitter.com/V7yfJV6Jt1— Flutter (@flutterio) January 30, 2019

January 30, 2019 at 06:00PM
http://twitter.com/flutterio/status/1090655885221875712

New post on /r/flutterdev subreddit:

Help improve Flutter! Take our survey :)
Hello from the Flutter team (again)!​As we continue to improve Flutter, we want to make sure your feedback and thoughts are included.​Please take this survey to support us. This anonymous survey helps us plan our work in the coming quarters.Link: https://google.qualtrics.com/jfe/form/SV_bfowrKmM2DjD5tj?Source=Reddit​On behalf of the Flutter team, thank you!

January 30, 2019 at 06:25PM by janim27
http://bit.ly/2G84rpj

New post on /r/flutterdev subreddit:

Track app lifecycle (and check permissions on resume) in a few lines of code. Full source code in video description. Please subscribe my channel if you like it!
https://youtu.be/m_lDo-tcoBE

January 30, 2019 at 07:14PM by impatientdeveloper
http://bit.ly/2sXpQcW

New post on /r/flutterdev subreddit:

Modal Bottom Sheet as a Bottom Drawer - Tutorial
https://youtu.be/_y40_iamKAc

January 30, 2019 at 07:09PM by MRresoMC
http://bit.ly/2MG4ObM

New post on /r/flutterdev subreddit:

Flutter different onTap effects apart from Material ripple
Is there an alternative to the standart ripple effect?​I'm particularly looking for a spotify-like onTap effect where the tapped item would lose some opacity and shrink a little bit, instead of rendering the standart material ripple.​Like in the Reflectly app...

January 30, 2019 at 08:26PM by thisw4y
http://bit.ly/2Rsbafu

New post on Flutter Dev Google group:

Can i reuse my swift code and run in Android emulator ?
Hi, Im starting a new Flutter project since i must to support Android. Im using Flutter because dont want 2 separate codebase (iOS & Android) I have already coded my iOS appplication with Swift (Models, ViewModels, Managers, Utils, Extension, etc...) , but i have question But nothing with

January 30, 2019 at 09:45PM by Mathieu Grenier
http://bit.ly/2DIqBNl

New post on /r/flutterdev subreddit:

Flutter Animated Series : Animated Opacity
http://bit.ly/2sVMCBS

January 30, 2019 at 10:02PM by Elixane
http://bit.ly/2MHip2L

New post on /r/flutterdev subreddit:

<b>How to pass CountdownTimer to another widget</b>
Hi,I have a drawer menu in one widget, and I am starting countdowntimer (i need it, and it will count until zero) and also according to the user choice from drawer menu, user can go different widgets (i am setting body parameter of the WillPopScope of drawer's widget, according to the user choice).&#8203;One of the drawer menu's widget should show the counter, but when user goes to another widget and return, that widget show the proper timer. (I mean timer should work in background). But I couldn't do that, I am getting error when I navigate another widget via drawer:&#8203;<pre>E/flutter ( 9411): [ERROR:flutter/shell/common/shell.cc(184)] Dart Error: Unhandled exception: E/flutter ( 9411): setState() called after dispose(): ...#6c2be(lifecycle state: defunct, not mounted) E/flutter ( 9411): This error happens if you call setState() on a State object for a widget that no longer appears in the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error can occur when code calls setState() from a timer or an animation callback. The preferred solution is to cancel the timer or stop listening to the animation in the dispose() callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree. E/flutter ( 9411): This error might indicate a memory leak if setState() is being called because another object is retaining a reference to this State object after it has been removed from the tree. To avoid memory leaks, consider breaking the reference to this object during dispose(). </pre>&#8203;&#8203;Here is the drawer widget:&#8203;<pre>class _DrawerWidget extends State<UserDrawerMenuPage> { CountdownTimer _countdownTimer; CommonPropertySingleton _commonPropertySingleton; // this is singleton class to get countdowntimer in another widget setCountDownTimer(){ _countdownTimer = CountdownTimer(Duration(seconds: second),Duration(seconds: 1)); _commonPropertySingleton.assignCountdownTimerForQrCode(_countdownTimer); } @override void initState() { super.initState(); setCountDownTimer(); } @override Widget build(BuildContext context) { return WillPopScope( onWillPop: () => _exitApp(context), child: Scaffold( key: _scaffoldKey, appBar: AppBar( title: Text(Localization.of(context).getText(text: "userPage")) ), drawer: Drawer( child: ListView( padding: EdgeInsets.zero, children: <Widget>[ SizedBox(height: 80.0,), ListTile( title: Text(Localization.of(context).getText(text: 'home')), leading: Icon(Icons.home), onTap: () { setState(() { _selectedDrawerItem = 0; Navigator.of(context).pop(); _getDrawerContent(); }); }, ), ListTile( title: Text(Localization.of(context).getText(text: 'profile')), leading: Icon(Icons.person), onTap: () { setState(() { _selectedDrawerItem = 1; Navigator.of(context).pop(); _getDrawerContent(); }); }, ),// it goes like that .... body: _getDrawerContent(), } _getDrawerContent() { switch (_selectedDrawerItem){ case 0: return new SampleWidget(); case 1: return new SampleWidget2(); } } } </pre>&#8203;Here is the SampleWidget()<pre>class SampleWidget extends StatefulWidget { @override _QrCodeWidgetState createState() => _QrCodeWidgetState(); } class _QrCodeWidgetState extends State<QrCodeWidget> { String _log = "_QrCodeWidgetState"; CommonPropertySingleton _commonPropertySingleton; CountdownTimer _countdownTimer; _QrCodeWidgetState(){ print("$_log Constructor "); _commonPropertySingleton = CommonPropertySingleton(); _countdownTimer = _commonPropertySingleton.getCountDownTimer(); } @override void initState() { print("$_log initState"); super.initState(); getCountTimeTimerAsString(); } @override void dispose(){ super.dispose(); } @override Widget build(BuildContext context) { print("$_log build"); return ListView( children: <Widget>[ Text(timer) ], ); } getCountTimeTimerAsString() { if (this.mounted) { // &#305; tried mounted property…

New post on /r/flutterdev subreddit:

A fancy counter for a demo / intro to flutter animation
http://bit.ly/2CZH0uW

January 30, 2019 at 11:53PM by conxtantyn
http://bit.ly/2CPTLIo

New post on Flutter Dev Google group:

Android TV - Best Approach - RawKeyboardListener, or...?
Hi, trying to use flutter for Android TV - and it seems that the only way is to use RawKeyboardListener (http://bit.ly/2G04NiC) - going to be a decent amount of work to handle the arrow keys across multiple widgets, but it should work. Anyone has

January 31, 2019 at 01:55AM by Blue Einstein
http://bit.ly/2GcdsxB

New post on /r/flutterdev subreddit:

Flutter for web developers
https://youtu.be/lhyAMLmQuCI

January 31, 2019 at 02:01AM by abrahamwilliams
http://bit.ly/2RuJFlT

New post on /r/flutterdev subreddit:

Flavour in flutter.
using the link : https://medium.com/@salvatoregiordanoo/flavoring-flutter-392aaa875f36I am able to create flavour and/or targets for iOS in flutter but in this i am having multiple scheme and single targets . But i want multiple targets . For example - App1 is my first target with their Capabilties having background mode enable , and APP2 is another target with their capabilites having pushnotification enbale , icloud enable ,and background mode enable . Both in same project .How to implement that in flutter?

January 31, 2019 at 06:05AM by aashish-singh
http://bit.ly/2HDNsxr

New post on /r/flutterdev subreddit:

How to do Asynchronous Programming in Flutter with Dart
http://bit.ly/2RNcI91

January 31, 2019 at 06:38AM by Hena_Kabeer
http://bit.ly/2G0tifA