New post on Flutter Dev Google group:

Problem with pagination (SilverList + ListView.builder)
Hi guys, I am facing some issue with the silver list + ListView.builder. The idea is to build the list view as SilverList as it is needed for the SilverStickyHeader. When the user scrolls to the end (position), the next page of the list will be loaded. somehow this kind of code works without

October 15, 2019 at 07:30AM by Zhe Xiao
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New post on /r/flutterdev subreddit:

About Flutter meetup suggestion at Bangalore, India
Hey everyone Flutter is taking over in development, So are love to build an app on Flutter or would like to give a try with Flutter and have an idea then let us know in comment section so we can arrange one meetup and our dev team will publish a public open-source code on GitHub and as well as on our website at https://www.ionicfirebaseapp.com/products/category/FreeSo you can go ahead with easy development with Flutter.#flutter #flutterdev #fluttermeetup #meetup

October 15, 2019 at 11:23AM by ionicfirebaseapp
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New post on Flutter Dev Google group:

plugin dependency only for specific platform?
Hey, is it possible to include a dependency only for a sepcific platform? I am developing a cross-plattform app fro macOS and iOS and are using the shared_preferences plugin. in pubspec.yaml I added this: shared_preferences: ^0.5.3+4 shared_preferences_fde: path: ../../flutter-desk

October 15, 2019 at 12:22PM by Thomas Verbeek
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New post on /r/flutterdev subreddit:

Hybrid App
Hi, I am going to be creating an app for my final year project and I plan on using flutter with a firestore database behind it. It will be a recipe app. I have not decieded whether I will develop it for both Android and/or iOS. I just wanted to know whether hybrid development is time consuming or too difficult? I don't want to have it in my project plan and then struggle to implement it and get marked down.​Thanks for any advice or guidance looking forward to creating my first flutter app!

October 15, 2019 at 01:18PM by fmcd97
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New post on /r/flutterdev subreddit:

Any gRPC with Flutter tutorials?
I read some articles but couldn't get grpc to work. Any tutorials that you recommend ?

October 15, 2019 at 03:47PM by bimsina
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New post on /r/flutterdev subreddit:

Increase and decrease the font size of user input (TextField)
Hello guys, I am trying to code an app, in which a TextField has a set size, given by a SizedBox around it. As the user types, the text should shrink form the initial font size to whatever size is necessary to fit in the box, so that everything typed is visible, without having to scroll.I have been trying for a while, with no success. I am fairly new to Flutter/Dart so any help would be appreciated. I would also settle for two buttons that increase/decrease the text font size typed in the TextField, so the user does that manually.I have looked into the auto_text_size package, but if you think this could work, please provide a full example because I tried it but every example of this package I could find cannot be use with user input text.Can anyone help me?

October 15, 2019 at 03:16PM by JustyDonutd
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New post on /r/flutterdev subreddit:

A Flutter package implements a convex BottomAppBar
https://ift.tt/2VI2buy

October 15, 2019 at 05:26PM by heshanfu
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New post on /r/flutterdev subreddit:

Control a page in pageview using a slider as a controller in Flutter
I'm thinking of making an app which has a basic pageview with a controller. I want to pass the controller to a Slider widget and If I move the slider, the corresponding value of the page should be visible. Any ideas to implement it? I have attached the code as gist.​https://gist.github.com/Imgkl/0aac4076fbcfd12b58896e67c3841a91

October 15, 2019 at 05:15PM by chif_
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New post on /r/flutterdev subreddit:

Help with BLE beacon and scanning
I've been struggling with this for more than a week and really need help. I am new to Flutter, BLE and beacons so please be patient.I am trying to create a system using Flutter where one device acts as a BLE beacon and the other acts as a scanner. Each device will have its own app.I managed to do the first part using https://pub.dev/packages/beacon_broadcast library and the example code that I found on github. My android device is broadcasting as a Altbeacon beacon and I can use apps from the Appstore to detect it.For the second part I've been trying to use https://pub.dev/packages/flutter_blue. I tried copying the example code and running it but there are 2 problems that I cannot understand.First, nothing shows up when I try to scan on my Android device. I don't understand why. Stuff shows up when I build and run on iOS device but not on Android.Second, it does not seem to detect the Altbeacon device.Any ideas?

October 15, 2019 at 05:08PM by nprogrammer
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New post on /r/flutterdev subreddit:

Flutter “App keeps stopping” message when I try to open it in landscape mode
I'm currently trying to force the app to be always used in portrait mode through the following code:

Future main() async { await DotEnv().load('.env'); await SystemChrome.setPreferredOrientations([ DeviceOrientation.portraitUp, DeviceOrientation.portraitDown, ]); runApp( HomePage() ); } 

When I open the App with the tablet already in portrait it works perfectly but if I close the App, turn the tablet to landscape and try to open it again the message "App keeps stopping" is show and the App wont open until I use the tablet in portrait mode again. It does not throw any exception or error in the terminal when the message is shown and the same error happens both in the emulator as in a real device.How do I make it possible for the App to open and be used in portrait mode without prohibiting the user from opening it with the tablet in landscape mode? Or at least, how do I prevent this message from being shown?

October 15, 2019 at 06:16PM by Octarine_
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New post on /r/flutterdev subreddit:

Flutter Nike Store App UI Concept - Speed Code
https://youtu.be/cQ87mfqzx_E

October 15, 2019 at 07:09PM by EngineerScientist
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New post on /r/flutterdev subreddit:

I would send Starbucks gift cards if anyone can show me a Twilio Video implementation in Flutter...
Can't seem to find one anywhere, just some sms ones, but I need Video :(

October 15, 2019 at 06:54PM by TrentRamseyer
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New post on /r/flutterdev subreddit:

2FA
Have someone implemented a 2FA with flutter? Like twitter, instagram or facebook has. When you login (if you have this option active) the app will ask you the 2FA code.

October 15, 2019 at 07:57PM by saulmestanza
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New post on /r/flutterdev subreddit:

Widget rebuild when nested provider state
Hi guys,
I am new to flutter and provider and I am stuck with a problem. I have build a simple counter app that demonstrates the issue.There is an inner widget (counter) nested in an outer widget (wrapper). On the level of the outer widget I define a ChangeNotifierProvider with a state class (with ChangeNotifier) called outer (wrapper state). Inside the state outer I define another state (counter state, also with ChangeNotifier) called inner as a variable.The idea is, that the counter changes the counter state inside of the wrapper state. An example for this use case could be that there is a wrapper page with multiple counters and I want to access all counter values on the wrapper level.The problem is, that the code below updates the variable, but the widget isn't rebuild, even though I used notifyListeners(). If you hit the "+1" button, nothing happens, but when hot-reload kicks in (triggered by saving), the counter value is updated to its new value.``` import 'package:flutter/material.dart'; import 'package:provider/provider.dart';void main() => runApp(MyApp());class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { print("Build App"); return MaterialApp( title: 'Flutter Demo', theme: ThemeData( primarySwatch: Colors.blue, ), home: Scaffold( appBar: AppBar( title: Text("Counter"), ), body: OuterWidget()), ); } }class OuterWidget extends StatelessWidget { @override Widget build(BuildContext context) { print("Build Outer"); return ChangeNotifierProvider( builder: (context) => Outer(), child: InnerWidget(), ); } }class InnerWidget extends StatelessWidget { @override Widget build(BuildContext context) { print("Build Inner"); var _outer = Provider.of<Outer>(context); var _inner = _outer.inner; return Column( children: <Widget>[ Text(_inner.counter.toString()), RaisedButton( onPressed: () { _inner.increase(); print(_outer.inner.counter); }, child: Text("+1")) ], ); } }class Outer with ChangeNotifier { Inner _inner = Inner();Inner get inner => _inner; }class Inner with ChangeNotifier { int _counter = 0;int get counter => _counter;void increase() { _counter++; notifyListeners(); } } ```Can you guys help me with this problem?

October 15, 2019 at 08:41PM by le_crosst
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New post on /r/flutterdev subreddit:

Detect Navigation events/page changes?
I want to display ads on certain pages in my app. When a user navigate away to a page, that shouldn't display ads, I want to hide them.For this reason, I need to detect navigation/page changes because it wouldn't make sense to call ad.dispose() after every Navigator.push() or Navigator.pop() call.Is this possible in flutter? I haven't found a way to do so, any ideas?

October 15, 2019 at 08:36PM by jwknows
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New post on /r/flutterdev subreddit:

ListView Builder Scroll to index?
Hi i was just wondering if anyone has come across a good solution to scrolling to a specific index in a listview builder? In iOS it is pretty standard to scrollToRowAtIndexPath in tableviews and seems like pretty basic functionality and was surprised this wasn't supported. I found this issue on github https://github.com/flutter/flutter/issues/12319 . Has anyone come up with a good work around for this?

October 16, 2019 at 01:09AM by bigBearRat
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New post on /r/flutterdev subreddit:

dart/flutter <=> xcode / ios SDK compatibility
is there a website/list that aligns which versions of dart/flutter are compatible with which versions of xcode/ios SDK?of course i know you should always use the "latest" version (and the app stores even have requirements around what they will accept), but it would be helpful to have it spelled out and written down.i've seen something like this in a press release that explains it (dart 2.5 supporting ios13), but nothing that lists different versions/histories/etc...https://venturebeat.com/2019/09/10/google-launches-dart-2-5-with-intelligent-code-completion-flutter-1-9-with-ios-13-and-macos-catalina-support/would probably be helpful for android SDK too, but maybe that's more obvious (haven't looked into it exactly yet).thanks!

October 16, 2019 at 01:07AM by pickleback11
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New post on /r/flutterdev subreddit:

Android studio isn't placing a trailing comma
I'm on MAC,When I hit the ( keythe android studio automated types it as ()on the tutorial videos I learn from, whenever the instructor hits the ( key, the android studio types it as (),I couldn't figure out why I'm having this issue and android studio settings are far beyond my understanding.

October 16, 2019 at 02:24AM by Rokett
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New post on /r/flutterdev subreddit:

ListView Navigation
Hello everyone, how can I add a navigation route to each tile of the ExpansionTile, someone can help me?In the subtitles I want to add the navigation routes.

List<MyTile> listOfTiles = <MyTile>[ MyTile('El Triangulador', <MyTile>[ MyTile('● Definición'), MyTile('● Personas que intervienen'), MyTile('● Actitudes sanas para resolver'), ]), MyTile('El Frustrador', <MyTile>[ MyTile('● Definición'), MyTile('● Rasgos'), MyTile('● Actitudes frente a la frustración'), MyTile('● Criando hijos sanos'), ]), ] class ListViewHome extends StatelessWidget { @override Widget build(BuildContext context) { // TODO: implement build return ListView.builder( itemCount: listOfTiles.length, itemBuilder: (context, int index) { return StuffInTiles(listOfTiles[index]); }, ); } } class StuffInTiles extends StatelessWidget { final MyTile myTile; StuffInTiles(this.myTile); @override Widget build(BuildContext context) { // TODO: implement build return _buildTiles(myTile); } ///Second Heads Widget _buildTiles(MyTile t) { if (t.children.isEmpty) { return ListTile( title: Text( t.title, textScaleFactor: 1.2, style: listViewHome, ), ); } ///First Head return ExpansionTile( key: PageStorageKey<MyTile>(t), title: Text( t.title, textScaleFactor: 1.5, style: listViewHome, ), leading: CircleAvatar( backgroundColor: Colors.white, backgroundImage: AssetImage('assets/icons/toxic.png'), ), children: t.children.map(_buildTiles).toList(), ); } } class MyTile { String title; List<MyTile> children; MyTile(this.title, [this.children = const <MyTile>[]]); } 

October 16, 2019 at 04:28AM by tutegomeze
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New post on /r/flutterdev subreddit:

Firebase App Distribution with Codemagic
https://ift.tt/2MXsZTR

October 16, 2019 at 08:50AM by Gigatronbot
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New post on /r/flutterdev subreddit:

Flutter Design Patterns: An overview of Singleton design pattern and its implementation in Dart and Flutter
https://ift.tt/2oKL67e

October 16, 2019 at 08:32AM by mkobuolys
https://ift.tt/2VL7RUu