How to use HighCharts dart library in Flutter app?

I'm looking into using HighCharts Dart library to build visualisation for my flutter app. Base on the example here, I'm not too sure how to integrate it into the flutter app. After looking around, it seems like there isn't chart library for flutter...
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2017-10-16 04:10 (0) Answers

Custom Validator for MaterialInputComponent

I am currently working on Angular Dart (Version 4.0.0) and would like to validate a form. For this I need a Custom Validator for two MaterialInputComponents whose values depend on each other. Can someone give me a short example or a link where I can ...
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2017-10-15 12:10 (0) Answers

Using WebSockets in Angular Dart

I'm trying to connect a websocket in Dart: @Injectable() class Sock { ... Future<WebSocket> connect() async { return WebSocket.connect("ws://...."); } } As soon as I call connect(), I'm seeing an error which seems unr...
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2017-10-14 17:10 (1) Answers

Disable auto plaintext-only on iOS devices

I have very strange bug. On iOS devices I can't edit my some input fields. I check code and on iOS auto add strange code part into my input. <input type="password"> #document-fragment <div contenteditable="plainttext-only"></di...
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2017-10-14 17:10 (0) Answers

Flutter Nested Widget Callback/Async Questions

From a Flutter issue posted by Yueh Chou: Not sure if the event will bubble up to the parent widget and trigger the animation with all the nested widgets and callbacks. In the Original files, Pressing on a grandchild widget(e.g. FlatB...
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2017-10-13 17:10 (1) Answers

Error: '_elements.contains(element)': is not true

I am seeing this error '_elements.contains(element)': is not true.for the past two days in my flutter project, this was working absolutely fine since the beginning. I am sorry to say this but I have no clue regarding this error but i think i am missi...
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2017-10-13 13:10 (2) Answers

How to chain multiple controller/animation?

Issue I made an ellipse loading animation inside of flutter, but had to use a Timer on all three different controllers. (See example below...) Is there any widget that can help chaining three different animations? I tried using Interval Widget fo...
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2017-10-13 01:10 (1) Answers

Can somebody explain this Dart syntax

class TapboxA extends StatefulWidget { TapboxA({Key key}) : super(key: key); } This part : "TapboxA({Key key})" The second half "super(key: key);" .... I understand, (a call to super class constructor). But what is the "{Key key}" syntax doing?...
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2017-10-12 22:10 (1) Answers

flutter hero ease in and out?

Is there a way to control the ease in, ease out and duration the Hero Widget Animation? I look into the Hero Widget, which takes a tag, CreateRectTween and a child. const Hero({ Key key, @required Object tag, CreateRectTween createRectTwe...
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2017-10-11 18:10 (0) Answers

Display Firebase database list with Angular Dart

Here is an image for list of firebase data, I am trying to display in my angularDart project with the help of following two articles 1)https://qiita.com/tatsu/items/91bf9b01fd3e5d55cd09 2)https://dart.academy/build-a-real-time-chat-web-app-with-dart-...
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2017-10-10 13:10 (1) Answers

Swipe List Item for more options (Flutter)

Somedays ago I decided to choose an Ui for an app from Pinterest to practice building apps with Flutter but I'm stuck with the Slider which shows an "more" and "delete" button on horizontal drag. Picture on the right. I don't have enough knowledge t...
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2017-10-09 19:10 (1) Answers

Make flutter application fullscreen

How can I make a flutter application fullscreen. I already found out how to hide the status bar Hide Android Status Bar On Flutter App. but I can't seem to find how to hide the android navigation bar. ...
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2017-10-09 08:10 (2) Answers

How to create rating star bar properly?

I am trying to create a star bar for user ratings, the following image is from the play store to illustrate what I am trying to achieve: I have been able to achieve the following, which is functional as you can see, but when I look at my code, I f...
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2017-10-09 03:10 (2) Answers

Position widget in stack with percent

Let's say I want to position a widget inside a Stack but with a percent of the Stack position instead of a fixed size. How to do that in flutter ? I'd expect that the Positionned.fromRelativeRect constructor would be the thing, using floats between ...
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2017-10-09 01:10 (1) Answers

Flutter Firestore - Find `Document Snapshot` id

I hava simple app with list of products. Products are stored on Firebase Firestore. I want to download list of products and give user possibility to update some data. So I prepare list with products: Widget _buildProductsList() { return new Str...
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2017-10-08 20:10 (1) Answers

Appear/Add/Leave animations on flutter

I'm trying to animate a widget (or a list of widget) depending on it's life cycle. Something that allows to have an animation when the widget appears for the first time on screen ; when it's edited ; and when it leaves the screen. While I know how ...
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2017-10-08 16:10 (0) Answers

IntelliJ doesn't recognize flutter plugin

I wanted to try out flutter with IntelliJ, so I followed the order of https://flutter.io/setup-macos/ and everything worked out. But today, out of nowhere, it doesn't work anymore. I can run my code, but reload and hot reload is disabled. So I'd have...
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2017-10-08 01:10 (1) Answers

Can an AnimatedContainer animate its height?

I'd like to animate a gap between two items in a list. I thought of using an AminatedContainer with a height initially at zero but I'm not familiar with how to make this work. My code at the moment is: new AnimatedContainer( duration: co...
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2017-10-07 23:10 (2) Answers

Get all from a Firestore collection in Flutter

I set up Firestore in my project. I created new collection named categories. In this collection I created three documents with uniq id. Now I want to get this collection in my Flutter application so I created CollectionReference: Firestore.instance....
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2017-10-06 19:10 (1) Answers

how to use collation with mongodb and dart?

I need to make insensitive sorting in a find command within mongodb. It is possible with mongodb >= 3.4 using the collation method: db.myCollection.find({city: "new york"}).collation({locale: "en", strength: 2}) https://jira.mongodb.org/browse/SE...
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2017-10-05 23:10 (0) Answers