Today I’ll show you how to write testable code in Flutter, and take your widget tests to the next level. Coming from the world of iOS development, I use dependency injection and Swift protocols to write testable code. Why? So that my tests run faster, in isolation, and without side effects (no access to the network or filesystem).

So, what to do?

• Inject dependencies as abstract classes into your widgets.
• Instrument your tests with mocks and ensure they return immediately.
• Write your expectations against the widgets or your mocks.

test flutter

When you click “Shut Down” on your Windows 10 PC, Windows doesn’t fully shut down. It hibernates the kernel, saving its state so it can boot faster. If you’re experiencing computer problems and need to reset that state, you’ll need to restart your PC instead.

We’ve personally experienced this problem ourselves. When faced with weird system problems that may be caused by a buggy driver or other low-level software issues, the problem persisted after shutting down our PC and booting it back up.pc

Today, I’ll give some examples for creating forms in flutter. If you don’t know Flutter, you can start in here. The Flutter is a mobile SDK for creating mobile applications by fast. It can craft a application on iOS and Android devices with one code and this framework has full native performance!

A good news!

Flutter is in beta. Do not worry about beta because when Flutter in alpha, it used applications in production by Google. These applications downloaded and used by millions. Yes, Flutter is Google mobile UI Framework. Flutter using Dart language. It’s like Typescript or Javascript (my idea). And in the beta version, you can use Dart v2 in Flutter. I updated Flutter version in my computer using by this document. It’s easy.

Flutter has widgets for UI and we use Form and Field widgets today for creating a log in form. So first you need to look Flutter input widgets page. It has Form widget and FormField widget.news javascript typescript flutter

We are super excited to announce a fully-featured, animated charting library for Flutter!

Flutter enables developers to craft high-quality mobile app user interfaces for iOS and Android. Many of the Flutter apps being created internally at Google present large amounts of data. Doing that efficiently requires not just regular UI widgets, but lots of elegant charts. Back when we set out to create a Flutter charting library we quickly discovered that it was no easy feat. So it is with much joy that we are now able to announce the ‘Charts for Flutter’-library as open source, available for all Flutter apps. Checkout charts_flutter!flutter

Previously on Building WhatsApp with Flutter, we created a basic appbar with tabs and navigation. Today, we are going to create the scrolling list of chats using the ListView.builderflutter

Getting effective quickly

An awesome style list that curates the best Flutter libraries, tools, tutorials, articles and more.

Flutter is a mobile app SDK for building high-performance, high-fidelity, apps for iOS and Android, from a single codebase.

The goal is to enable developers to deliver high-performance apps that feel natural on different platforms. We embrace differences in scrolling behaviors, typography, icons, and more.

Contributions welcome. Add links through pull requests or create an issue to start a discussion.flutter

Fuchsia, a modular, capability-based operating system

This document is a collection of articles describing the Fuchsia operating system, organized around particular subsystems. Sections will be populated over time.

SharpKeys is a utility that manages a Registry key that allows Windows to remap one key to any other key. Included in the application is a list of common keyboard keys and a Type Key feature to automatically recognize most keyboard keys. It was originally developed in C# using .NET v2 but has been updated to support .NET 4.0 Client Profilemap

Flutter Challenge: Egg Timer (full code exercise)flutter

When building layouts for our Flutter applications, it’s important to understand how the framework handles the creation of these layouts.

Within Flutter, the visual components that you declare are widgets, as well as the layout elements also.The Flutter Framework builds its layout via the composition of widgets, everything that you construct programatically is a widget and these are compiled together to create the user interface.flutter

In the first two steps of this blog post series, we covered how to install Flutter to our system and how can we create views with the information that we retrieved from the server.

Now it is time for us to continue with the last part: Detail View creation and code cleanup.

Right now application only shows the name of the movie and the poster of it. But we are holding more information in our Movie object than these two. Let’s pass these information to a new view and use it.flutter

As stated in the previous blog post, we will be creating a movie application which shows the top-rated movies from TMDb database.

Let’s start by deleting everything in the main.dart file and create the famous “Hello World” application together to have some information about basics of the view hierarchy in Flutter.

Before we proceed with code, I want to tell you about views in Flutter. Each view element in Flutter is called widgets.

Widgets describe what their view should look like given their current configuration and state. A widget’s main job is to implement a build function, which describes the widget in terms of other, lower-level widgets. When writing an app, you’ll commonly author new widgets that are subclasses of either StatelessWidget or StatefulWidget, depending on whether your widget manages any state. When a widget’s state changes, the widget rebuilds its description, which the framework diffs against the previous description in order to determine the minimal changes needed in the underlying render tree to transition from one state to the next. That will be enough for now.flutter

Over the three months or so since I joined the Flutter team, I’ve been trying to find as much hands-on time as possible to get familiar with the framework. Inevitably that leads to a GitHub account full of half-baked experiments that have helped me play around with various concepts but aren’t of much use to anyone.

About a month ago, Matan Luray, one of the amazing software engineers on the Dart team, publicly challenged me on Twitter to actually show up and ship something:)

I like a challenge, and the comment was a fair one! So that weekend I took a few hours to try and complete a real app from start to finish.flutter

The goal of this post is to show you how to build an app with a Login screen and a simple Home screen. I choose this topic since I couldn’t find any topics explaining how to implement a Login app with SQFLite and a REST backend. Of course you can use Firebase Authentication for this, but the point is to make it easy for you to understand the ceremony involved in setting up a REST and DB client in Flutter.flutter

At Posse, we’ve been all-in on Flutter since the beginning. Flutter is Google’s emerging multi-platform development framework to create iOS and Android (and more) apps from a single codebase. We designed, developed, launched, and are actively managing the flagship Flutter app — the app for the Broadway Musical Hamilton.

While Flutter is still in its early days and the developer community is only now starting to emerge, there are ton of great articles already out there. We’re consolidating them here to help others interested in Flutter get off the ground fast!unity flutter

So you have gotten started with Flutter, have your app prototype up and running, and have started thinking about how you’d test your app. This guide will give you the quick and dirty of how to run and debug your tests.test flutter

JSONPlaceholder is a free online REST service that you can use whenever you need some fake data.

It's great for tutorials, faking a server, sharing code examples, ...test

Linkedin, Yahoo, Dropbox and many others got hacked, and a list of 1.4 billion accounts is diligently copied around the Internet. Now it is time to check what they have got on you — and change your passwords today. Search for a full email address or a domain name.

We have completed implementation of Navigation Drawer and Routing in the previous article. In this article we will see implementation of Dynamic Drawer List, Stateful Widgets, Forms and Validation. see video 2.01 for Final snapshotflutter