Frameworks Such as PhoneGap and React Native Ease Mobile App Development

  • Development frameworks such as PhoneGap and, more recently, React Native make it significantly easier for retail businesses to build and deploy mobile applications for consumers and internal teams.
  • First, developing mobile apps in each platform’s native language means that you need to have a few development specialists: a Swift developer for iOS, a C++ developer for Windows Mobile, and a Java developer for Android.
  • Another framework, Xamarin, takes this same approach, but uses the C++ language as its starting place, making it possible for developers accustomed to working with Microsoft applications to create a single application with all the capabilities of a native-language app, and deploy it across mobile operating systems.
  • PhoneGap, React Native, and other frameworks make developing a custom mobile app more accessible and relatively less expensive than developing in a specific mobile operating system’s native coding language.
  • Or those same in-house developers could build internal mobile apps to help the business operate without learning new programming languages or having to create different versions of the same application for each platform.

Development frameworks such as PhoneGap and, more recently, React Native make it significantly easier for retail businesses to build and deploy mobile applications for consumers and internal teams. Radio-frequency identification …
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What’s New With Server-Side Rendering in React 16 – Hacker Noon

What’s New With Server-Side Rendering in #ReactJS 16:  by @xander76 #JavaScript #NodeJS

  • Naturally, this feature is also supported by React 16’s server-side rendering.So, you can now server-render components that look like this:class MyArrayComponent extends React.Component { render() { return [ div key=”1″first element/div, div key=”2″second element/div ]; }}class MyStringComponent extends React.Component { render() { return “hey there”; }}class MyNumberComponent extends React.Component {…
  • To learn more about this feature, read Dan Abramov’s post on the React blog about the change.React 16 SSR Doesn’t Support Error Boundaries or PortalsThere are two new features in the React 16 client-side renderer that are unfortunately not supported in the server-side renderer: Error Boundaries and Portals.
  • If for any reason there’s a mismatch, React raises a warning in development mode and replaces the entire tree of server-generated markup with HTML that has been generated on the client.In React 16, though, the client-side renderer uses a different algorithm to check that the server-generated markup is correct.
  • And when the client-side renderer in React 16 detects a markup mismatch, it only attempts to change the HTML subtree that doesn’t match, rather than the entire HTML tree.Generally, this change shouldn’t have much effect for end users, except for one fact: React 16 doesn’t fix mismatched SSR-generated HTML attributes…
  • This performance optimization means that you will need to make extra sure that you fix any markup mismatch warnings you see in your app in development mode.React 16 Doesn’t Need To Be Compiled For Best PerformanceIn React 15, if you used SSR straight out of the box, performance was less…

There are lots of exciting new bits (most notably the Fiber rewrite), but personally, I’m most excited about React 16’s many improvements that have been made to server-side rendering. Let’s take a…
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Learn JavaScript Promises by Building a Promise from Scratch

How to Easily Build Forms in @reactjs Native:  #JavaScript #Tech

  • But don’t let the fancy name or the fact that there is asynchronous code intimidate you — a Promise is just a plain old JavaScript object with special methods that allow you to execute code synchronously (it will do things in order even though there is a delay).
  • typeof new Promise((resolve, reject) = {}) === ‘object’ // trueLet me reiterate (because this is something that was difficult for me to grasp when I first learned promises), a Promise is just an object.
  • Behind the scenes, the fetch function is doing something like this.const fetch = function(url) { return new Promise((resolve, reject) = { request((error, apiResponse) = { if (error) { reject(error) } resolve(apiResponse) }) })}The fetch() function makes an http request to the server, but the client doesn’t know when the server…
  • This allows you to chain multiple then()’s since you’re returning the object itself.NOTE: In the native Promise, these then() and catch() functions actually return a new Promise themselves, but for this simple scenario, I’ve only returned this.
  • then() chain.When your asynchronous function calls resolve(apiResponse), the promise object then begins executing onResolve(apiResponse).

The block of code in the .then() waits until it receives the response from the server before it executes anything. This is called a Promise. But don’t let the fancy name or the fact that there is…
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With styled-components into the future – 💅 styled-components – Medium

With styled-components into the future  #styledcomponents #react #cssinjs #css #reactjs

  • Those remain the same and intact.While this sounds like no more can be achieved from a library that was mostly about best practices and common patterns in CSS, we are still in a position to drive change in the community.And this is because of the ecosystem that people have created…
  • Even more so with our new docs that we’ve published a few months ago.But the real question is, what makes it the library you know and love?There’s a lot of great content and talks from both Max and Glen, so if you’re new to what the ideas of the library are,…
  • [1]Then we have to transform the CSS to be able to inject it [2], and finally inject your CSS into the stylesheet, at the position that we’ve marked earlier.In v2 and onwards we’ve focused a lot on optimising all of the different steps involved here for performance, but one step…
  • The idea that becomes increasingly important here is, that we can’t build a library that works for some special use cases, but what we can build is a CSS infrastructure that allows you to change the CSS yourself.Let’s see how we could approach this.The interesting thing is that with v1…
  • We can run our transformations during Babel’s transpilation, or during build-time in general.We can build a CSS-in-JS pipeline!This would result in nothing being shipped to the runtime, and as long as we can provide an “opt-in” system, you would still be able to decide whether you’d like to ship the…

styled-components has changed a lot in its past. And we are not even done yet!
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Mike Grabowski: Compared to its alternatives, React is what makes React Native shine

.@Grabbou: Compared to its alternatives, #ReactJS is what makes React Native shine

  • We have special weekly meetings of every open source project team which makes it easy to join any time.
  • We plan to make it public at some point, so that it’s not only transparent for folks what we are up to, but also easy to join and help us deliver for better tomorrow.Does the focus on modern technology stack help Callstack acquire more clients?It is just one of the…
  • What they are looking for is to solve specific problems that they have, and right now, the best answer to this problem is: Use React Native.What’s the best use case for choosing React Native over fully native applications?If you have an app that’s already written in React and looking into…
  • There are hundreds of other, perfectly legitimate use cases, to go with React Native.Have you experienced React license issues bothering your clients?No.What do you think is the future web and mobile development?That really depends on vendors.
  • I am paying attention to the way Kotlin evolves on other platforms as well as Flutter, that unlike React Native, uses its own rendering engine and compiles ahead of time.Are you excited about speaking at React Day Berlin?Yeah, totally!

Because Mike is going to speak about animation in React Native at React Day Berlin on December 2, we asked him a couple of questions about his experience with the technology and his current position…
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Story of rewriting react-native-opentok and challenges that we have encountered down the road…

  • Finally, we solved all of them :)This article contains useful steps that you can perform in order to debug and fix real-life issues on native sideWhat is OpenTok?The OpenTok platform, developed by TokBox, makes it easy to embed high-quality interactive video, voice, messaging, and screen sharing into web and mobile apps.It…
  • Here are the most annoying issues that we have encountered on each platform respectively while writing clients:Android: Updating native view doesn’t work.We had a native view which we wanted to update after we connect to a session and receive a stream.
  • Our Subscriber view implements SessionDelegate class what means we can set this view as a delegate in session and listen on events i.e. when session receive a stream, session instance invokes method onStreamReceived on pointer to delegate.
  • Enabling zombies in Xcode is very easy.Click the active scheme in the top left and choose Edit Scheme.Select Run on the left.Open the Diagnostics tab at the top.Tick the checkbox labeled Enable Zombie Objects.Tick the checkbox labeled Enable Zombie Objects.Now Xcode’s Console will give you more complex message i.e.[RNOpenTokSubscriberView respondsToSelector:] message…
  • So remember when you reload JS part of application new instance of your native module will be created but if you are using singleton it will be the same instance as before reload.As I wrote at the beginning we solved all of our issues but some of them took a…

At Callstack we have open source meetings each month. At one of the past meetings we came up with idea to re-maintain our old project called react-native-opentok, because it was a bit dusty and…
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Building Native Mobile Apps with React Native

Building Native Mobile Apps with React Native |

  • It’s been tough for developers to create native apps in different OS platforms.
  • Moreover, developing the native apps for different platforms requires skill sets and experience pertinent to the OS platform.
  • As a result, React Native is making progress by providing Real Native experience for different OS platforms.
  • The beauty of React Native is that it allows developers to build native apps using JavaScript and React.Its main theme lies on utilizing the power of React in native platforms.
  • The most useful features of React Native are the capability to write source code only in React Native, and the ability to compile it on various OS platforms.

React Native is providing Real Native experience for different OS platforms. It allows developers to build native apps using JavaScript and React.
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