Ethereum Light client with React – Ko – Medium

Ethereum Light client with React  #react #ethereum #reactjs

  • { ssl_fc }frontend wwws mode http bind :443 ssl crt /etc/haproxy/certs/You Cert.pem timeout client 1h tcp-request inspect-delay 500ms tcp-request content accept if HTTP default_backend privatenetwork_backend acl is_privatenetwork hdr_end(host) -i Your domain use_backend privatenetwork_backend if is_privatenetworkbackend privatenetwork_backend mode http option forwardfor option http-server-close option forceclose no option httpclose balance roundrobin option…
  • web3 is official Javascript library for ethereum.npm install –save eth-lightwalletnpm install –save hooked-web3-providernpm install –save web3# Or you may do just npm installA bit of hackIn your Javascript file,// step 1: import web3, eth-lightwallet, and hooked-web3-providerimport Web3 from ‘web3’import lightwallet from ‘eth-lightwallet’import HookedWeb3Provider from ‘hooked-web3-provider’// step 2: you may need to…
  • It’s a bit troublesome though because every time I add new module, I need to do “npm install” at eth-lightwallet directory.Now you are ready to create UIFirst step is creating keystore or wallet with keystore.
  • # I pick the name wallet because in the original document, the term keystore is used both medhod name and generated wallet with keystore and bit confusing.let wallet# get pwDerivedKey password, (err, pwDerivedKey) = { if (err){ console.log(“err 1:”, err) } # goto step.2Step 2 is generate address.
  • # step.2: add new 3 connect to our node (rpc server) with hooked-web3-provider# step.3: prepare providervar web3Provider = new HookedWeb3Provider({ host: “https://your rpc server”, transaction_signer: wallet});const web3 = new Web3(web3Provider);Here you need hooked-web3-provider.

Light client is an ethereum client which keeps only keys. You can check accurate definition here. Traditionally in blockchain world, everyone keep same databases. That’s why we can trust entire…
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Issue 9: React 16 🎉 – React Native Coach

Issue 9: React 16  #iosappdevelopment #androidappdevelopment #javascript #reactjs

  • The full meeting notes are available here.GeekyAnts announced their React Native design tool BuilderX at React Europe and launched React Native Seed, boilerplates for your next React Native project.Facebook is actively working on improvements to Text and TextInputcomponents on Android.Microsoft released code signing for CodePush.
  • Full details are available here.Around the WebGreat addition to this series on Major League Soccer’s path to universal components in React Native from kurtiskemple.Mapbox began supporting an experimental React Native component this week and you can get all the details here.
  • 🗺Get your next project started fast with GeekyAnt’s cool new tool which generates boilerplates for React Native projects including most common dependencies.
  • From Sanket Sahu.Alex Grigoryan announces Walmart Lab’s latest platform Electrode Native which aims to reduce the difficulty for developers who want to build and reuse React Native components across multiple apps.Awesome post and demo from Karim Maaloul on WebGL interaction and animation techniques.SponsoredGet your next React Native project up and…
  • 👏🏻ReactReact 16React 16 was released this week and there’s a lot of exciting updates that should improve our workflows and the performance of our React Native apps.

React 16 was released this week with a host of other frameworks having updates as a result. We’ll be taking a look at one of those in this issue but I would check your dependencies for updates. If…
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Changing Default Splash Screen In React Native

  • I remember when I wanted to add a splash screen to my React Native application, it took me a while to implement the feature.
  • I’ve decided to write a blog post about an easy way to add your customized splash screens to your React Native apps.
  • Follow these steps to create and run your app: – – Here is a screen shot of the default splash screen: – – – – Next, you need to generate your splash screen sizes for different mobile views.
  • Here a few examples of splash screen generator sites you can use: Ape Tools, TiCons.
  • Here are the steps to follow: – – I hope you were able to follow the steps to get your splash screens on your apps.

Step by step tutorial on adding splash screens to your applications.
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Introducing React Native support for Radar – On the Radar

Introducing React Native support for Radar:  #ReactJS #JavaScript

  • Introducing React Native support for RadarBy popular demand, we’re excited to introduce React Native support for Radar on iOS and Android.React Native is a framework from Facebook that lets you build mobile apps using only JavaScript.
  • It abstracts away cross-platform differences, much like Radar abstracts away cross-platform differences between location services on iOS and Android.Now it’s easier than ever to add location tracking and context to your React Native apps.
  • After you sign up for Radar, create geofences, and configure your projects, you can start tracking users and receiving events with just a few lines of code:If you’d like to learn more, see the documentation and source on GitHub or get the react-native-radar package on npm.Happy coding!

React Native is a framework from Facebook that lets you build mobile apps using only JavaScript. It abstracts away cross-platform differences, much like Radar abstracts away cross-platform…
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A brief overview about React Native – Cristiano de Araujo – Medium

A brief overview about React Native  #reactnative #react #reactjs #reactjs

  • We can build cross platform apps such as Android and IOS.React Native comes with the idea to code once and deploy everywhere so you don’t need to work twice to have your app running in different platforms.With React Native we can have almost all React library concepts including components, state, life-cycles methods and so on.
  • All of them is classified as hybrid frameworks and runs inside a WebView but a React Native app are not a hybrid app because it do not run in a WebView.
  • For this reason React Native apps are faster than hybrid apps and offer a better user experience.What is the advantages?The first and maybe one of the best advantages is the cross platform development capability.
  • That’s great specially when you’re working in a startup that have a small team of developers that constantly deal with the aggressive market competition.With React Native you just need to have a good JavaScript knowledge to go ahead with the basics concepts and understand well how to build a real mobile app.
  • In addition to reducing the number of people responsible for one application, it is really very easy to code and get fast results because we don’t need to recompile the code every time we make a change!The other great advantage is that React Native is open source, so we don’t need to pay to use the framework and we also can submit pull requests to the core repository.How can I be more productive using it?You may heard somewhere that a good practice for a programmer is to reuse code.

This article is for you who have heard about this technology, but do not feel totally safe or/and do not have much time to get to know it.
So let’s get start with some questions. It is a framework…
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Rapid cross-platform mobile development with React Native

  • We can avoid the need for lots of upfront planning and naturally fall into certain conventions and patterns of data fetching and state management.
  • import React, { Component } from ‘react’
  • React Native exposes the Platform module, which detects the platform on which the app is currently running.
  • Sometimes we may need to diverge our application flow by platform in order to perform the appropriate action, but often it’s as simple as swapping some values around based on the current platform.
  • Platform-specific extensions allow us to write a separate file for each platform, e.g. button.ios.js and button.android.js .

How React Native helped us ship a cross-platform mobile app in 8 weeks.
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Getting Started #

Getting Started  #reactnative

  • Click “Apply” to download and install the Android SDK and related build tools.
  • Android Studio installs the most recent Android SDK by default.
  • 1. Download and install Android Studio #
  • react – native init AwesomeProject cd AwesomeProject react – native run – android
  • If you’ve already installed Android Studio before, you can still install HAXM without performing a custom installation.

Welcome to React Native! This page will help you install React Native on
your system, so that you can build apps with it right away. If you already
have React Native installed, you can skip ahead to the
Tutorial.
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