Capacitor: from PWA to native app in 5 minutes

Capacitor : from PWA to native app in 5 minutes Horacio Gonzalez @LostInBrittany 1 @LostInBrittany #Capacitor @LostInBrittany #Capacitor#DevoxxFr #DevoxxFr

Who am I? Introducing myself and introducing OVH @LostInBrittany #Capacitor @LostInBrittany #Capacitor#DevoxxFr #DevoxxFr

Horacio Gonzalez @LostInBrittany Spaniard lost in Brittany, developer, dreamer and all-around geek Flutter @LostInBrittany #Capacitor #DevoxxFr

OVH : Key Figures 1.3M Customers worldwide in 138 Countries 1.5 Billions euros investment over five years 30 Datacenters (growing) 350k Dedicated Servers 200k Private cloud VMs running 650k Public cloud Instances created in a month 15TB bandwidth capacity 35 Points of presence 4TB Anti DDoS capacity Hosting capacity : 1.3M Physical Servers @LostInBrittany #Capacitor #DevoxxFr

• 2 500 Employees in 19 countries 20 Years of Innovation

OVH: A Global Leader on Cloud 200k Private cloud VMs running 1 Dedicated IaaS Europe 2018 27 Datacenters Own 15 Tbps Hosting capacity : 1.3M Physical Servers 360k Servers already deployed @LostInBrittany #Capacitor #DevoxxFr Network with 35 PoPs

1.3M Customers in 138 Countries 2020 50 Datacenters

Ranking & Recognition 1st European Cloud Provider* 1st Hosting provider in Europe 1st Provider Microsoft Exchange Certified vCloud Datacenter Certified Kubernetes platform (CNCF) Vmware Global Service Provider 2013-2016 Veeam Best Cloud Partner of the year (2018) * Netcraft 2017 - @LostInBrittany #Capacitor #DevoxxFr

OVH: Our solutions Cloud Web Hosting Mobile Hosting Telecom VPS Containers ▪ Dedicated Server Domain names VoIP Public Cloud Compute ▪ Data Storage Email SMS/Fax Private Cloud ▪ Network and Database CDN Virtual desktop Serveur dédié Security Object Storage Web hosting Cloud HubiC Over theBox ▪ Licences Cloud Desktop Securities MS Office Hybrid Cloud Messaging MS solutions @LostInBrittany #Capacitor #DevoxxFr

Capacitor The Native Bridge for Cross-Platform Web Apps @LostInBrittany #Capacitor @LostInBrittany #Capacitor#DevoxxFr #DevoxxFr

What’s Capacitor? Cross-platform app runtime making it easy to build web apps that run natively on iOS, Android and web @LostInBrittany #Capacitor #DevoxxFr

Spiritual heir to Apache Cordova Evolution, not revolution @LostInBrittany #Capacitor #DevoxxFr

Spiritual heir to Apache Cordova Support for many Cordova plugins @LostInBrittany #Capacitor #DevoxxFr

Extensible and evolutif ● Close to web-standards ● Plugin API ○ Swift on iOS ○ Java on Android ○ JavaScript for the web @LostInBrittany #Capacitor #DevoxxFr

Developer Friendly Easy to get started Works on any framework @LostInBrittany #Capacitor #DevoxxFr

You still need the platform tools Android Studio and/or Xcode to build the native packages @LostInBrittany #Capacitor #DevoxxFr

Weren’t you a PWA advocate? And you are also championing Flutter! Where is the coherence, guy? @LostInBrittany #Capacitor @LostInBrittany #Capacitor#DevoxxFr #DevoxxFr

Well, I am a PWA advocate indeed I rooted for PWA before it was fancy… @LostInBrittany #Capacitor #DevoxxFr

And I know the numbers… Apps drive engagement, web drive visitors… @LostInBrittany #Capacitor #DevoxxFr 20 biggest apps account for 80% of user time

An engineer role is to choose The right tool for the right problem @LostInBrittany #Capacitor #DevoxxFr

If you need super fancy UX 60 FPS, slick animations, an experience more than an app Then go full native And BTW, do it in Flutter @LostInBrittany #Capacitor #DevoxxFr

For more normal needs A well done PWA is simply enough @LostInBrittany #Capacitor #DevoxxFr

But if you need to be in the store? For many reasons, not all objective… @LostInBrittany #Capacitor #DevoxxFr

Hybrid PWA apps The best of two worlds @LostInBrittany #Capacitor #DevoxxFr

Capacitor take your PWA to the store In a simple, quick and painless way @LostInBrittany #Capacitor #DevoxxFr

First steps testing Capacitor Adding Capacitor to an existing app @LostInBrittany #Capacitor @LostInBrittany #Capacitor#DevoxxFr #DevoxxFr

From web to native Giving superpowers to you webapp @LostInBrittany #Capacitor #DevoxxFr

Testing with a real webapp Warp 10 Photon - IDE for Warp 10 @LostInBrittany #Capacitor #DevoxxFr

Step 1 - Add Capacitor to the app ● Install Capacitor cd my-app npm install —save @capacitor/core @capacitor/cli ● Init Capacitor npx c ● Add Android and/or iOS and/or Electron support npx cap add android @LostInBrittany #Capacitor #DevoxxFr

Step 2 - Copy to Android ● Edit capacitor.config.json to choose the built folder ● Copy the built resources to Android npx cap copy ● Launch Android Studio npx cap open android @LostInBrittany #Capacitor #DevoxxFr

Step 3 - Test And our webapp is now a native app @LostInBrittany #Capacitor #DevoxxFr

First test: successful! Capacitor 1 - Scepticism 0 @LostInBrittany #Capacitor #DevoxxFr

The Capacitor example app Nice to explore Capacitor @LostInBrittany #Capacitor @LostInBrittany #Capacitor#DevoxxFr #DevoxxFr

Made by the Ionic team To replace Cordova in Ionic 4 @LostInBrittany #Capacitor #DevoxxFr

Official example built on Ionic Showcasing Ionic 4 @LostInBrittany #Capacitor #DevoxxFr

Let’s try the official example @LostInBrittany #Capacitor #DevoxxFr

Using directly the Capacitor repository Custom built project, not a production app @capacitor/core and native libs loaded from local directory @LostInBrittany #Capacitor #DevoxxFr

Let’s build the Android version Some pre-building and building needed… @LostInBrittany #Capacitor #DevoxxFr

We now have an Android project @LostInBrittany #Capacitor #DevoxxFr

Easy and painless Android app @LostInBrittany #Capacitor #DevoxxFr

And in PWA mode? Some elements haven’t web implementation (yet?) @LostInBrittany #Capacitor #DevoxxFr

But it still works! It fails gracefully for unsupported plugins @LostInBrittany #Capacitor #DevoxxFr

Second test: successful! Capacitor 2 - Scepticism 0 @LostInBrittany #Capacitor #DevoxxFr

Let’s try something harder Stencil & capacitor @LostInBrittany #Capacitor @LostInBrittany #Capacitor#DevoxxFr #DevoxxFr

Capacitor without Ionic I want to use it Capacitor with my own toolset @LostInBrittany #Capacitor #DevoxxFr

I’m a Web Components guy And I speak a lot about Polymer @LostInBrittany #Capacitor #DevoxxFr

But Polymer is in a transition phase Polymer 2.x : bower based Polymer 3: npm based but recommended only for legacy LitElement: the new, lightweight, blazing fast library by Polymer team @LostInBrittany #Capacitor #DevoxxFr

So what to use? Stencil, of course! The magical, reusable web component compiler @LostInBrittany #Capacitor #DevoxxFr

Let’s begin with a simple example A Camera app, working well on web mode Using standard Media Capture and Streams API @LostInBrittany #Capacitor #DevoxxFr

Let’s charge it with Capacitor We want the same behavior But now in Android, iOS, Electron AND web @LostInBrittany #Capacitor #DevoxxFr

And does it work? Yes it does… in native mode only! @LostInBrittany #Capacitor #DevoxxFr

But not in PWA mode :( And a big question: why? @LostInBrittany #Capacitor #DevoxxFr

Well, let’s spot the differences… Searching on the example code hmmmm, @ionic/pwa-elements, what’s that? @LostInBrittany #Capacitor #DevoxxFr

@ionic/pwa-elements Web-based alternatives for some Capacitor plugins @LostInBrittany #Capacitor #DevoxxFr

Adding @ionic/pwa-elements Simply install them: npm install @ionic/pwa-elements And then import them: import ‘@ionic/pwa-elements’; @LostInBrittany #Capacitor #DevoxxFr

And then… It’s a kind of magic! @LostInBrittany #Capacitor #DevoxxFr

On Android and Web @LostInBrittany #Capacitor #DevoxxFr

Second test: successful! Capacitor 3 - Scepticism 0 @LostInBrittany #Capacitor #DevoxxFr

And in Real Life? Because examples are examples… @LostInBrittany #Capacitor @LostInBrittany #Capacitor#DevoxxFr #DevoxxFr

Use case 1: Putting PWA into store It simply works, easy and painless! @LostInBrittany #Capacitor #DevoxxFr

Use case 2: Progressive enhancing Giving your PWA an extra P when going native @LostInBrittany #Capacitor #DevoxxFr

And Capacitor already works A true winner @LostInBrittany #Capacitor #DevoxxFr

Conclusions Capacitor or not? @LostInBrittany #Capacitor @LostInBrittany #Capacitor#DevoxxFr #DevoxxFr

Still fairly recent There are small glitches Doc could be more detailed, with more examples @LostInBrittany #Capacitor #DevoxxFr

Easy to use Friendlier than Cordova @LostInBrittany #Capacitor #DevoxxFr

Yet extensible You can use existing Cordova plugins @LostInBrittany #Capacitor #DevoxxFr

Not opinionated Easy to use in any framework Easy to integrate in any dev toolchain @LostInBrittany #Capacitor #DevoxxFr

Thank you! @LostInBrittany #Capacitor #DevoxxFr