Creating mobile apps - an introduction to Ionic (Engage 2016)
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Slides from my session on Thursday, March 25 2016 at Engage 2016 in Eindhoven, The Netherlands.
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Creating mobile apps - an introduction to Ionic (Engage 2016)
- 1. #engageug Creating mobile apps an introduction to
- 2. #engageug 2 • What are hybrid apps? • What is Ionic? • How can Ionic help to build a hybrid app? • How do I make Ionic talk to Domino? What you’ll learn (a.k.a. “Agenda”)
- 3. #engageug 3 • You have some experience in using HTML, CSS and JavaScript • Maybe you know some AngularJS • Your undivided attention :-) What I expect from you
- 4. #engageug 4 • Long-time Domino/ XPages/ web developer • Co-owner of Viaware • Freelance web developer • Fan of everything web dev (Angular, Bootstrap, MeteorJS) • Open source dev, blogger, StackOverflow • IBM Champion 2011-2015 /Me
- 5. #engageug 5 Source:times.com/ Joseph van Os / Getty Images
- 6. #engageug 6 Three types of apps Mobile browser <html> function() { foo = bar; } Native container <html> function() { foo = bar; } Device API Native app 10101011101 01011001010 11010101010 11010101010 10101101010 10101101010 Device API Mobile web Hybrid app Native app
- 7. #engageug 7 • Build using HTML, CSS, JavaScript • Responsive UI • Quick (cheap) to develop • Not installable from app stores • “Add to homescreen” • Can’t access all device capabilities • camera, contacts, sharing options, … Mobile web
- 8. #engageug 8 • Best in terms of performance, UI, look & feel • Access all device capabilities • Installable from app stores • Expensive (time/ money) to build for multiple platforms • Requires specific toolset for every supported platform • Objective C, Swift, Java, C# Native
- 9. #engageug 9 • Best of both worlds • Native application that uses mobile platform’s WebView • Think of a WebView as an embedded browser • In general, takes less time to develop. • Cross platform • Installable from app stores • Can use native components Hybrid
- 10. #engageug 10 Hybrid WebApp (HTML, CSS, JS) Native container Webview Native components Native container Webview Native components Native container Webview Native components
- 12. #engageug 12 • Better WebViews • Performance and capabilities • Apple allowing access to WKWebView • http://developer.telerik.com/featured/why-ios-8s- wkwebview-is-a-big-deal-for-hybrid-development/ • Better tooling (like Ionic…) But that changed
- 14. #engageug 14 • Platform to build hybrid apps • Tries to overcome common problems • Optimized UI components • Publication/ updating apps • Development workflow • Push notifications Ionic
- 15. #engageug 15 • Built on top of AngularJS • Can be deployed to the app stores • For iOS, Android, Windows Phone • V2 in the making Ionic
- 16. #engageug 16 • Based on Apache Cordova • Open sourced PhoneGap version • Managed by Apache Foundation Ionic
- 17. #engageug 17 • Platform that provides a consistent set of JavaScript APIs to access device capabilities through plug-ins • Allows Ionic to build for multiple platforms • Access to device functionality • Plugin eco-system, can be added to Ionic • https://cordova.apache.org/plugins/ Cordova
- 18. #engageug 18 Hybrid WebApp (HTML, CSS, JS) Native container Webview Native components Native container Webview Native components Native container Webview Native components
- 19. #engageug 19 • CSS components • grid, headers, tabs • JavaScript components • popups, tabs, modals • Icons • ion icons Ionic Framework
- 20. #engageug 20 • Action sheet • Content pane • Form inputs • Gestures/ events • Headers/ footers • Keyboard • Tabbar • Lists UI Controls ▸ Navigation ▸ Modal ▸ Popover ▸ Popup ▸ Scroll ▸ Side menu ▸ Spinner ▸ Tabs http://ionicframework.com/docs/components
- 22. #engageug 22 • npm install -g cordova ionic Installing Ionic
- 23. #engageug 23 • Ionic comes with a couple of boilerplate apps (blank, sidemenu, tabs) • Give you a basic app/ folder structure • ionic start <yourApp> <template> Getting started
- 24. #engageug 24 • ionic start engage sidemenu Demo
- 25. #engageug 25 • ionic serve • ionic run -l • ionic run android -l • ionic build Testing and debugging
- 26. #engageug 26 • Ionic creator • Ionic view • Ionic lab • Ionic deploy • Ionic push • Ionic auth Ionic services
- 27. #engageug 27 • Mainly to create static pages • Little application logic Ionic Creator
- 28. #engageug 28 • Downloadable app to preview your work • From the CLI: “ionic upload” • Usable for testing Ionic View
- 29. #engageug 29 • Desktop app that wraps commands for which you would normally use the CLI. • Comes with a built-in Chrome version Ionic Lab
- 30. #engageug 30 • Deploying different code versions within the existing app. • Different “channels” for dev/ test/ prod Ionic Deploy
- 31. #engageug 31 • Push notifications through Ionic Ionic Push
- 32. #engageug 32 • Authentication through Ionic Services Ionic Auth
- 33. #engageug 33 • Ionic framework is open source • The services aren’t • Free while in beta • There is a free plan Pricing
- 35. #engageug 35 • Get some real data using REST • http://www.assono.de/blog/d6plinks/ ibmconnect2016-ad1238 • Authentication • Make updates (save, delete) • https://github.com/markleusink/ionic-demo Extending the demo
- 36. #engageug 36 • When viewing an Ionic app in a browser you’ll run into CORS issues • Can be solved by using the built-in proxy function • Means you need to update your API’s endpoint (when developing) • And change it back when deploying… • Alternative is to add the headers to your Domino server CORS
- 37. #engageug 37 • The ExtLib REST service provides pagination of results out-of-the box. • Use start and count parameters • Response has a header called Content-Range Infinite scroll
- 38. #engageug 38 • Basic- or session authentication • For session: Domino returns login form when login unsuccessful • While you where expecting JSON • But if you know that it should be JSON, you can check for that. • Create login form, post to “.nsf?login”, handle response Authentication
- 39. #engageug 39 • Save • HTTP PATCH to ExtLib REST Service • /api.xsp/users/<unid> • Can perform field validations • Delete • HTTP DELETE to ExtLib REST Service Updates
- 40. #engageug 40 • Hybrid apps are a great way to get started building apps • Ionic is stable, but still in beta • Cross-platform • Ionic gives your near-native look & feel and performance • But if you want (need) more, go for native • Keep an eye on the pricing model (when out of beta) Wrap up