Advanced Cross-Platform Development

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Advanced Cross-Platform Development Ricardo Alcocer | @ricardoalcocer

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Cross-Platform Development Fundamentals Ricardo Alcocer | @ricardoalcocer

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What you need to know before you build a cross- platform app Ricardo Alcocer | @ricardoalcocer

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$ whoami · Lead Developer Evangelist @ Appcelerator · Former independent Titanium trainer · Obsessed with native cross- platform development · Love knowledge transfer, hacking and tech startups · Author of Titanium Alloy in Action

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Cross-platform Development: A very old problem

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Menus are in different places

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Buttons are written in different styles

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These two buttons are different by design

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Fast-forward to 2009

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iOS was nice and polished; Android was mostly monochromatic and plain

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Today Android has user interface guidelines

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Devices are not only for testing

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Be the #1 fan of the platforms you target

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When you strive for consistency, you achieve it through mediocrity — Phil Libin, CEO Evernote

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Evernote mobile app

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Cross-platform done right

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Can we achieve this with Appcelerator?

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Heck yeah! And with a single code base!

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It all begins with your "main app container"

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Cross-platform tabs

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Different container, code reused

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Multiple Windows in a single View file Home

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Views in platform-specific folders

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Platform-specific styling ".loginLabel[platform=ios]":{ font:{ fontSize: 20 } } ".loginLabel[platform=ios]":{ font:{ fontSize: 22 } }

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index.xml

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index.js

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Platform-specific home.xml

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Platform-specific containers

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Sample full app

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Know your target platforms Read the User Interface Guidelines

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Top 10 Tips for successful cross-platform development

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#10 Work with your design team

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#9 Beauty is relative to the platform

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#8 Code reuse is for code, not necessarily for UI

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#7 Tabs: Deep vs Shallow

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Tabs : Deep vs Shallow

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Tabs : Deep vs Shallow

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#6 Always think stateless

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#5 Know your target platforms Read the User Interface Guidelines

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#4 Don't fear modules

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#3 Emulate UI elements only when justified

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#2 Test often

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#1 Be your user!

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Questions?

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Thank you! Twitter: @ricardoalcocer SpeakerDeck: /ricardoalcocer Find the sample code at Github.com/ricardoalcocer Check out my book at http://bit.ly/alloybook 40%-oﬀ with coupon code tialloyapp