Appcelerator Titanium

iOS and Android Development

• With Android, you write native apps in Java
• With iOS, you write native apps in Objective-C
• With Titanium, you write cross-platform apps in JavaScript, that run on Android, iOS and other platforms

How it Works

• You write code in JavaScript
• Your JavaScript code is minified and optimized during the build process, but still evaluated as JavaScript at runtime on the platform
• At runtime, your application has 3 major components:
  • JavaScript source code
  • Titanium API implementation in the native OS
  • JavaScript interpreter: V8 (Android) or JavaScriptCore (iOS)

How it Works

• The JavaScript interpreter runs your JavaScript code in an environment with proxies for the native objects (windows, controls, etc)
• Ti.UI.createTextField() creates a UITextView on iOS and a TextView on Android

• You are not creating a webpage with HTML and CSS (which is how PhoneGap works): you build UI through code or the Alloy MVC framework

Create a Free Developer Account

https://my.appcelerator.com/auth/signup

The Developer account is free. You can build, test and deploy to the app stores with the free account.

There is an Enterprise plan that provides a SLA, analytics, more cloud, support, training and more.

Titanium Studio

Download Titanium Studio for free here:

http://www.appcelerator.com/titanium/download-titanium/

Works on Mac, Windows and Linux

Titanium Studio

(based on Eclipse)

Code Samples

Get the "Kitchen Sink" sample from Dashboard | Develop, which has code demos for how to use all of the controls:

Also on github.com/appcelerator/KitchenSink

Kitchen Sink

Code samples for how to access all of the platform's native controls through the Titanium APIs (Ti.*)

Project Structure (Classic Project)

• i18n/: Internationalization
• modules/: Native modules
• platform/: iOS/Android specific
• Resources: Core project code
  • app.js: Startup file
  • android/ and iphone/: Platform images
  • lib/, ui/, whatever/: Your code

App Startup

var win = Ti.UI.createWindow({
    title: 'Hello, World!',
    layout: 'vertical',
    backgroundColor: 'white'
});

var helloLabel = Ti.UI.createLabel({
    text: 'Hello World',
    color: 'black',
    font: { fontSize: '20sp' },
    height: '40dp',
    width: '250dp'
});
win.add(helloLabel);

var helloButton = Ti.UI.createButton({
    title: 'Click me!',
    font: { fontSize: '20sp' },
    top: '20dp',
    height: '40dp',
    width: '250dp'
});

helloButton.addEventListener('click', function() {
    alert('you clicked me!');
});
win.add(helloButton);

win.open();

Demo

Demo

Getting Started

First, install Alloy via Node.js's NPM:

sudo npm install -g alloy

Code

app/views/index.html:

<Alloy>
    <Window class="container">
        <Label id="label">Hello World</Label>
        <Button id="button" onClick="doClick">Click me!</Button>
    </Window>
</Alloy>

app/controllers/index.js:

function doClick(e) {
    alert('you clicked me!');
}

$.index.open();

app/styles/index.tss:

".container": {
    backgroundColor:"white"
},
"#label": {
    top: 20,
    width: Ti.UI.SIZE,
    height: Ti.UI.SIZE,
    color: "#000"
}

Demo

Pros

• JavaScript is great for rapid prototyping, and works really well with Titanium
• Titanium is open-source: github.com/appcelerator/titanium_mobile
• The platform is starting to mature and stabilize
• SDK and API documentation, tutorials and samples have improved dramatically over the last year

Cons

• Need to learn a new platform / SDK / quirks
• Knowing the ins & outs of native iOS / Android will help
• You'll still have lots of if(iOS){} and if(android){}
• Performance isn't 100% of a native app (but better than running in a web control)
• Q&A support forum is a mess (use StackOverflow instead)

Unofficial LEGO Minifigure Catalog

• Took ~1 month to develop
• minifigure.org/application
• Releasing content updates via In-App Purchases
• Got featured in iTunes Catalogs category for a week
• Looking back, Titanium was the right choice for our product's needs

Lessons Learned

• I probably spent as much time learning Titanium and building my first app as I would have spent learning native iOS (I had already written native Android apps)
  • Now I can build apps in Titanium quickly
  • 2nd, 3rd and 4th Titanium apps have been a lot faster
• It takes time to ramp-up on good JavaScript patterns: CommonJS modules, Crockford-isms, etc
• iOS simulator is a lot faster to test on. For Android, use Intel x86 images!
• For community support, you'll need to use a combination of the Appcelerator API Docs, Q&A site, videos and StackOverflow

Lessons Learned

• You won't double your sales just by releasing on both platforms