Droidcon India 2012

India's largest Android Conference

Lets Code an Android App with "Javascript" using Titanium

Submitted by Ravindra Kumar (@ravidsrk808) on Sunday, 21 October 2012

Section: App Demos Technical level: Beginner Session type: Demo

View proposal in schedule

Abstract

  • Coding an Android App using Titanium from scratch.
  • Do's and Don'ts to work with Titanium.
  • Lets look at the common mistakes which we do with Titanium.
  • Building the Titanium UI quickly.

Outline

Coding demo of building an Android Application from scratch using Titanium. Debugging Titanium Apps.

Speaker bio

I am front end engineer from Cleartrip. Currently working on mobile apps for cleartrip. My previous experience was with creating hybrid mobile apps. Have worked on more than 20 hybrid apps.

Links

Comments

  • Ravindra Kumar (@ravidsrk808) Proposer 7 years ago

    Titanium takes your Javascript code, analyses and preprocesses it and then pre-compiles it into a set of symbols that are resolved based on your applications uses of Titanium APIs. From this symbol hierarchy we can build a symbol dependency matrix that maps to the underlying Titanium library symbols to understand which APIs (and related dependencies, frameworks, etc) specifically your app needs. I’m using the word symbol in a semi-generic way since it’s a little different based on the language. In iPhone, the symbol maps to a true C symbol that ultimately maps to a compiled .o file that has been compiled for ARM/i386 architectures. For Java, well, it’s more or less a .class file, etc. Once the front end can understand your dependency matrix, we then invoke the SDK compiler (i.e. GCC for iPhone, Java for Android) to then compile your application into the final native binary.

    So, a simple way to think about it is that your JS code is compiled almost one to one into the representative symbols in nativeland. There’s still an interpreter running in interpreted mode otherwise things like dynamic code wouldn’t work. However, its much faster, much more compact and it’s about as close to pure native mapping as you can get.

Login with Twitter or Google to leave a comment