1. Mobile Device Programming
CS3680

2. CHOOSE YOUR PLATFORM iOS Android Google Apple
and the Open Handset Alliance
Apple
We will talk about both of them in class, but you should choose one to do your projects.

3. TOOLS iOS Eclipse Xcode Android http://eclipse.org
with ADT plug-in
Xcode
Runs on Linux, OS X and Windows
Runs only on OS X
ADT (as in ADT plug-in for Eclipse) stands for Android Development Tools
The Eclipse IDE was originally developed at IBM Canada.
Xcode uses gcc.
You have to use a Mac to develop software for iOS.
Available from
Free and open source
Available on OS X installation disk and in the App Store

4. Java PROGRAMMING LANGUAGE Objective-C iOS Android
Uses some of the Java SE API
Superset of C
There are various libraries and development frameworks (Phone Gap, Quickconnect, Titanium) that allow development of apps for both Android and iOS.
A couple of years ago Apple said it wouldn’t approve any apps made with third party libraries, which (understandably) upset a lot of iOS developers. A few months later they backed down.
The only scripting language that Apple allows is JavaScript (in a web view).
Android has something called SL4A (Scripting Layer for Android.
Python, Perl, JRuby, Lua, BeanShell, JavaScript, Tcl, and shell are currently supported.
Google made their own JVM called Dalvik
Messages, properties
Reference counting—automatic in iOS 5
Garbage collection

5. MAKING A GUI Code iOS XML
Android
iOS
XML
GUI editor—clunky compared to the one for iOS
Xcode storyboards
Before Xcode 4 there was a separate tool called Interface Builder that was used to make iOS GUIs.
Code
Code

6. DISTRIBUTION App Store Google Play iOS Android
Apple must approve every app
Can also install apps from other sources
Android apps were originally sold in the Android Market.
Other iOS options:
Ad hoc distribution if you’re a registered ($100/year) Apple Developer
Enterprise distribution if you’re a ginormous company
Some people complain that Apple’s approval process is arbitrary and slow.
Easy to install apps on your device
Some complaints…
$100 per year
One-time fee of $25

7. WHAT DO YOU THINK?
Android
iOS
(your comments here)

8. ANYTHING IN COMMON? SQLite Open GL ES web views iOS Android Java
Objective-C
Eclipse
Open GL ES
Xcode
Both platforms define various life cycle events in applications.
Both use the concept of views and subviews.
Some hardware features are common to both platforms: cameras, location (GPS), accelerometer.
There are various libraries and development frameworks that can create apps for both. Often those make use of web views, JavaScript, and HTML5.
web views
open
distribution
controlled
distribution