Sudhakar Rayavaram
Problem solver (And maker),
Inquisitive (Root to most of my problems),
Software craftsman (Don't ask me for estimates)

Part of TarkaLabs

Technical Advisor for SportIndia

02 Sep 2008
My first iPhone app

Well well…. It is really a great experience to soak my feet in iPhone programming… But, after 3 hours of playing with Objective-C and Cocoa, I was able to get some very simple and completely useless app to work… It does nothing other than displaying a text on button click… Sounds silly right? Yes i know… But, for a java programmer who had never touched Objective-C and Cocoa, I think this as an achievement! :)

Before Click
 
After Click

Apple’s architecture of keeping UIComponents (xib files) and the operations (on it) separate is good… I can design application screens (in Interface Builder) and write functions in Objective-C independently and then associate them later. This way, there is a lot of scope for reuse… However, this mapping part is bit tricky… It took me some time to understand Outlets and Actions…

There is a loooooooooooooong way from here to my first useful application “Time Tracker” and I hope I will be able to do it in a month’s time given my busy schedule ;)

Following sites were very helpful for me in understanding the basics of Objective-C and Cocoa…

  1. http://cocoadevcentral.com/d/learn_objectivec/ (This is a great site for someone like me who is completely new to Objective-C and know Object oriented concepts)
  2. http://www.cocoadev.com/index.pl?FirstResponder (Got good info about FirstResponder)
  3. Apple Cocoa and Objective-C documents (These are pretty dull and boring... was not able to continue reading it without falling asleep.. So, i went directly into coding instead of spending much time on these)