This is a simple application MovingBall. In this application Balls are moving on the screen.
collision detection is implimented in our application. This is the Ball to Ball collision detection. Whenever the balls collide at an angle their velocity increases dramatically.
Quartz 2D is an advanced, two-dimensional drawing engine available for iPhone application development and to all Mac OS X application environments outside of the kernel.
This application used both Portrait and Landscape mode. I will show you how to change that orientation at runtime.
There are many way to write “Hello World” program in iphone. But we’ll show you how to work with Interface Builder. This is a very simple example. Just try it.





