Learn Iphone Touch Event Programming Stanford's Stalker Project

Moving on with Stanford's set of exercise, here I am working on how to handle iPhone's touch events. I will replicate the Stalker class created by Paul?

Steps:
1.) Create a new WIndow-based Application project, Stalker

2.) Create a new class TouchResponder
TouchResponder.h

#import <UIKit/UIKit.h>
@interface TouchResponder : UIView {
 IBOutlet UIView *stalker;
}
@end

TouchResponder.m

#import "TouchResponder.h"
@implementation TouchResponder
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
 [UIView beginAnimations:@"stalk" context:nil];
 [UIView setAnimationDuration:1];
 [UIView setAnimationBeginsFromCurrentState:YES];
 UITouch *touch = [touches anyObject];
 stalker.center = [touch locationInView:self];
 [UIView commitAnimations];
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
}
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
}
@end

2.) Open the interface builder, locate the UIView from the library and drag and drop to the window
  a.) Open the view's Identity Inspector and change the class to: TouchResponder

3.) Repeat step 2, while the second view is selected make the following changes:
  a.) In the Attributes Inspector, set the Background color to red
  b.) In the Size Inspector, x=0, y=0, w=20, h=20

4.) Finally, we will link the first view to the stalker outlet by clicking on the large view and move the cursor to the small view.
5.) stalker outlet should show