how to do infinite scrolling images using cocoa touch - iphone

Question

I want to add infinite scrolling images and there is no end for images scrolling:
const CGFloat kScrollObjHeight = 200.0;
const CGFloat kScrollObjWidth = 320.0;
const NSUInteger kNumImages = 17;
- (void)layoutScrollImages
{
UIImageView *view = nil;
NSArray *subviews = [scrollview1 subviews];
CGFloat curXLoc = 0;
for (view in subviews)
{
if ([view isKindOfClass:[UIImageView class]] && view.tag > 0)
{
CGRect frame = view.frame;
frame.origin = CGPointMake(curXLoc, 0);
view.frame = frame;
curXLoc += (kScrollObjWidth);
}
}
[scrollview1 setContentSize:CGSizeMake((kNumImages * kScrollObjWidth), [scrollview1 bounds].size.height)];
}
-(void)viewDidLoad
{
self.view.backgroundColor = [UIColor viewFlipsideBackgroundColor];
[scrollview1 setBackgroundColor:[UIColor blackColor]];
[scrollview1 setCanCancelContentTouches:NO];
scrollview1.indicatorStyle = UIScrollViewIndicatorStyleWhite;
scrollview1.clipsToBounds = YES;
scrollview1.scrollEnabled = YES;
scrollview1.pagingEnabled = YES;
for(int i=0;i< kNumImages;i++)
{
NSString *imgName=[[NSString alloc] initWithFormat:#"head%d.png",i];
UIImage *img=[UIImage imageNamed:imgName];
UIImageView *imageView=[[UIImageView alloc] initWithImage:img];
[imageView setFrame:CGRectMake(i* kScrollObjWidth, 0, kScrollObjWidth,kScrollObjHeight)];
[scrollview1 addSubview:imageView];
[imageView release];
[imgName release];
}
scrollview1.contentSize= CGSizeMake(kScrollObjWidth* kNumImages, kScrollObjHeight);
[self layoutScrollImages];
[super viewDidLoad];
}

Answer 1

Just make a simple new project with .h file as
#import <UIKit/UIKit.h>
#interface scrollableImageViewController : UIViewController {
IBOutlet UIScrollView *sview;
}
#end
and the .m file with this method
- (void)viewDidLoad {
[super viewDidLoad];
for(int i=0;i<10;i++)
{
NSString *name=[[NSString alloc] initWithFormat:#"images%d.png",i];
NSLog(#"%#",name);
[name release];
UIImage *img=[UIImage imageNamed:#"img.png"];
UIImageView *imageView=[[UIImageView alloc] initWithImage:img];
[imageView setFrame:CGRectMake(i*57, 0, 57, 57)];
[sview addSubview:imageView];
[imageView release];
}
sview.contentSize= CGSizeMake(57*10, 57);
}
and check the result

Answer 2

You can check out Apples sample code PhotoScroller.
It's the code they introduced at WWDC 11
in Session 104 - Advanced ScrollView Techniques. You can watch this video (and the corresponding PDF) for free if you are a registered Apple developer.