Scroll list of thumbnails - iphone

Question

I need to allow my users to scroll through a list of thumbnails in the documents directory on an iPad application. When they tap on one of the thumbnails, I need to know which one was tapped (or have it call a method, which is basically the same thing.)
I know how to put the thumbnails in the documents directory, and how to read them from there. But I’m not sure which widget is best for displaying the content. Is it UITableView? CCScrollLayer? CCMenuAdvanced? Something else?

Answer 1

CCScrollLayer doesn't work as well as UIScrollView.
I use the view to CCdirector for add UIkit.
UIScrollView *scrollView = [UIScrollView alloc] init];
[[[CCDirector sharedDirector] view] addSubview:scrollView];
or add UITableView.

Answer 2

Take all the paths for thumbnails in one array, lets call pathsArray
NSArray *pathsArray = [seld getPathsForAllImages];
Now implement UITableViewDataSource and UITableViewDelegate:
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [pathsArray count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];
}
NSString *pathForImage = [pathsArray objectAtIndex:indexPath.row];
cell.imageView.image = [UIImage imageWithContentsOfFile:pathForImage];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *pathForImage = [pathsArray objectAtIndex:indexPath.row];
}

Answer 3

I've had all kinds of problems with overlaying a UIScrollView on a cocos2d project. Even with all the suggested hacks, if a single frame takes too long in cocos2d, the UIScrollView just stops working right. I would suspect that would happen with a UITableView as well.
To solve my own problems, I created a custom ScrollNode class. It's really easy to use:
// create the scroll node
ScrollNode *scrollNode = [ScrollNode nodeWithSize:CGSizeMake(size.width, size.height)];
[self addChild:scrollNode];
// Generate some content for the scroll view
// add it directly to scrollView, or to the built in menu (scrollView.menu)
[scrollNode.menu addChild:yourMenuItem];
// Set the content rect to represent the scroll area
CGRect contentRect = [scrollNode calculateScrollViewContentRect];
[scrollNode setScrollViewContentRect:contentRect];