UIScrollVIew View - iphone

Question

I'm using iCarousel as a slot machine, for those who doesn't know iCarousel it is a UIScrollview with (paged, scrolling views). So in my app, I scroll it, then when it stops it shows the Image(Result) for 3 seconds, then a button pop-ups, if you press the button, it will delete the View(Image Result) then Rotates again.
Here is my way of deleting my carousel view:
NSInteger CurrentImage = carousel.currentItemIndex;
[carousel removeItemAtIndex:CurrentImage animated:YES];
[images removeObjectAtIndex:CurrentImage];
But then when the carousel.numberOfItems has 1 item left, it doesnt scroll, instead its just stuck there.
So I made a way to make it scroll even it has only 1 Item(index) left.
I inserted it with the last index, so I tried this:
[self.carousel insertItemAtIndex:0 animated:NO];
(but doesnt work)
then I tried another:
int lastObject = [images objectAtIndex: ([images count]-1)]
[self.carousel insertItemAtIndex:lastObject animated:NO];
(still doesnt work)
and also this:
int count = [images count];
[images objectAtIndex:count - 1];
(still no luck)
Am I doing wrong? or What are other ways?
Or can I just duplicate the last View? Thanks for the help.
EDIT:
Methods
- (NSUInteger)numberOfItemsInCarousel:(iCarousel *)carousel
{
if ([images count] == 1 || [self.carousel numberOfItems] == 1)
return 2;
return [images count];
}
- (NSUInteger)numberOfVisibleItemsInCarousel:(iCarousel *)carousel
{
//limit the number of items views loaded concurrently (for performance reasons)
return 7;
}
- (UIView *)carousel:(iCarousel *)_carousel viewForItemAtIndex:(NSUInteger)index reusingView:(UIView *)view
{
if (index >= [images count] || index >= [carousel numberOfItems]) {
index = 0;
}
NSDictionary *obj = [images objectAtIndex:index];
view = [[UIImageView alloc] initWithImage:[obj objectForKey:#"image"]];
view.tag = index;
return view;
}
- (NSUInteger)numberOfPlaceholdersInCarousel:(iCarousel *)carousel
{
//note: placeholder views are only displayed on some carousels if wrapping is disabled
return 0;
}
- (CGFloat)carouselItemWidth:(iCarousel *)carousel
{
//usually this should be slightly wider than the item views
return 400;
}
- (BOOL)carousel:(iCarousel *)carousel shouldSelectItemAtIndex:(NSInteger)index{
return 5;
}
- (BOOL)carouselShouldWrap:(iCarousel *)carousel
{
//wrap all carousels
return wrap;
}
Delete Method:
-(void) deleteItem{
//Removes the object chosen
if (carousel.numberOfItems >= 1)
{
NSInteger index = carousel.currentItemIndex;
[carousel removeItemAtIndex:index animated:YES];
//[images removeObjectAtIndex:index];
//[images replaceObjectAtIndex:index withObject:[NSNull null]];
}
}

Answer 1

What you could do is make
- (NSUInteger)numberOfItemsInCarousel:(iCarousel*)carousel;
return always a value >1 (eg. 2); then make sure that
- (UIView*)carousel:(iCarousel*)carousel viewForItemAtIndex:(NSUInteger)index reusingView:(UIView*)view;
always returns a correct view for the minimum number of elements you return from numberOfItemsInCarousel.
Eg.
- (NSUInteger)numberOfItemsInCarousel:(iCarousel*)carousel {
if (numberOfViews == 1)
return 2;
return numberOfViews;
}
- (UIView*)carousel:(iCarousel*)carousel viewForItemAtIndex:(NSUInteger)index reusingView:(UIView*)view {
if (index >= numberOfViews) {
index = 0;
}
NSDictionary *obj = [images objectAtIndex:index];
view = [[UIImageView alloc] initWithImage:[obj objectForKey:#"image"]];
view.tag = index;
return view;
}
You should also make sure that the last element is never deleted of add some guards in the code above to manage the case when no elements are left.