如何包裝UICollectionView

我已經使用水平收集視圖來滾動UILabel。在我的陣列中，我有30件物品。當我滾動到第30個項目時，它應該再次顯示第一個項目，就像一個圓形滾動。以下是我想要實現的代碼和圖像。如何包裝UICollectionView

- (NSInteger) collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section 
    { 
    return self.waitListArray.count; 
    } 

- (UICollectionViewCell *) collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath 
{ 

WaitListWarningTimeCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:kCollectionViewIdentifier forIndexPath:indexPath]; 
cell.lblWaitingTime.text = [NSString stringWithFormat:@"%@m", self.waitListArray[indexPath.row]]; 

    if ([self.waitListArray[indexPath.row] intValue]==0) { 

    cell.lblWaitingTime.text = @"Off"; 
} 

if (indexPath.row == self.selectedIndex) 
{ 
    cell.lblWaitingTime.textColor = [UIColor blackColor]; 
} 
else 
{ 
    cell.lblWaitingTime.textColor = [UIColor lightGrayColor]; 
} 

return cell; 
}

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