collectionView

-(void) nextpage{

 NSIndexPath *currentIndexPath = [[self.collectionView indexPathsForVisibleItems] lastObject];

 

 NSIndexPath *currentIndexPathReset = [NSIndexPath indexPathForItem:currentIndexPath.item inSection:YYMaxSections/2];

 [self.collectionView scrollToItemAtIndexPath:currentIndexPathReset atScrollPosition:UICollectionViewScrollPositionLeft animated:NO];

 

 NSInteger nextItem = currentIndexPathReset.item +1;

 NSInteger nextSection = currentIndexPathReset.section;

 if (nextItem==self.newses.count) {

 nextItem=0;

 nextSection++;

 }

 NSIndexPath *nextIndexPath = [NSIndexPath indexPathForItem:nextItem inSection:nextSection];

 

 [self.collectionView scrollToItemAtIndexPath:nextIndexPath atScrollPosition:UICollectionViewScrollPositionLeft animated:YES];

}