How to give UILabel a blinking effect in Collection View

Question

- (__kindof UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    OfferCell *cell = (OfferCell *)[collectionView dequeueReusableCellWithReuseIdentifier:@"cell" forIndexPath:indexPath];

    cell.lOffer.alpha = 1;

    [UIView animateWithDuration:0.1 delay:0 options:UIViewAnimationOptionRepeat | UIViewAnimationOptionAutoreverse animations:^{
       cell.lOffer.alpha = 0;
    } completion:nil];
}

Now this gives my label (_lOffer) a blinking effect and this label is placed in a collection view cell.

This code works well on the run. But when I tap on the cell and move to next page and come back again, blinking effect doesn't happen. Where can I write that blinking code so that every time the label is blinking even if I move back and forth?

reload your collection view in viewwillappear while coming back — karthikeyan, Jul 26 '18 at 06:49

score 1 · Answer 1 · answered Jul 26 '18 at 09:30

1

The answer i found was to reload the collection view in viewWillAppear.

-(void)viewWillAppear:(BOOL)animated{

   [collectionView reloadData];

}

answered Jul 26 '18 at 09:30

Mukie

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Dude someone else gave you the answer so make theirs correct – agibson007 Jul 26 '18 at 11:12

score 0 · Answer 2 · answered Jul 26 '18 at 07:14

0

Seems your datasource populating in viewDidload, try it in viewwillappear and reload your collection view. viewwillappear only will call while coming back.

answered Jul 26 '18 at 07:14

karthikeyan

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How to give UILabel a blinking effect in Collection View

2 Answers2