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UICollectionView cellForItemAtIndexPath indexPath row is nil


UICollectionView cellForItemAtIndexPath indexPath row is nil

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UICollectionView cellForItemAtIndexPath indexPath row is nil
Tag : ios , By : amy
Date : November 24 2020, 05:44 AM


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UICollectionView delegate method cellForItemAtIndexPath:indexPath not called from sizeForItemAtIndexPath


Tag : ios , By : LucaN
Date : March 29 2020, 07:55 AM
like below fixes the issue When I call , I ended up with a Class method instead of an instance method:
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {

    return [CustomCell preferredSizeWithData:self.data[indexPath.row]; 

}
CustomCell * cell = (CustomCell *)[collectionView cellForItemAtIndexPath:indexPath];
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath 
CustomCell * cell = (CustomCell *)[self collectionView:collectionView cellForItemAtIndexPath:indexPath];

UICollectionView cellForItemAtIndexPath is nil


Tag : ios , By : user183442
Date : March 29 2020, 07:55 AM
To fix the issue you can do From the UICollectionView docs (emphasis my own)

cellForItemAtIndexPath get the wrong value of indexPath in block


Tag : ios , By : Blaise Roth
Date : March 29 2020, 07:55 AM
wish help you to fix your issue You are not calling collectionView.reloadData() after deletion, and hence you don't get the correct indexpath after delete.
Please call the method and then check.

How can only scroll only between Indexpath.section exclude indexpath.row in UICollectionView


Tag : ios , By : joshski
Date : March 29 2020, 07:55 AM
wish of those help To scroll from one IndexPath.section to another, I only adds new items into the collectionView when i needed with the use of boolean within the collectionView.reloadData() .
 func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
   {
        if tabSelected
        {
           return 2
        }

        else
        {
          return 1
        }
}

UICollectionView CellForItemAtIndexPath not getting called


Tag : ios , By : alexmajy
Date : March 29 2020, 07:55 AM
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