Resize UICollectionView cells after their data has been set

Question

My UICollectionView cells contain UILabels with multiline text. I don\'t know the height of the cells until the text has been set on the label.

-(CGSize)c         


        

Answer 1

Hey in the above delegate method itself, you can calculate the UILabel size using the below tricky way and return the UICollectionViewCell size based on that calculation.

    // Calculate the expected size based on the font and 
    // linebreak mode of your label
    CGSize maximumLabelSize = CGSizeMake(9999,9999);

    CGSize expectedLabelSize = 
     [[self.dataSource objectAtIndex:indexPath.item] 
             sizeWithFont:[UIFont fontWithName:@"Arial" size:18.0f] 
        constrainedToSize:maximumLabelSize 
            lineBreakMode:NSLineBreakByWordWrapping];