heightForRowAtIndexPath for longer NSStrings

iphone, nsstring, uitableview

Solution

Here is the code I am using for this. It works like a charm for one type of cell. It may have some useful parts for your application.

- (CGFloat) tableView:(UITableView *)tableView heightForRowAtIndexPath: (NSIndexPath *) indexPath {
AppAppDelegate *appDelegate = (AppAppDelegate *)[[UIApplication sharedApplication] delegate];
NSString *Text = ([[appDelegate.myTextSectionsDelegateDict objectAtIndex:indexPath.section] objectForKey:@"Text"]);

    UIFont *cellFont = [UIFont fontWithName:@"Helvetica" size:17.0];
    CGSize constraintSize = CGSizeMake(280.0f, MAXFLOAT);
    CGSize labelSize = [Text sizeWithFont:cellFont constrainedToSize:constraintSize lineBreakMode:UILineBreakModeWordWrap];
    return labelSize.height + 15;}

Problem

I have a `UITableView` (Grouped!) and need to calculate the height of two styles of cells: `UITableViewCellStyleDefault` and `UITableViewCellStyleValue2`. This is how I do it for `UITableViewCellStyleDefault`: ``` CGSize textSize = {300.f, 200000.0f}; CGSize size = [myTextString1 sizeWithFont:[UIFont systemFontOfSize:14.0f] constrainedToSize:textSize lineBreakMode:UILineBreakModeWordWrap]; size.height += 30.0f; result = MAX(size.height, 44.0f); ``` And for `UITableViewCellStyleValue2`: ``` CGSize textSize = {207.f, 200000.0f}; CGSize size = [myTextString2 sizeWithFont:[UIFont systemFontOfSize:14.0f] constrainedToSize:textSize lineBreakMode:UILineBreakModeWordWrap]; size.height += 30.0f; result = MAX(size.height, 44.0f); ``` My issue it that they return incorrect heights and I think it's the `textSize` where I use incorrect numbers. With long texts, the bottom part gets cut short (usually just a line with a few words), and for both CellStyles they have weird spacing above and below the text in the cell. For `UITableViewCellStyleValue2` I got the width size (`207.0f`) from making the text.backgroundColor red and then just calculating the size of the box. `300.0f` width for `UITableViewCellStyleDefault` is how big the cell is with `UITableViewStyleGrouped`. Does anyone know which values I need to use to properly calculate the size of an `NSString` and thereby get appropriate height for my cells? Thanks

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