Why is a UITableViewCell 1px taller than the row height?

Question

I have a UITableViewController. In viewDidLoad I set the rowHeight:

self.tableView.rowHeight = 43;

But then in cellForRowAtIndexPath, I check the height of the cell:

NSLog(@"bounds: w = %f, h = %f", cell.bounds.size.width, cell.bounds.size.height);

This prints a height of 44 and a width of 320. Anyone know why it would print a height of 44 instead of 43?

Thanks!

Answer 1

Do you have a:

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

You can implement this method to return 43 no matter what. You can also customize to your heart's content. That's why it takes a UITableView as its first argument. You could have multiple UITableViews using the same delegate.

Answer 2

Simply put, the two things are independent of each other.

When you set rowHeight in your UITableView object, you are telling it how to render the table. The default value for rowHeight is 44.

When you create a UITableViewCell object, as a subclass of UIView, it has its own default frame and bounds, which includes a height (and width). The default value for height also just happens to be equal 44.

Your confusion arises because you have created a UITableViewCell object and you expected it to have a height equal to the (not default) rowHeight property in your UITableView object. How can it? It just came into existence!

Like all UIViews, until something comes along and explicitly changes its height, its height won't change.