All table view cells have a separator underneath them by default, and that separator likes to start a little way from the left edge of the screen for stylistic reasons. If this clashes with your own personal aesthetic, you might think it's easy to remove but Apple has made the matter quite confused by changing its mind more than once.
If you absolutely, definitely want to remove the separator inset from all cells, you need to do two things. First, add these two lines of code to your table view controller's viewDidLoad() method:
tableView.layoutMargins = UIEdgeInsets.zero
tableView.separatorInset = UIEdgeInsets.zeroNow look for you cellForRowAt method and add this:
cell.layoutMargins = UIEdgeInsets.zeroDone!
Did this solution work for you? Please pass it on!
Other people are reading…
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Master iOS 10 now!
My book Practical iOS 10 gives you seven complete coding projects that teach all the major new features in iOS 10 in a smart, practical way.