Xcode 8 Breakpoint in file not working

Question

I have one file,SignInViewController.swift, in my Xcode project that out of nowhere has begun not stopping on breakpoints. I have a breakpoint in viewDidL

Answer 1

Open viewController.swift file for initial view in the standard editor and print something inside viewDidLoad and run application.. if the print is working properly, now make sure you have selected viewController.swift file correctly in the assistant editor.