Assertion failure after Xcode update to 7.3

Question

I updated my Xcode to 7.3. Before update I was able to run my code with any errors or crashes. After update I get assertion error when I run the below code on iPhone (Interesting no error on simulator).

let storyboard =  UIStoryboard(name: storyboard, bundle: nil)
self.window?.rootViewController = storyboard.instantiateInitialViewController() as UIViewController!

Error

2016-03-24 16:15:25.891 Zilingo[434:92251] *** Assertion failure in -[UIStoryboard instantiateViewControllerWithIdentifier:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit/UIKit-3512.60.7/UIStoryboard.m:171
error: Execution was interrupted, reason: breakpoint 5.1.
The process has been returned to the state before expression evaluation.

Am I missing some step of the update ?

Make sure the name of the storyboard is correct. It is a bit wierd for me that the storyboard variable has the same name as the string you are using. — Jelly, Mar 24 '16 at 10:56
I made two variables different. Still the issues is still there. One interesting observation is it only shows error when I run it on iPhone and not on simulator — 2ank3th, Mar 24 '16 at 11:06
The error comes when I run it on iPhone and no error on simulator. — 2ank3th, Mar 24 '16 at 11:11
Try clean, delete derived data and maybe change the `initialViewController` in storyboard. — Jelly, Mar 24 '16 at 11:15

score 1 · Answer 1 · edited Jun 02 '16 at 12:19

Try to this format:-   

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

   // get your storyboard
   let storyboard = UIStoryboard(name: "Main", bundle: nil)

   // instantiate your desired ViewController
   let rootController = storyboard.instantiateViewControllerWithIdentifier("MyViewController") as! UIViewController

   // Because self.window is an optional you should check it's value first and assign your rootViewController
   if let window = self.window {
      window.rootViewController = rootController
   }

   return true
}

score 0 · Answer 2 · answered Jul 02 '21 at 11:42

0

I had the same issue. In my case I forgot to add identifier string. let vc = storyboard.instantiateViewControllerWithIdentifier("") as! UIViewController

I wrote like above. I forgot to add identifier. After I added identifier and it worked.

answered Jul 02 '21 at 11:42

Narasimha Nallamsetty

1,215
14
16

Assertion failure after Xcode update to 7.3

2 Answers2