Xcode 8 hangs / unresponsive when opening storyboard

Question

I\'ve recently upgraded to Xcode 8 and updated my project to Swift 3. All worked fine for a little while. Storyboard loading has always been slow (even when still running Xcode

Answer 1

1. open a Finder window and navigate to your project
2. right-click on the .xcodeproj file (it’s a package actually)
3. select Show Package Contents
4. a new window appears
5. delete a folder called xcuserdata
6. restart your mac

Answer 2

Delete your derived data from /Users/{username}/Library/Developer/Xcode/DerivedData

(You can get exact path from) File -> Project Setting: or File -> Workspace Settings

Answer 3

(Xcode 9.2) I had this happen right after I added a constraint to a stackview. No matter what I did, it didn't seem to fix it. I knew it had to be an auto-layout issue it couldn't resolve.

I ended up opening the Main.storyboard file in text editor and deleting the scene that was causing the issue. It will start with

    <!—YourViewControllerName—>
    <scene sceneID=“XXX-XXX-XXX”>

and end with </scene>. Just highlight the entire chunk, delete, save, and try again.

Much better than starting over from scratch!

Answer 4

Until Apple fixes IB, in first XML line (<document> tag) of the offending .xib:

useTraitCollections="NO"

Answer 5

After deleting all sorts of things listed above, and restarting Xcode. The solution was to reboot the computer. Dumb I know, but somehow a resource was tied up in IB.

Answer 6

I got the same problem using Xcode 9.2, fixed it by removing the stack view which wrapped up other views, I just removed the stackview and its subview tags and kept other views in the scene.