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I am working on Xcode 7 b3 and i created a new UITextfield in the Storyboard. It is unlinked and not assigned to anything.

When I click it the app crashes. I have no idea why. I can not debug it because it is not linked to anything and normaly should have no reason to crash the app.

Next up I linked it to an IBOutlet and assigned a string. This String shows up but when I tap it the app crashes! No IBAction set.

The error from the console is:

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSCFConstantString stringByAppendingString:]: nil argument'
*** First throw call stack:
(0x185f384d0 0x19a9a7f9c 0x185f38418 0x186ddcbcc 0x196c40590 0x18babdb78 0x18babdcc4 0x18bdedcec 0x18bcd1804 0x18bbdb550 0x10028d5f0 0x10028d5b0 0x10029294c 0x185eefa20 0x185eed888 0x185e1d280 0x190f940cc 0x18b60adf8 0x100150958 0x19b1ea8b8)
libc++abi.dylib: terminating with uncaught exception of type NSException

Thank you for your help.

reptil1990

enter image description here

Carsten Graf
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  • Clearly you've got some method connected to it - `stringByAppendingString` doesn't call itself. Try reproducing your problem in a new project? – brandonscript Jul 23 '15 at 02:03
  • But how can the UITextField call anything when it is just created. No bindings nothing. – Carsten Graf Jul 23 '15 at 02:08
  • Sigh well it is a beta That's why I was suggesting creating it in a new project. – brandonscript Jul 23 '15 at 02:10
  • I would download b4 but the wireless in the hotel is so damn slow -.- but I will try it – Carsten Graf Jul 23 '15 at 02:13
  • The error youre getting is because youre trying to append a nil string. Find out why that is nil and post the code on here too – somtingwong Jul 25 '15 at 23:29
  • The app crashes only when I select the UITextField. And as you see in the picture it is not linked to anything and trigger no function or is linked to an outlet. Why should it crash? – Carsten Graf Jul 26 '15 at 01:00

1 Answers1

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You are liked had something linked to this UITextfield, and you haven't realise it.

Here's how you do.

Delete this UITextfield, drag a new one in you storyboard should work.

If not, I'll help you for the next step

ronan
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