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iOS

Posted by Will Lam
Will Lam
7,027 Points

FunFacts app error

Getting this error:

FunFacts[47444:1916432] -[UIButton setText:]: unrecognized selector sent to instance 0x7c91dda0 2014-12-24 16:02:30.597 FunFacts[47444:1916432] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIButton setText:]: unrecognized selector sent to instance 0x7c91dda0'

I can't quite pin-point where I"m going wrong.. I'm guessing I'm pointing to the wrong thing for the "show another fun fact" button?

https://www.evernote.com/shard/s51/sh/ecb6c154-a7ff-409a-862f-1c9718b81f90/be43fcfc2c0cf96e4acccc61fa84b23a

Nick Janes
Nick Janes
5,487 Points

Are you calling a setText method? Can I see the code in your classes?

Michelle Hermanson
Michelle Hermanson
1,949 Points

Did you solve this? I am getting the same error as soon as I try to connect the button to the label. I tried restarting Xcode and the simulator-- same problem. Then I tried deleting code for updating the text from the ViewController and just going back to having the println() when the button was clicked -- same problem. Then I removed the label and the button from the ViewController and the storyboard. I should just be able to bring up an app with an empty screen. Still same issue. I don't know where this FunFactLabel is still defined/being used.

I guess my next approach will be to start a new project. But I have the feeling the same things will happen...

3 Answers

Stephen Whitfield
Stephen Whitfield
16,771 Points
Stephen Whitfield
Stephen Whitfield
16,771 Points

Does UIButton have a method called "setText"? Maybe you're wanting to implement "setTitle:forState:"?

https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIButton_Class/index.html#//apple_ref/occ/instm/UIButton/setTitle:forState:

Stephen Whitfield
Stephen Whitfield
16,771 Points
Stephen Whitfield
Stephen Whitfield
16,771 Points

Michelle Hermanson: sounds like your issue may be related to a floating pointer. Check your views in storyboard and make sure the subviews are all being pointed to.

Michelle Hermanson
Michelle Hermanson
1,949 Points
Michelle Hermanson
Michelle Hermanson
1,949 Points

Thanks, Stephen. I don't have any subviews, I am just in the beginning of the course trying to add one button and one label. But, you are right it's a reference to something that doesn't exist any more... I found a post that explained the problem and how to find the code and delete it from the story board.

http://wpguru.co.uk/2013/02/how-to-fix-this-class-is-not-key-value-coding-compliant-after-accidentally-adding-an-iboutlet-instead-of-an-ibaction/

Stephen Whitfield
Stephen Whitfield
16,771 Points

I figured as much. I've made the same mistake plenty of times. Good luck!