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Editorial Team
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Asked: 2026-05-20T05:53:44+00:00

I’m trying to load an array from the NSUserDefaults in an iPhone application. I

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I’m trying to load an array from the NSUserDefaults in an iPhone application. I set things up with this code:

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
self.myarray_1 = nil;

but then my application crashes at the following line:

self.myarray_1 = [[NSMutableArray alloc] 
                   initWithArray: [defaults objectForKey:@"highscores"]];

with the error

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', 
reason: '-[NSCFString count]: unrecognized selector sent to instance 0x796c710'

How can I solve this?

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1 Answer

  1. Editorial Team

    The error message says that an instance of NSString received a count message, but obviously it does not respond to it (i.e. does not implement such a message). Most likely the message was intended for an NSArray instance.

    Did you accidentally save an NSString instead of an NSArray in your defaults for the key @"highscores"? Maybe in one of your previous builds? To clear all user defaults, you could just delete the app from the simulator or your device and reinstall it.

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