Hi all,
I'm new to Cocoa, and I couldn't find information about an error that I'm
getting on the web. I'm trying to create an NSMutableDictionary where the keys
are of type UIButton*:
// create button for unit
UIButton* unitButton = [[UIButton alloc] init];
[sourceButtonMap setObject:[NSString
stringWithString:@"no"] forKey:unitButton];
Of course, the sourceButtonMap is defined in the class and initialized in the
init function as sourceButtonMap = [[NSMutableDictionary alloc] init];
The error I get when I try to add the key-value pair is:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException',
reason: '*** -[UIButton copyWithZone:]: unrecognized selector sent to instance
0x3931e90'
Is this happening because I can't store UIButton* as keys?
Can anyone point me why I'm getting this error? Thank you all,
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