What does the error “unrecognized selector sent to instance” mean in Xcode

Question

What does it mean \"unrecognized selector sent to instance\" in Xcode?

Answer 1

I received this error due to not assigning the custom class to the view in the Interface Builder.

 NSArray *subviewArray = [[NSBundle mainBundle] loadNibNamed:@"EventsFilterView" owner:self options:nil];
 self.filters = [subviewArray objectAtIndex:0];

The variable self.filters was assigned to the EventFilterView class but the actual view in the xib file was not.

Hope this helps someone.