NSCFString _forgetDependentConstraint unrecognized selector sent to instance 0x86a6670

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C

Mobile

iPhone

Objective-C

in my application when i click my rightBarButtonitem it pushed to another view controller but it shows the following error.

-[__NSCFString _forgetDependentConstraint:]: unrecognized selector sent to instance 0x74c5960

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString _forgetDependentConstraint:]: unrecognized selector sent to instance 0x74c5960'


i don't know the mistake what i did.


but in that view controller i put this code only in viewDidLoad

[self.navigationController setNavigationBarHidden:TRUE animated:YES];

give me solution to solve this problem...



thanks in advance.. is it possible to solve?