App crashes on pressing back button

app crashes when pressing back button

log description:- [FootballScoreBoardViewController bannerViewDidLoadAd:]: message sent to deallocated instance 0x5aae9e0

Ithink this method is not called 开发者_如何学Gobut how to sort the problem Please help Thanks in ad

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You might deallocating some released or unallocated item in the dealloc {} part or some items may gets released without allocating the same like array or variable or lable etc.

Or else you might calling the array without the values .

check the same by debugging you'll get answer definetely

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This means that you are calling a method on an object that has been released.

You may be calling release 1 too many times on a object. Use zombies to diagnose whats going on. Without posting some code its hard to tell whats going on

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Thanks guys for your answer.

Finally I got the solution of my problem. There was one delegate method that was called so simply I set to nil in dealloc method.