Dismiss popover when app goes in background - Stack Overflow

it is better to register your controller for UIApplicationDidEnterBackgroundNotification or UIApplicationWillResignActiveNotification and dismiss it whenever your app goes to background, this will make your life quite easier i feel.

registering for notification in your viewDidLoad

[[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(myMethod)
                                                 name:UIApplicationDidEnterBackgroundNotification object:nil];

implement the method and

  -(void)myMethod{
    // dismiss popview here
    }

finally un-register from the notification in your view controller

-(void)dealloc{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}

Source:

http://stackoverflow.com/questions/15224245/dismiss-popover-when-app-goes-in-background

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