Observation leak when calling dismissPopoverAnimated

[boazin]

On iOS7 only (iOS8 it's OK) - when manually doing
[popoverController dismissPopoverAnimated:YES];

And than trying to re-open the popover (using presentPopoverFromRect)

I'm getting:

An instance 0x7fa658d31340 of class NewChapterViewController was deallocated while key value observers were still registered with it. Observation info was leaked, and may even become mistakenly attached to some other object. Set a breakpoint on NSKVODeallocateBreak to stop here in the debugger. Here's the current observation info:
<NSKeyValueObservationInfo 0x7fa65b01eda0> (
<NSKeyValueObservance 0x7fa658ca31d0: Observer: 0x7fa658d33220, Key path: preferredContentSize, Options: <New: NO, Old: NO, Prior: NO> Context: 0x0, Property: 0x7fa658c829f0>

Tried to debug it - it seems that this is the preferredContentSize but this is as far as I succeeded

[franklau12]

I have the same problem. It also happens on iOS 8 for me.

[alexrogachev]

Got the same problem. Repro is to try to display popover while dismiss animation is still going on, I think, or something like that. I reproduced the crash basically by tapping very fast on a button inside my view controller that shows the popover.

Fixed by adding this to the beginning of [WYPopoverController dealloc] method:

    @try {
        if ([viewController respondsToSelector:@selector(preferredContentSize)]) {
            [viewController removeObserver:self forKeyPath:NSStringFromSelector(@selector(preferredContentSize))];
        } else {
            [viewController removeObserver:self forKeyPath:NSStringFromSelector(@selector(contentSizeForViewInPopover))];
        }
    }
    @catch (NSException * __unused exception) {}

[kamarshad]

@alexrogachev In this way application might crashed even my application is crashing if I tap very fast on button (which use to display popover).
Any alternate to fix that

[woodydaniel]

Has this issue been addressed?
Also getting this crash

[vitalys]

@woodydaniel This repository is abandoned. Try this one: https://github.com/sammcewan/WYPopoverController

[woodydaniel]

Thanks @vitalys