Can delete the finish animate. i find a KVO crash

[Dcell]

if i fast exit viewController, it will KVO crash.

i find the finish animate, it's not a weak self.
ScrollView deinit, but PullerRefresh can't deinit. can't remove kvo.
then crash :(

[vvit]

@dingqili do you store your PullToRefresh instance in view controller ivars?

[Dcell]

@vvit
Thanks for Help. I'm not store PullToRefresh in view controller.

1. It's my crash Info.

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'An instance 0x15fa1c800 of class UICollectionView was deallocated while key value observers were still registered with it. Current observation info: <NSKeyValueObservationInfo 0x160a6d8d0> (
<NSKeyValueObservance 0x15f7d1a60: Observer: 0x160a48aa0, Key path: contentOffset, Options: <New: NO, Old: NO, Prior: NO> Context: 0x160a48b60, Property: 0x1609d4030>
<NSKeyValueObservance 0x160a60310: Observer: 0x160a48aa0, Key path: contentSize, Options: <New: NO, Old: NO, Prior: NO> Context: 0x160a48b60, Property: 0x160847b80>
<NSKeyValueObservance 0x160a5f4c0: Observer: 0x160a48aa0, Key path: contentInset, Options: <New: YES, Old: NO, Prior: NO> Context: 0x160a48b60, Property: 0x160848230>
)'
*** First throw call stack:
(0x180a7edb0 0x1800e3f80 0x180a7ecf8 0x1813d2d80 0x1800fdae8 0x18095c9fc 0x180a32bc0 0x18095cc50 0x182244088 0x185c46088 0x100224d24 0x1804fa8b8)
libc++abi.dylib: terminating with uncaught exception of type NSException

2.Debug Memory Graph

It's not Deinit. Maybe cause of origin UIView.animate

3.WorkSpace

1.Xcode8.1
2.Object-c Project Use Swift FrameWork
3.IOS 9.3 , SDK >= 8.0
4.

       weak var controller = self;
       self.collectionView.addPullToRefresh(PullToRefresh()) { 
            controller?.refresh()
        }
        let bottomRefresh = PullToRefresh();
        bottomRefresh.position = .bottom;
        self.collectionView.addPullToRefresh(bottomRefresh) { 
            controller?.getMore()
        }
        self.collectionView.startRefreshing(at: .top)

    deinit {
        if self.isViewLoaded {
            self.collectionView.removePullToRefresh(self.collectionView.topPullToRefresh!)
            self.collectionView.removePullToRefresh(self.collectionView.bottomPullToRefresh!)
        }
    }

[gica-gugui]

+1 to this issue. However the crash happens only on iPhone 5 devices in my case (maybe this info is helpful).

[pmusolino]

Any news about this bug?

[srj0x0]

@codeido, @gica-gugui, try to remove PullerRefresh's from scroll view when your view controller is releasing.