Re: When to remove Gesture Recognizers

[Quincey Morris]

On Feb 24, 2016, at 12:17 , Dave  wrote:
> 
> I’m adding a Gesture Recognizer to a view in the awakeFromNIB method. This 
> works ok but I’m getting crashes sometimes and I’m wonder it its because I’m 
> not removing it? If so, when is the best place to call 
> RemoveGestureRecognizer?

I add them in viewWillAppear and remove them in viewDidDisappear (of the 
relevant view controller, of course). I don’t see any point in adding them when 
the view loads, since they’re only effective when the view is present in the 
“live” view hierarchy, hence appear/disappear seems appropriate.

I dunno what anyone else thinks, but in may mind the trend is away from doing 
anything in awakeFromNIB, if for no other reason than you don’t know for sure 
how many times it will be called. For things that need to be done after NIB 
loading, viewDidLoad (or windowDidLoad) seems like a better choice.

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When to remove Gesture Recognizers

[Dave]

Hi All,

I’m adding a Gesture Recognizer to a view in the awakeFromNIB method. This 
works ok but I’m getting crashes sometimes and I’m wonder it its because I’m 
not removing it? If so, when is the best place to call RemoveGestureRecognizer?

Thanks a lot
All the Best
Dave


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