Bug 16711 - Crash in MKMapView on clicking RightCalloutAccessoryview.
Summary: Crash in MKMapView on clicking RightCalloutAccessoryview.
Alias: None
Product: iOS
Classification: Xamarin
Component: Pre-release ()
Version: 7.0.4.x
Hardware: Macintosh Mac OS
: Normal normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2013-12-10 14:42 UTC by shuklaa
Modified: 2013-12-13 11:05 UTC (History)
4 users (show)

Is this bug a regression?: ---
Last known good build:

Crash log (38.75 KB, application/octet-stream)
2013-12-10 14:42 UTC, shuklaa

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Description shuklaa 2013-12-10 14:42:06 UTC

I'm running iOS 7.04. on iPhone 5.Here is the scenario. In my mapview, I have user tracking enabled and the blue dot representing user has a callout which on tapping takes the user to the next screen. If the user is stationary and then the callout is touched, it transitions to the next screen flawless. This transition is repeatable and without any issues. Now when the user starts to move and as a result user location changes in the mapView and then the callout is touched, it crashes with this exception:

Objective-C exception thrown. Name: NSInvalidArgumentException Reason: -[VKCacheNode BridgeSelector]: unrecognized selector sent to instance 0x17ae40b0
 Google revealed that this VkCacheNode is from some iOS 6 private framework https://github.com/mattlawer/iOS6-Private-Frameworks/blob/43ca814f3954ac8e409fcbb694cb660c2d50f346/VectorKit/VKCacheNode.h

does anyone knows about this?
Comment 1 shuklaa 2013-12-10 14:42:46 UTC
Created attachment 5630 [details]
Crash log
Comment 2 Sebastien Pouliot 2013-12-12 21:19:54 UTC
Would it be possible to create a small, self-contained, test case to reproduce the crash and attach it to this bug report ?

Comment 3 shuklaa 2013-12-13 10:27:32 UTC
  I have not been able to repro the crash. One of the thing that I noted which prolly I was doing wrong was to use :using() when adding the rightcalloutAccessoryView for a MapView Annotation. 
After eliminating that I have not been able to repro the issue. Atleast for the time being. 
I will do some more research and if there is a consistent repro path, I will upload the demo app you requested. 
Thanks for taking time to look in to the issue. 
It is very much appreciated.

Comment 4 Sebastien Pouliot 2013-12-13 11:05:46 UTC
A `using` would dispose the managed instance at the end of it's scope. That would mean the native code could not callback into the managed instance after that block.

IOW your managed instances needs to be alive as long as they can be used (and the native/managed life cycle can be different in some cases, e.g. callbacks).

If you can reproduce the issue (with a test case) then please re-open this bug report and we'll have a look into it asap. Thanks