Using Apple's AccelerometerGraph in modal view causes crash

[shimmy]

My application uses files from Apple example code called AcceleromterGraph (see file GraphView.m). I included the graph view in a modal view controller and on my device the app crashes every time I dismiss the view controller. Using NSZombie it says that "-[GraphViewSegment isKindOfClass:]: message sent to deallocated instance 0xaeee00" and crashes inside the dealloc method for that class, which is inside the GraphView.m

I don't really know why it's doing this. I guess the code wasn't really written for usage in a sub-view like this. It seems like the view is trying to deallocate or communicate with elements of the graph view after they have been deallocated.

I have a GraphView* graphView as a member of my view, which is being initialized through the nib file, not in code. The graphView is connected properly because the data from the accelerometer shows up properly. Any clues? Anything else I should include here?

[shimmy]

any thoughts?

[shimmy]

Well, my fix right now was to release the view inside "ViewWillDisappear" instead of "ViewDidUnload" etc. because I suppose iOS will retain those views otherwise? Seems to avoid the crash... not sure if it's a clean fix though.

EDIT: never mind, doesn't work

EDIT 2: Ooops. I was forgetting to set the accelerometer delegate to nil when I was finished. n00b moment. For memory purposes, should I re-set the accelerometer's delegate to nil every time I pause data collection?