David Blanton wrote:
_myDocumentView = [[MyDocumentView alloc] init]; [_myDocumentView retain];
This is over-retaining _myDocumentView. You called alloc/init, so you already own the instance. If you retain it again, you're not gaining anything. Unless you're doing the extra retain because you're over-releasing somewhere else. Then the extra retain is hiding the symptom of the over-release bug.
Regarding the rest of your code, is it possible for -drawRect to be called before readFromData has been called and returned? I note this in particular because drawRect is basically a callback rather than something you directly invoke.
Is MyDocumentView being added to a view hierarchy before readFromData has been invoked?
And is there a reason readFromData isn't a method of MyDocumentView? It seems odd to be manipulating another object's ivars directly from some other class.
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