Is it possible to set the breakpoint in Xcode to have the debugger stop only on unrecognized selector?
I have other exceptions that are triggering, and I only want to trigger on the unrecognized selector exception, nothing else.
Setting a symbolic breakpoint for -[NSObject doesNotRecognizeSelector:] should do the trick.
In Xcode 4, press cmd+6 to go to the Breakpoint Navigator, then click the +and choose "Add Symbolic Breakpoint…". Configure.
来源：https://stackoverflow.com/questions/7156090/creating-breakpoint-in-xcode-for-unrecognized-selector