EXC_BAD_ACCESS signal received

Question

When deploying the application to the device, the program will quit after a few cycles with the following error:

Program received signal: \"EXC_BAD_ACCESS\".         


        

Answer 1

Not a complete answer, but one specific situation where I've received this is when trying to access an object that 'died' because I tried to use autorelease:

netObjectDefinedInMyHeader = [[[MyNetObject alloc] init] autorelease];

So for example, I was actually passing this as an object to 'notify' (registered it as a listener, observer, whatever idiom you like) but it had already died once the notification was sent and I'd get the EXC_BAD_ACCESS. Changing it to [[MyNetObject alloc] init] and releasing it later as appropriate solved the error.

Another reason this may happen is for example if you pass in an object and try to store it:

myObjectDefinedInHeader = aParameterObjectPassedIn;

Later when trying to access myObjectDefinedInHeader you may get into trouble. Using:

myObjectDefinedInHeader = [aParameterObjectPassedIn retain];

may be what you need. Of course these are just a couple of examples of what I've ran into and there are other reasons, but these can prove elusive so I mention them. Good luck!