I have created 2 callback functions in Obj-C, first callback function works fine but 2nd callback function generating problem.
Please help whats going wrong?
For example:
cb = IOServiceAddMatchingNotification(notifyPort, firstMatchNotification,
matchingDict, RawDeviceAdded, NULL,
&gRawAddedIter);
RawDeviceAdded(NULL, gRawAddedIter, self);
This works fine. But below function receives self as nil.
cb = IOServiceAddMatchingNotification(notifyPort, firstMatchNotification,
matchingDict,BulkTestDeviceAdded,NULL,
&gBulkTestAddedIter);BulkTestDeviceAdded(NULL, gBulkTestAddedIter, self);
Tarun Kumar
14-Oct-2015I am guessing that you are using a common method to handle callback functions, it’s a static function that forwards your instance using callback.
Ok, here I try to solve your problem, I think it’s useful for you, here is the code: