Question

I am new with iOS Developpement and trying to use Core Data with a TableView.

I get an EXC_BAD_ACCESS when using Core Data an TableView. I’m not sure if error comes from Core Data objects or TableView because I don’t know were I am in my code.

#0  0x0157ea63 in objc_msgSend ()
#1  0x0582ea20 in ?? ()
#2  0x005c100f in -[UITableViewRowData invalidateAllSections] ()
#3  0x0047bb00 in -[UITableView(_UITableViewPrivate) _updateRowData] ()
#4  0x004778a7 in -[UITableView noteNumberOfRowsChanged] ()
#5  0x004842b8 in -[UITableView reloadData] ()
#6  0x00481470 in -[UITableView layoutSubviews] ()
#7  0x01ff2451 in -[CALayer layoutSublayers] ()
#8  0x01ff217c in CALayerLayoutIfNeeded ()
#9  0x01feb37c in CA::Context::commit_transaction ()
#10 0x01feb0d0 in CA::Transaction::commit ()
#11 0x0201b7d5 in CA::Transaction::observer_callback ()
#12 0x013fdfbb in __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ ()
#13 0x013930e7 in __CFRunLoopDoObservers ()
#14 0x0135bbd7 in __CFRunLoopRun ()
#15 0x0135b240 in CFRunLoopRunSpecific ()
#16 0x0135b161 in CFRunLoopRunInMode ()
#17 0x01a69268 in GSEventRunModal ()
#18 0x01a6932d in GSEventRun ()
#19 0x0041942e in UIApplicationMain ()

Answer 1

Probably from your TableView, set breakpoints in your datasource method to find out or set NSZombie environment variable

You will probably discover that your datasource try to access an unallocated object