IOS exception and Error Accumulation

1. The corresponding method is not found.

'Nsinvalidargumentexception ', reason:'-[testclass initevent]: Unrecognized selector send to instance 0x10011b330'

2. aviewcontroller. XIB cannot be found. It may be because the XIB name is wrong.

22:52:33. 922 helloiphone [667: c07] *** terminating app due to uncaught exception 'nsinternalinconsistencyexception', reason: 'Could not load nib in Bundle: 'nsundle </users/Xue/library/Application Support/iPhone simulator/6.0/applications/063d5459-6be3-43a6-8eb3-f03a43c42917/helloiphone. APP> (loaded) 'with name 'aviewcontroller''

3.

Reason: 'Could not instantiate class named nslayoutconstraint

Solution: Disable the use auto layout option of the storyboard or XIB interface file, because the auto layout feature is newly added to iOS 6 and is not supported in the previous 5.0/5.1 simulator.