instance variable access (via self) results in a null pointer dereference

Question

Running an analysis on my app results in the logical error in the subject. I don't really know what that means. Below is a screen of the error:

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score 34 · Accepted Answer · answered Apr 20 '12 at 13:16

34

The path it's showing you is super returning nil. If this happens, you continue to execute the method; the implicit self deference is because isShowingLandscapeView is an instance variable. You need to put all your initialisation inside the if (self) block to avoid this.

answered Apr 20 '12 at 13:16

Adam Wright

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+1 because I didn't know that accessing an ivar would dereference the object! – Christian Schnorr Apr 20 '12 at 13:50

instance variable access (via self) results in a null pointer dereference

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