leftBarButtonItem is NULL

Asked Sep 19 '13 at 22:31

Active Sep 19 '13 at 23:42

Viewed 288 times

running into a weird issue

I have a condition that checks whether a leftBarButtonItem exists and performs an action based on that.

So my check is simple:

  if (!self.navigationItem.leftBarButtonItem)

However, I am running into a situation where the leftBarButtonItem does not exist, but it is also not nill. It is (null).

And the way I find that out is by printing it out:

  NSLog(@"left nav button %@", self.navigationItem.leftBarButtonItem);

Read:

  left nav button (null)

How can you check whether it is NULL since the nil check is not working?

I have tried checking against [NSNull null], isKindOfClass: NSNull Class, == NULL, == NSNull null, (NSNull *) self.navigationItem.leftBarButtonItem == [NSNull null]

I even tried to make a string with leftBarButton's description and check that for null. No go.

Any idea?

edited Sep 19 '13 at 23:42

rmaddy

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asked Sep 19 '13 at 22:31

Live2Enjoy7

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Have you tried `[[NSNull null] isEqual:self.navigationItem.leftBarButtonItem]`? – Sascha Manuel Hameister Sep 19 '13 at 22:50
Do you have a small test case? Which iOS version? – Sascha Manuel Hameister Sep 19 '13 at 22:54

leftBarButtonItem is NULL

0 Answers0