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Is it safe to use [[self.view viewWithTag:999] removeFromSuperview]; without checking if the view actually exists?
There is no error on simulator but will it cause no problem on a real device?
Is there any drawback of not using such condition?
It is completely alright to call
[[self.view viewWithTag:999] removeFromSuperview];directly. If the view exists then[self.view viewWithTag:999]will return the view and it will be removed from its superview. If the view doesn’t exists then[self.view viewWithTag:999]will returnniland passing any message to nil wont take any effect.So, in your case, there is no need to check whether the view actually exists or not.