在导航栏中自定义UIBarButtonItem。

Question

I have a separate customisation class that does all the customisation of controls. I am also customising navigation bar buttons.

Now in navigation VC's viewDidLoad, I am passing a reference to the VC's leftBarButtonItem, to the customisation class, and the reference is of type UIBarButtonItem. But how will he customisation class know, that the passed reference to the UIBarButtonItem is the left button? I need the class to know this, since the customisation for left button is different from the right button. I want to avoid creating a custom Enum for that, if it's possible to do it with built-in framework capabilities.

Can you help please?

Answer 1

I did something similar a while back. You will probably want to make your customization method have an argument that tells it what kind of button you are passing

[CustomizationClass customizeButton:leftBarButton ofType:kLeftBarButton];

Then make the customizeButton method check for the "ofType" and customize accordingly.

EDIT: just read what you said about custom enums. As far as I know, there is no way to detect this.