ios - UIBarButtonItem does not show disabled state titleTextAttributes -

i'm trying set disabled textattributes on uibarbuttonitem in uitoolbar.

i create item so:

nsdictionary *enabledattrs  =  @{ nsfontattributename               : font,                                   nsforegroundcolorattributename    : color };  nsdictionary *disabledattrs =  @{ nsfontattributename               : font,                                   nsforegroundcolorattributename    : [uicolor graycolor] };  [item settitletextattributes:enabledattrs forstate:uicontrolstatenormal]; [item settitletextattributes:disabledattrs forstate:uicontrolstatedisabled]; 

however, when set item.enabled = no, button disabled (it not fire action) not honor titletextattributes -- still appears in normal state. why?

create uibutton , wrap uibarbutton,i think should work.

uibutton *uibutton = [[uibutton alloc] init]; [uibutton settitlecolor: color1 forstate: uicontrolstatenormal]; [uibutton settitlecolor: color2 forstate: uicontrolstatedisabled];  uibarbuttonitem *uibarbuttonitem = [[uibarbuttonitem alloc] initwithcustomview:uibutton];