iphone - Swapping views in a tab bar app calling the view controller directly and not by its index -

i want swap views in tab bar application can't rely on index of view controllers change. cannot use code below:

    [self.tabbarcontroller setselectedindex:4]; 

i want able call specific view controller name. how can please?

thanks

you can select view controller of specific class using code:

nsuinteger index = [self.tabbarcontroller.viewcontrollers indexofobjectpassingtest:^bool(id obj, nsuinteger idx, bool *stop) {                     return [obj iskindofclass:[classofviewcontrolleryouarelookingfor class]];             }]; if(index != nsnotfound) {     [self.tabbarcontroller setselectedindex:index]; } 

or can select specific viewcontroller instance using code:

nsuinteger index = [self.tabbarcontroller.viewcontrollers indexofobject:yourviewcontroller]; if(index != nsnotfound) {     [self.tabbarcontroller setselectedindex:index];  }