iphone - Disable action - user taps on tabbar item to go to root view controller -

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i want disable default action when user taps tabbar item.

for example, have tabbar tab1, tab2 , tab3. in tab1, user can navigate view1 view3 (view1 > view2 > view3). if user @ view3, , taps tab1, application takes user view1 (the root view controller). want disable functionality. don't want tap on tab1 pop view controllers. how can that?

edit:

this behavior little strange, handy shortcut in case of deep hierarchy!

you can implement following uitabbarcontrollerdelegate methods disable system wide shortcut:

#pragma mark - #pragma mark uitabbarcontrollerdelegate  - (bool)tabbarcontroller:(uitabbarcontroller *)tbc shouldselectviewcontroller:(uiviewcontroller *)vc {     uiviewcontroller *tbselectedcontroller = tbc.selectedviewcontroller;      if ([tbselectedcontroller isequal:vc]) {         return no;     }      return yes; }

if @ uitabbarcontroller delegate there method:

- (bool)tabbarcontroller:(uitabbarcontroller *)tabbarcontroller shouldselectviewcontroller:(uiviewcontroller *)viewcontroller

if implement in class, can check if uiviewcontroller displayed 1 , return no, stop happening.

i had same problem abpeoplepicker object embedded in uitabbarcontroller, in pressing 'contacts' tab second time displayed make abpeoplepicker control show 'groups'


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