iOS UIView transition, don't change the navigationbar -

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i have uiviewcontroller edit using ib. put uinavigationbar , uisegmentedcontrol on top , 3 uiviews under them. want able switch between uiviews using animation, want animate uiviews, want navigationbar , athe segmentedcontrol not move. show code how now.

any idea how move 3 views? 

   - (ibaction)segmentedcontrolvaluechanged:(id)sender {      uisegmentedcontrol* segmentedcontrol = sender;      if(lastselectedviewindex != [segmentedcontrol selectedsegmentindex]) {          catransition *transition = [catransition animation];         transition.duration = 0.4;         transition.timingfunction = [camediatimingfunction functionwithname:kcamediatimingfunctioneaseineaseout];         transition.type = kcatransitionmovein;          if(lastselectedviewindex < [segmentedcontrol selectedsegmentindex])             transition.subtype = kcatransitionfromleft;         else             transition.subtype = kcatransitionfromright;          transition.removedoncompletion = yes; // force removal of animation when completed.         {             switch ([segmentedcontrol selectedsegmentindex]) {                  case 0:                      [self.usagescenarioview sethidden:no];                     [self.logincredentialsview sethidden:yes];                     [self.whatitcoversview sethidden:yes];                      [self.pagecontrol setcurrentpage:0];                     break;                  case 1:                     [self.usagescenarioview sethidden:yes];                     [self.logincredentialsview sethidden:no];                     [self.whatitcoversview sethidden:yes];                      [self.pagecontrol setcurrentpage:1];                     break;                  case 2:                     [self.usagescenarioview sethidden:yes];                     [self.logincredentialsview sethidden:yes];                     [self.whatitcoversview sethidden:no];                      [self.pagecontrol setcurrentpage:2];                      break;              }         }          lastselectedviewindex = [segmentedcontrol selectedsegmentindex];         [self.view.layer addanimation:transition forkey:nil];      } }

say 3 views named view1, view2, view3. if want remove view1 , show view2 or view3, existing code, change 

[self.view.layer addanimation:transition forkey:nil];

into

[view1.layer addanimation:transition forkey:nil];

that animate view1 not whole view. can try,

[view2.layer addanimation:transition forkey:nil]; [view3.layer addanimation:transition forkey:nil];

more precisely, like

 transition.removedoncompletion = yes; // force removal of animation when completed.     {         switch ([segmentedcontrol selectedsegmentindex]) {              case 0:                  [self.usagescenarioview sethidden:no];                 [self.logincredentialsview sethidden:yes];                 [self.whatitcoversview sethidden:yes];                  [self.pagecontrol setcurrentpage:0];                  [self.usagescenarioview.layer addanimation:transition forkey:nil];                 break;              case 1:                 [self.usagescenarioview sethidden:yes];                 [self.logincredentialsview sethidden:no];                 [self.whatitcoversview sethidden:yes];                  [self.pagecontrol setcurrentpage:1];                  [self.logincredentialsview.layer addanimation:transition forkey:nil];                 break;              case 2:                 [self.usagescenarioview sethidden:yes];                 [self.logincredentialsview sethidden:yes];                 [self.whatitcoversview sethidden:no];                  [self.pagecontrol setcurrentpage:2];                  [self.whatitcoversview.layer addanimation:transition forkey:nil];                 break;          }     }      lastselectedviewindex = [segmentedcontrol selectedsegmentindex];   }

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