iphone - how to access parents of view controller and properly dismiss self and self.parent? -

in myviewcontroller, ask user select person address book: (on button click)

peoplepicker = [[abpeoplepickernavigationcontroller alloc] init]; peoplepicker.peoplepickerdelegate = self; [self presentviewcontroller:peoplepicker animated:yes completion:null]; 

if user selects person more 1 phone number, present new uitableviewcontroller allows user select 1 of phone numbers:

- (bool)peoplepickernavigationcontroller:(abpeoplepickernavigationcontroller *)peoplepicker shouldcontinueafterselectingperson:(abrecordref)person {     // ...     next = [[choosepersonphoneviewcontroller alloc] initwithstyle:uitableviewstylegrouped personphoneinfoarray:personphoneinfos];     [peoplepicker pushviewcontroller:next animated:yes];     // ... } 

when user selects phone number, bring phone number original viewcontroller , close both abpeoplepickernavigationcontroller , choosepersonphoneviewcontroller.

two questions:

• how close both view controllers within choosepersonphoneviewcontroller?
• how access myviewcontroller within choosepersonphoneviewcontroller?

my guess that:

abpeoplepickernavigationcontroller *peoplepicker = (abpeoplepickernavigationcontroller *)self.navigationcontroller; myviewcontroller *nsvc = (myviewcontroller *)peoplepicker.presentingviewcontroller; 

i have tried many combinations using parentviewcontroller , presentingviewcontroller , popviewcontroller / dismissviewcontroller, can't figure out - keep getting exceptions show lack of understanding of view controller hierarchy. appreciate pointers or @ least rtfm links.

once have second question answered, first question becomes easy. in choosepersonphoneviewcontroller, have property of same class myviewcontroller named parent, , when allocate choosepersonphoneviewcontroller myviewcontroller, set self, set delegate self. once parent set, can call methods in parent child object.