ABAddressBookRef addressBook = ABAddressBookCreate();
CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeople(addressBook);
CFIndex nPeople = ABAddressBookGetPersonCount(addressBook);
NSMutableArray *tempPeoples=[[NSMutableArray alloc]init];
for(int i=0;i<nPeople;i++){
ABRecordRef i1=CFArrayGetValueAtIndex(allPeople, i);
[tempPeoples addObject:i1];
// [peoples addObject:i1];
}// end of the for loop
peoples=[tempPeoples copy];
Este código da excepción b/c Quiero convertir NSMutableArray a NSArray favor ayudaCómo convertir NSArray a NSMutableArray
respondida aquí http://stackoverflow.com/questions/3222122/converting-nsarray-to-nsmutablearray – Mantar