我通過使用下面的代碼解決了上述問題。希望它有助於某人。
-(void)newContactsAndContactsToUpdate
{
NSMutableArray *newContact = [[NSMutableArray alloc]init];
NSMutableArray *newContactRecIds = [[NSMutableArray alloc]init];
NSMutableArray *updateContactRecIds = [[NSMutableArray alloc]init];
NSMutableArray *updateContactRecIds = [[NSMutableArray alloc]init];
//dataArray contains all the contacts(converted into Vcard strings) in the phonebook
//recordIDArray contains the all recordids in the phonebook
//dbArraywithRID contains the recordids stored in database.
//dbArraywithVcard contains contacts(converted into Vcard strings)stored in database
for(int i=0;i< dataArray.count;i++)
{
BOOL found = NO;
int phoneBookRecId=[[recordIDArray objectAtIndex:i] intValue];
NSString * currentPhVc=[dataArray objectAtIndex:i];
for(int j=0;j< dbArraywithRID.count;j++)
{
int dbRecId=[[dbArraywithRID objectAtIndex:j] intValue];
if(dbRecId == phoneBookRecId)
{
found =YES;
NSString * currentDBVc=[dbArraywithVcard objectAtIndex:j];
if(![currentDBVc isEqualToString:currentPhVc])
{
NSLog(@" db rec =%@ - %@ ",currentDBVc,currentPhVc);
[updateContactRecIds addObject:[NSNumber numberWithInt:phoneBookRecId]];
[newContact addObject:currentPhVc];
[newContactRecIds addObject:[NSNumber numberWithInt:phoneBookRecId]];
}
break;
}
}
if(!found)
{
[newContact addObject:currentPhVc];
[newContactRecIds addObject:[NSNumber numberWithInt:phoneBookRecId]];
}
}
if(newContact!=nil && [newContact count] > 0)
{
//newContact array contains all the contacts(vcard strings) that are new
}
if(updateContactRecIds!=nil && [updateContactRecIds count] > 0)
{
updateContactRecIds contains all the recordids which need to be updated
}
}