display iPhone contacts using system framework in ios - objective-c

Question

In my app if I tap one button I need to display all the phone contacts like whatsapp... How to acheive this with AddressBook framework? Or can we use any other frameworks to display all the device contacts...

Answer 1

We can fetch the contact using the contact framework: following the step->
Add the contact.framework and contactUI.framework in your app bundle.
Add the two file in your .h file:
#import Contacts/Contacts.h
#import ContactsUI/ContactsUI.h
Add the flowing code
-(void)loadContactList
{
#try {
CNAuthorizationStatus status = [CNContactStore authorizationStatusForEntityType:CNEntityTypeContacts];
if( status == CNAuthorizationStatusDenied || status == CNAuthorizationStatusRestricted)
{
NSLog(#"access denied");
}
else
{
//Create repository objects contacts
CNContactStore *contactStore = [[CNContactStore alloc] init];
//Select the contact you want to import the key attribute ( https://developer.apple.com/library/watchos/documentation/Contacts/Reference/CNContact_Class/index.html#//apple_ref/doc/constant_group/Metadata_Keys )
NSArray *keys = [[NSArray alloc]initWithObjects:CNContactIdentifierKey, CNContactEmailAddressesKey, CNContactBirthdayKey, CNContactImageDataKey, CNContactPhoneNumbersKey,CNContactViewController.descriptorForRequiredKeys,nil];
// Create a request object
CNContactFetchRequest *request = [[CNContactFetchRequest alloc] initWithKeysToFetch:keys];
request.predicate = nil;
[contactStore enumerateContactsWithFetchRequest:request
error:nil
usingBlock:^(CNContact* __nonnull contact, BOOL* __nonnull stop)
{
// Contact one each function block is executed whenever you get
NSString *phoneNumber = #"";
if( contact.phoneNumbers)
phoneNumber = [[[contact.phoneNumbers firstObject] value] stringValue];
NSLog(#"phoneNumber = %#", phoneNumber);
NSLog(#"givenName = %#", contact.givenName);
NSLog(#"familyName = %#", contact.familyName);
NSLog(#"email = %#", contact.emailAddresses);
[contactList addObject:contact];
}];
}
} #catch (NSException *exception) {
NSLog(#"Exception:%#",exception.reason);
}
}
Call this method in view did load or view did appear.