CNContact框架工作无法获取所有联系人(iCloud,Gmail)

Question

选择设置>联系人>默认帐户作为iCloud并保存新联系人.然后将默认帐户更改为gmail.CNContactStore未获取新保存的联系人.

 CNContactStore *store = [[CNContactStore alloc] init];
[store requestAccessForEntityType:CNEntityTypeContacts completionHandler:^(BOOL granted, NSError * _Nullable error) {
    if (granted == YES)
    {
        NSArray *keys = @[CNContactFamilyNameKey, CNContactGivenNameKey, CNContactPhoneNumbersKey, CNContactImageDataKey,CNContactEmailAddressesKey];
        NSArray * contactContainerArray =  [store containersMatchingPredicate:nil error:nil];
        for(CNContainer * container in contactContainerArray) {
            NSPredicate *predicate = [CNContact predicateForContactsInContainerWithIdentifier:container.identifier];
            NSError *error;
            NSArray *cnContacts = [store unifiedContactsMatchingPredicate:predicate keysToFetch:keys error:&error];
}

Answer 1

如果您只是希望获取所有统一联系人（代表同一个人的不同帐户中的联系人可能会自动链接在一起。链接的联系人在 macOS 和 iOS 应用程序中显示为统一联系人），最好的解决方案是以下一种

 -(void)fetchContacts
  {
      CNContactStore *store = [[CNContactStore alloc] init];    
      [store requestAccessForEntityType:CNEntityTypeContacts completionHandler:^(BOOL granted, NSError * _Nullable error) {
      if (granted == YES)
      {
        //keys with fetching properties
        NSArray *keys = @[CNContactFamilyNameKey, CNContactGivenNameKey, CNContactPhoneNumbersKey, CNContactImageDataKey,CNContactEmailAddressesKey];
        NSString *containerId = store.defaultContainerIdentifier;
        NSArray * contactContainerArray =  [store containersMatchingPredicate:nil error:nil];
        CNContactFetchRequest * fetchRequest = [[CNContactFetchRequest alloc]initWithKeysToFetch:keys];
        [store enumerateContactsWithFetchRequest:fetchRequest error:nil usingBlock:^(CNContact * _Nonnull contact, BOOL * _Nonnull stop) {

        }];
      }
  }