#import <Contacts/Contacts.h>
CNContactStore *contactStore = [CNContactStore new];
NSArray *keys = @[];
// 获取通讯录中所有的联系人
CNContactFetchRequest *request = [[CNContactFetchRequest alloc] initWithKeysToFetch:keys];
CNFetchResult<NSEnumerator<CNContact *> *> *result = [contactStore enumeratorForContactFetchRequest:request error:nil];
NSArray *contacts = [result.value allObjects];
