获得通讯录的访问权

ABAddressBookRef abRef = ABAddressBookCreateWithOptions(NULL, NULL);
            if (ABAddressBookGetAuthorizationStatus() ==  kABAuthorizationStatusNotDetermined) {
                ABAddressBookRequestAccessWithCompletion(abRef, ^(bool granted, CFErrorRef error) {
                    if (granted) {
                        ContactListViewController *contactListViewController = [[ContactListViewController alloc]init];
                        [self.navigationController pushViewController:contactListViewController animated:YES];
                    }
                });
            }else if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusAuthorized){
                ContactListViewController *contactListViewController = [[ContactListViewController alloc]init];
                [self.navigationController pushViewController:contactListViewController animated:YES];
            }else{
                UIAlertController * tipAert = [UIAlertController alertControllerWithTitle:@"提示" message:@"请先允许访问通讯录" preferredStyle:(UIAlertControllerStyleAlert)];
                UIAlertAction *v1 = [UIAlertAction actionWithTitle:@"取消" style:(UIAlertActionStyleDefault) handler:^(UIAlertAction * _Nonnull action) {
                }];
                [tipAert addAction:v1];
                UIAlertAction *v2 = [UIAlertAction actionWithTitle:@"前往" style:(UIAlertActionStyleDefault) handler:^(UIAlertAction * _Nonnull action) {
                    [[UIApplication sharedApplication]openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
                }];
                
                [tipAert addAction:v2];
                [self presentViewController:tipAert animated:YES completion:nil];
            }
            if (abRef) {
                CFRelease(abRef);
            }