未收到「 - 」「。」 「」同時從ABPerson的電話簿拿起聯繫人

Question

我想用「 - 」「」「來代替號碼。」同時從電話簿中獲取聯繫人，這裏是我的代碼。
我的主要動機是從數字中提取國家代碼if + is present。
如果還有其他方式可以訪問國家代碼，請給我建議。

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController              *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier; 
    { 
     if (property == kABPersonPhoneProperty) { 
      ABMultiValueRef multiPhones = ABRecordCopyValue(person, kABPersonPhoneProperty); 
    for(CFIndex i = 0; i < ABMultiValueGetCount(multiPhones); i++) { 
     if(identifier == ABMultiValueGetIdentifierAtIndex (multiPhones, i)) { 
      CFStringRef phoneNumberRef = ABMultiValueCopyValueAtIndex(multiPhones, i); 
      CFRelease(multiPhones); 
      NSString *phoneNumber = (__bridge NSString *) phoneNumberRef; 
      CFRelease(phoneNumberRef); 
      if ([phoneNumber rangeOfString:@"+"].location == NSNotFound) { 
       phoneNumber = [phoneNumber stringByReplacingOccurrencesOfString:@"(" withString:@""]; 
       phoneNumber = [phoneNumber stringByReplacingOccurrencesOfString:@")" withString:@""]; 
       phoneNumber = [phoneNumber stringByReplacingOccurrencesOfString:@" " withString:@""]; 
       phoneNumber = [phoneNumber stringByReplacingOccurrencesOfString:@"-" withString:@""]; 
       phoneNumber = [phoneNumber stringByReplacingOccurrencesOfString:@"." withString:@""]; 

       self.lblMobileNumber.text = [NSString stringWithFormat:@"%@", phoneNumber]; 
      } else { 
       NSArray *PhoneNumberComponents = [phoneNumber componentsSeparatedByString:@" "]; 
       NSString * strCountryCode = PhoneNumberComponents[0] ; 
       [self.btnCountryCode setTitle:strCountryCode forState:UIControlStateNormal]; 

       phoneNumber= [phoneNumber stringByReplacingOccurrencesOfString:PhoneNumberComponents[0] withString:@""]; 
       NSLog(@"countryCodeSepratedStr%@",phoneNumber); 
       phoneNumber = [phoneNumber stringByReplacingOccurrencesOfString:@"(" withString:@""]; 
       phoneNumber = [phoneNumber stringByReplacingOccurrencesOfString:@")" withString:@""]; 
       phoneNumber = [phoneNumber stringByReplacingOccurrencesOfString:@" " withString:@""]; 
       phoneNumber = [phoneNumber stringByReplacingOccurrencesOfString:@"-" withString:@""]; 
       phoneNumber = [phoneNumber stringByReplacingOccurrencesOfString:@"." withString:@""]; 
       self.lblMobileNumber.text = [NSString stringWithFormat:@"%@", phoneNumber]; 

      } 

     } 
    } 
    } 
    return NO; 
} 

Answer 1

我不會傾向於做任何的那個字符串操作的東西，而只是使用正則表達式來尋找+隨後數字符串的開始，使用捕獲括號搶只是國家代碼：

NSError *error; 
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"^\\s*\\+\\s*(\\d+)[^\\d]*(.*)$" options:0 error:&error]; 

NSTextCheckingResult *result = [regex firstMatchInString:phoneNumber options:0 range:NSMakeRange(0, [phoneNumber length])]; 
if (result) { 
    NSString *countryCode = [phoneNumber substringWithRange:[result rangeAtIndex:1]]; 
    NSString *phoneNumberWithoutCountryCode = [phoneNumber substringWithRange:[result rangeAtIndex:2]]; 
} else { 
    // no country code found 
}