Validating phone number in uitextfield

Question

I am using the following code to display phone number in text field in the following format

and the format is 123-456-7890

and the code is working fine

and the code is as follows

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {


NSCharacterSet *numSet = [NSCharacterSet characterSetWithCharactersInString:@"0123456789-"];
NSString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];
int charCount = [newString length]; 

if ([string isEqualToString:@""]) 
{
    return YES;
} 

if ([newString rangeOfCharacterFromSet:[numSet invertedSet]].location != NSNotFound|| [string rangeOfString:@"-"].location != NSNotFound|| charCount > 12) {
    return NO;
}

if (charCount == 3 || charCount == 7) {
    newString = [newString stringByAppendingString:@"-"];
}

amountField.text = newString;

return NO;


}

I am using the UItextfield delegate method.

But when I am editing the text field up to "-" that mean (if i tried to change the number in text field 123-456-7890 it is not validating that mean 123-456 if i again enter the remaining number from here it is displaying as 123-4567890

can any one please help me how to validate this thing enter image description here

Do you not care about international phone numbers for this field? They can be more than 12 characters long. — chown, Sep 09 '11 at 05:25

score 1 · Accepted Answer · answered Sep 09 '11 at 07:04

1

You have a good tutorial about validating both US and international phone numbers

http://blog.stevenlevithan.com/archives/validate-phone-number

answered Sep 09 '11 at 07:04

balexandre

73,608
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score 0 · Answer 2 · answered Sep 07 '12 at 11:41

this code use easy to check 111-111-1111 format phone numbers

 NSString *phoneRegEx = @"[0-9]{3}+-[0-9]{3}+-[0-9]{4}";
            NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", phoneRegEx];
            if([phoneTest evaluateWithObject:phone]!=YES){

           //your code
            }
            else
            {
            //your code

            }

score 0 · Answer 3 · answered Feb 10 '14 at 10:41

Have a look at this code this might help u a bit

txtlpmobile.text is the string(Mobile no ur gonna enter)

 int length = [self getLength:txtLpMobile.text];
            if(length == 10) {
                if(range.length == 0)
                    return NO;
            }
            if(length == 3){
                NSString *num = [self formatNumber:txtLpMobile.text];
                txtLpMobile.text = [NSString stringWithFormat:@"(%@) ",num];

                if(range.length > 0) {
                    txtLpMobile.text = [NSString stringWithFormat:@"%@",[num substringToIndex:3]];

                }
            } else if(length == 6) {
                NSString *num = [self formatNumber:txtLpMobile.text];
                txtLpMobile.text = [NSString stringWithFormat:@"(%@) %@-",[num  substringToIndex:3],[num substringFromIndex:3]];
                if(range.length > 0) {
                    txtLpMobile.text = [NSString stringWithFormat:@"(%@) %@",[num substringToIndex:3],[num substringFromIndex:3]];
                }
            }

            NSUInteger newLength;
            newLength = [txtLpMobile.text length] + [string length] - range.length;
            NSCharacterSet *cs = [[NSCharacterSet characterSetWithCharactersInString:NUMBERS_ONLY] invertedSet];
            NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];
            return (([string isEqualToString:filtered])&&(newLength <= CHARACTER_LIMIT));

for formatting number

-(NSString*)formatNumber:(NSString*)mobileNumber
{
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"(" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@")" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@" " withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"-" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"+" withString:@""];

    int length = [mobileNumber length];
    if(length > 10)
    {
        mobileNumber = [mobileNumber substringFromIndex: length-10];
    }
    return mobileNumber;
}

for getting length

-(int)getLength:(NSString*)mobileNumber
{
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"(" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@")" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@" " withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"-" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"+" withString:@""];

    int length = [mobileNumber length];

    return length;
}

score 0 · Answer 4 · answered Sep 09 '11 at 06:10

This is how I have done it before in the past. This is in no way efficient, but gets the job done, and is for U.S. numbers only.

- (NSString *) getLongPhoneNumber
{   
    NSString *storedNumber = @"15125551212"
    /* ^^ some incoming phone number */

    if(storedNumber == nil){
        storedNumber = @"5125551212";
    }

    //NSLocale *locale = [NSLocale currentLocale];
    //NSString *localeString = [locale localeIdentifier];

    NSString *tempStr = nil;
    NSRange range;
    range.length = 3;
    range.location = 3;
    NSString *areaCode = [storedNumber substringToIndex:3];
    NSString *phone1   = [storedNumber substringWithRange:range];
    NSString *phone2   = [storedNumber substringFromIndex:6];

    tempStr = [NSString stringWithFormat:@"1 (%@) %@-%@", areaCode, phone1, phone2];
    return tempStr;
}

Validating phone number in uitextfield

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